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Publication numberCN1972153 A
Publication typeApplication
Application numberCN 200610137199
Publication date30 May 2007
Filing date6 Sep 2006
Priority date6 Sep 2005
Also published asCA2558849A1, EP1760902A2, EP1760902A3, US7460831, US20060019604
Publication number200610137199.8, CN 1972153 A, CN 1972153A, CN 200610137199, CN-A-1972153, CN1972153 A, CN1972153A, CN200610137199, CN200610137199.8
Inventors亚伯拉罕哈萨希
Applicant德科链路无线有限公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
System and method for excluding narrow band noise from a communication channel
CN 1972153 A
Abstract
A signal filtering system and method that may be used in conjunction with a repeater or an input stage of a base-station. The system may include an analog to digital converter adapted to sample a received signal and to produce a data stream corresponding to the received signal in the time domain, a filtering block having one or more digital filter elements, wherein each of said one or more filter elements is adapted to filter one or more sets of frequency bands associated with one or more communication channel, and a controller adapted to configure said one or more digital filter elements based on parameters stored on a database and/or based on parameters received via a modem.
Claims(35)  translated from Chinese
1.一个信号滤波系统,包括:模数转换器,适于采样接收的信号,并在时域中产生与接收信号对应的数据流;数字信号处理单元,用于执行所述接收信号的频谱分析;滤波子系统,用于基于所述频谱分析的结果来滤波所述数据流,该滤波子系统具有一个或多个数字滤波元件,每个滤波元件适于滤波与一个或多个相应通信信道相关的一个或多个频带集合;以及控制器,用于基于一个或多个所选择的参数来配置所述一个或多个数字滤波元件。 1. A signal filtering system, comprising: analog to digital converter adapted to sample the received signal, and generates a time domain signal corresponding to the received data stream; digital signal processing unit for performing the spectral analysis of the received signal ; filtering subsystem for the spectrum analysis based on a result of the filtering to the data stream, the filtering sub-system having one or more digital filter elements, each filter element adapted to filter one or more respective communication channel correlation one or more set of frequency bands; and a controller, based on the parameters for one or more selected to configure the one or more digital filter elements.
2.根据权利要求1的信号滤波系统,还包括下变频器,用于在所述模数转换器进行采样之前,将所述接收信号下变频到中频。 2. The signal filtering system according to claim 1, further comprising a down-converter, said analog to digital converter for sampling before, the received signal is down-converted to an intermediate frequency.
3.根据权利要求1的信号滤波系统,还包括下变频器,用于在所述模数转换器进行采样之前,将所述接收信号下变频到期望的射频。 3. The signal filtering system according to claim 1, further comprising a down converter for analog to digital converter before the sampling frequency to a desired radio frequency signal to the receiver.
4.根据权利要求1的信号滤波系统,还包括数模转换器,用于将所述滤波块的输出转换为模拟信号。 The signal filtering system according to claim 1, further comprising a digital to analog converter for converting the output of said filtering block into an analog signal.
5.根据权利要求1的信号滤波系统,还包括上变频器,适于将来自所述数模转换器的输出上变频到输出射频滤波器。 5. The signal filtering system according to claim 1, further comprising an upconverter adapted to output radio frequency from the frequency of the filter output of the DAC.
6.根据权利要求1的信号滤波系统,其中一个或多个所述滤波元件包括可编程数字滤波器。 6. The signal filtering system according to claim 1, wherein one or more of said filter element comprises a programmable digital filter.
7.根据权利要求1的信号滤波系统,其中一个或多个所述滤波元件包括时域到频域转换引擎、帧整形单元和频域到时域转换引擎。 7. The signal filtering system according to claim 1, wherein one or more of said filter element comprises a time domain to frequency domain conversion engine, a frame shaping unit and frequency domain to time domain conversion engine.
8.根据权利要求7的信号滤波系统,其中所述频域转换引擎是快速傅里叶变换引擎。 8. The signal filtering system according to claim 7, wherein the frequency domain conversion engine is a fast Fourier transform engine.
9.根据权利要求7的信号滤波系统,其中所述频域到时域转换引擎是逆快速傅里叶变换引擎。 9. The signal filtering system according to claim 7, wherein the frequency domain to time domain conversion engine is an inverse fast Fourier transform engine.
10.根据权利要求1的信号滤波系统,还包括性能监视单元,用于监视通过所述系统的信号流特性,并向所述控制器指示所述信号流特性,其中所述控制器适于如果所述信号流特性不在预定的范围内,就重新配置所述一个或多个滤波元件。 10. The signal filtering system according to claim 1, further comprising a performance monitoring unit for monitoring signal flow characteristics through the system, to said controller indicative of the flow characteristic signal, wherein the controller is adapted if the signal flow characteristics are not within the predetermined range, reconfiguring the one or more filtering elements.
11.根据权利要求10的信号滤波系统,其中所述监视的信号流特性包括从由信号增益、信号延迟和信号相移构成的组中选择的至少一个参数。 11. The signal filtering system according to claim 10, wherein the signal flow characteristic comprises monitoring at least one parameter selected from the group consisting signal gain, signal delay and signal the group consisting of phase shift.
12.根据权利要求10的信号滤波系统,其中所述控制器能够通过所述调制解调器向远程位置发送所述信号流特性。 12. The signal filtering system according to claim 10, wherein said controller is capable of transmitting the signal flow characteristics to a remote location via said modem.
13.根据权利要求1的信号滤波系统,包括增益控制单元,适于如果所述信号流特性不在预定的范围内,就远程地重新配置所述一个或多个滤波元件。 13. The signal filtering system 1, including gain control means is adapted to, if the signal flow characteristics are not within the predetermined range, it is remotely reconfiguring the one or more filtering elements claim.
14.根据权利要求10的信号滤波系统,其中所述控制器适于如果所述信号流特性不在预定的范围内,就自动重新配置所述一个或多个滤波元件。 14. The signal filtering system according to claim 10, wherein said controller is adapted to, if the signal flow characteristics are not within the predetermined range, automatically reconfiguring the one or more filtering elements.
15.根据权利要求10的信号滤波系统,其中所述控制器适于执行自动增益控制。 15. The signal filtering system according to claim 10, wherein the controller is adapted to perform automatic gain control.
16.根据权利要求10的信号滤波系统,其中所述控制器适于自动执行增益平衡。 16. The signal filtering system according to claim 10, wherein said controller is adapted to automatically perform gain balance.
17.根据权利要求10的信号滤波系统,其中所述控制器适于执行振荡保护。 17. The signal filtering system according to claim 10, wherein said controller is adapted to perform oscillation protection.
18.根据权利要求10的信号滤波系统,其中所述控制器适于分析业务负载。 18. The signal filtering system according to claim 10, wherein said controller is adapted to analyze the traffic load.
19.根据权利要求1的信号滤波系统,其中一个或多个所述滤波元件被配置为用于通过一个或多个选择的频带。 19. The signal filtering system according to claim 1, wherein one or more of said filter element is configured for one or more selected frequency bands.
20.根据权利要求1的信号滤波系统,其中一个或多个所述滤波元件被配置为用于阻塞一个或多个选择的频带。 20. The signal filtering system according to claim 1, wherein one or more of said filter element is configured to block one or more selected frequency bands.
21.根据权利要求1的信号滤波系统,其中一个或多个所述滤波元件被配置为用于在干扰信号的一个或多个选择频带上或其周围进行陷波。 21. The signal filtering system according to claim 1, wherein one or more of said filter element is configured for interfering signals on a frequency band or around or more selected notch.
22.一种信号滤波的方法,包括:采样接收的信号,并在时域产生与接收信号相对应的数据流;根据与一个或多个相应通信信道相关的一个或多个频带集合来滤波所述流;以及基于一个或多个所选择的参数来配置所述一个或多个通信信道。 22. A method for filtering a signal, comprising: sampling the received signal, and generates a time domain signal corresponding to the received data stream; in accordance with one or more respective communication channels associated with one or more frequency bands of the set of filter said stream; and based on one or more selected parameters to configure the one or more communication channels.
23.根据权利要求30的方法,还包括在所述模数转换器进行采样之前,将所述接收信号下变频到中频。 23. The method of claim 30, further comprising, prior to the ADC sampling, the received signal is down-converted to an intermediate frequency.
24.根据权利要求30的方法,还包括将所述滤波块的输出转换为模拟信号。 24. The method of claim 30, further comprising converting the output of said filtering block into an analog signal.
25.根据权利要求32的方法,还包括将所述数模转换器的输出上变频到输出射频滤波器。 25. The method of claim 32, further comprising a radio frequency to the output frequency of the filter output of the DAC.
26.根据权利要求30的方法,其中滤波包括:将来自时域的所述数据流转换到频域;整形所述数据流的帧;以及将所述数据流从频域转换回时域。 26. The method according to claim 30, wherein the filtering comprises: the data stream from the time domain into the frequency domain; frame shaping said data stream; and converting the data stream back into the time domain from the frequency domain.
27.根据权利要求30的方法,还包括:监视信号流特性;向所述控制器指示该信号流特性;如果该信号流特性不在预定的范围内,就重新配置所述一个或多个滤波元件。 27. The method of claim 30, further comprising: a monitoring signal flow characteristics; to the controller indicating the signal flow characteristics; if the signal is within a predetermined range of flow characteristics is not, then reconfiguring the one or more filtering elements .
28.根据权利要求35的方法,其中监视信号流特性包括:获得信号;延迟该信号;以及移位该信号的相位。 28. The method according to claim 35, wherein the monitoring signal flow characteristics comprising: obtaining a signal; delay of the signal; and a phase shift of the signal.
29.根据权利要求35的方法,其中监视包括通过所述调制解调器向远程位置发送所述信号流特性。 29. The method according to claim 35, wherein the monitoring comprises transmitting the signal flow characteristics to a remote location via said modem.
30.根据权利要求22的方法,还包括执行自动增益设置。 30. The method of claim 22, further comprising performing automatic gain setting.
31.根据权利要求22的方法,还包括执行自动增益平衡。 31. The method of claim 22, further comprising performing automatic gain balancing.
32.根据权利要求22的方法,还包括执行振荡控制。 32. The method of claim 22, further comprising performing an oscillation control.
33.根据权利要求22的方法,还包括自动分析业务负载。 33. The method of claim 22, further comprising automatically analyzing the traffic load.
34.一种蜂窝通信系统的基站,所述基站包括:模数转换器,适于采样接收的信号,并在时域产生与接收信号相对应的数据流;数字信号处理单元,用于执行所述接收信号的频谱分析;滤波子系统,用于滤波所述数据流,该滤波子系统具有一个或多个数字滤波元件,每个滤波元件适于滤波与一个或多个相应通信信道相关的一个或多个频带集合;以及控制器,用于基于一个或多个所选择的参数来配置所述一个或多个数字滤波元件。 34. A base station in a cellular communication system, said base station comprising: analog to digital converter adapted to sample the received signal, and generates a time domain signal corresponding to the received data stream; digital signal processing unit for performing the spectrum analysis of said received signals; filtering subsystem for filtering the data stream, the filtering sub-system having one or more digital filter elements, each filter element is adapted to filter and one or more respective communication channels associated with a or more set of frequency bands; and a controller, based on the parameters for one or more selected to configure the one or more digital filter elements.
35.一种用于蜂窝通信系统的中继器,所述中继器包括:模数转换器,适于采样接收的信号,并在时域产生与接收信号相对应的数据流;数字信号处理单元,用于执行所述接收信号的频谱分析;滤波子系统,用于滤波所述数据流,该滤波子系统具有一个或多个数字滤波元件,每个滤波元件适于滤波与一个或多个相应通信信道相关的一个或多个频带集合;控制器,用于基于一个或多个所选择的参数来配置所述一个或多个数字滤波元件。 Digital signal processing; ADC, adapted to sample the received signal, and in the time domain to produce the received signal corresponding to the data stream: 35. A repeater for a cellular communication system, said repeater comprising means for performing spectral analysis of the received signal; filtering subsystem for filtering the data stream, the filtering sub-system having one or more digital filter elements, each filter element adapted to filter one or more respective communication channels associated with one or more set of frequency bands; a controller, based on the parameters for one or more selected to configure the one or more digital filter elements.
Description  translated from Chinese
排除通信信道的窄带噪声的系统和方法 System and method for narrowband noise exclude communication channels

技术领域 FIELD

本发明通常涉及通信领域。 The present invention relates generally to the field of communications. 更具体而言,本发明涉及一个或多个通信信道的数字滤波。 More specifically, the present invention relates to digital filtering of one or more communication channels.

背景技术 BACKGROUND

干扰信号可能引起信噪比(“SNR”)和比特能量噪声比(“Eb/No”)或比特能量干扰比(“Eb/I”)或载波干扰比(“C/I”)的降低,这些干扰信号通常在通信信道中随沿传输介质(例如,同轴电缆、无屏蔽导体、波导、室外乃至光纤或基于光纤的RF)传输的期望的接收信号出现在接收机输入端。 May cause interference signal to noise ratio ("SNR") and bit energy to noise ratio ("Eb / No") or the bit energy-to-interference ratio ("Eb / I") or carrier to interference ratio ("C / I") is reduced, These interfering signals are typically transmitted along a communication channel with the media (e.g., coaxial cable, unshielded conductors, waveguides, optical fibers or even outdoor fiber-based RF) receive a desired transmitted signal appears at the receiver input. 这些降低和干扰可能出现在通信技术中,包括例如分别根据3G CDMA 2000和UMTS标准操作的CDMA、EVDO和WCDMA,以及TDMA和GSM。 These lower and interference may occur in communications, including, for example, respectively, based on 3G CDMA 2000 and UMTS standard operating CDMA, EVDO and WCDMA, as well as TDMA and GSM. 信号质量衰减和它引起的Eb/I降低可能限制在传输介质上的带宽。 Signal quality and its attenuation caused by Eb / I decrease may limit bandwidth over a transmission medium. 来自在通信信道频率范围内信号之外的干扰也可能降低信道的Eb/I,并减少信道可能传送的数据量和/或可能使通信信道的接收机阻塞或饱和。 Interference from outside the frequency range of the communication channel signal may also reduce the channel Eb / I, and to reduce the amount of data channel may be transmitted and / or may make the communication channel receiver blocked or saturated. 在某些情况下,它可能引起全部频率信道的丢失。 In some cases, it may cause the loss of all the frequency channels. 此外,在某些情况下,例如,由于干扰信号引起的Eb/I降低可能使通信(业务或控制)信道不能工作,甚至会降低基站的容量。 In addition, in some cases, e.g., due to interference caused by signals Eb / I may reduce the communication (traffic or control) channel is not working, and even reduce the capacity of the base station.

为了改善在长距离传输的信号的Eb/I,并相应地增加传输距离和/或数据速率,可以沿传输路径每隔一段距离来设置信号中继器。 In order to improve the long-distance transmission of signals Eb / I, and a corresponding increase in transmission distance and / or data rate, signal repeaters may be set at some distance along the transmission path. 中继器是众所周知的设备,它可以被应用于光学、微波和射频(RF)通信系统。 Repeaters are well-known devices, it can be applied to an optical, microwave and radio frequency (RF) communication system. 中继器已经被用作蜂窝传输系统的一部分,用于扩展在蜂窝基站和蜂窝手机之间的覆盖范围。 Repeaters have been used as part of a cellular transmission system, for extending between the cellular base stations and cellular phone coverage.

然而,在频谱频率范围(“工作频带”)(例如、800MHz、900MHz、PCS、公共安全、或任何其它的网络工作频带)内的一个或多个频率上使用用于一个或多个信道的宽带中继器(例如,工作频率的通带范围)可能产生对网络的噪声干扰。 However, in the frequency range of the spectrum ("operating band") (e.g., 800MHz, 900MHz, PCS, public safety, or any other network operating band) on one or more frequencies in use for one or more channels of wideband repeater (e.g., the operating frequency of the pass band) may have on the network noise. 而且,在中继器的附近、以及在要中继的一个通信信道的频率范围内存在的干扰信号,也可以被中继器中继和放大,从而实际上降低要中继的通信信道的Eb/I。 Further, in the vicinity of the repeater, and the frequency range to be relayed in one communication channel exists in the interference signal to be amplified and relayed by the repeater, thereby effectively reducing the communication channel to be relayed the Eb / I. 干扰信号可能进一步引入对基站接收机的干扰,这种干扰可以引起例如CDMA小区收缩,或者会降低基站容量。 Interference signals may further introduce interference to the base station receiver, such interference can cause cell shrinkage such as CDMA, or reduces the capacity of the base station. 现在参考图1A,图1A示出了举例说明第一蜂窝运营商的频带或信道(例如每个频带125MHz)的频谱图,该频带或信道可用于CDMA信道的“工作频带”的频率范围。 Referring now to Figure 1A, Figure 1A illustrates a first cellular operator illustrating a band or a channel (e.g., each band 125MHz) of the frequency spectrum, the frequency band or channel can be used for CDMA channel "operating band" frequency range. 如图1A中所示,在第一蜂窝运营商的第二通信信道的频率范围内,由某些外部信号源引入了例如带宽为25KHz的窄带干扰信号。 As shown in FIG. 1A, in the frequency range of the first cellular operator of the second communication channel, by some external source such as the introduction of a narrowband interference signal bandwidth of 25KHz. 该干扰信号会降低一个或多个通信信道的Eb/I,而且常规的中继器的使用会增强干扰信号,并降低它所干扰的通信信道的Eb/I。 The interfering signal will reduce one or more communication channels of Eb / I, and the use of a conventional repeater will increase the interference signal, and it reduces the interference of the communication channel Eb / I. 中继器作为蜂窝网络系统的一部分,通常安装在远离基站覆盖范围的地理位置。 Repeater as part of a cellular network system, usually installed in a location far from the base station coverage. 干扰可能出现在中继器接收机视距的附近,或者在基站接收机视距的附近,并且会产生从视距到基站接收机的问题。 Interference may occur in the line of sight of the receiver near repeaters, or near line of sight of the base station receiver and the base station will be generated from the receiver to the line of sight issues. 中继器和/或基站一般不能解决这些问题。 Repeater and / or base stations are generally not solve these problems.

图1B显示了举例说明第二蜂窝运营商可能采用的信道频带的频谱图,第二蜂窝运营商可能与图1A的第一蜂窝运营商在相同的地理位置中使用这些信道频带。 Figure 1B shows a second illustrative cellular operators may use the spectrum channel band, a second cellular operator may FIG 1A of the first cellular operator to use these channel band in the same geographic location. 然而,图1B的第二运营商可能使用比图1A中第一运营商所使用的带宽更窄(例如200KHz)的通信信道,并且可以使用具有邻近频带的两个或多个通信信道,以产生需要的业务容量。 However, FIG. 1B, a second operator may use bandwidth than in Fig. 1A of the first carrier uses narrower (e.g., 200KHz) communication channel, and can use two or more communication channels having adjacent frequency bands to produce required traffic capacity. 例如,一个信道可以主要用于业务,其它的信道可以主要用于接入。 For example, a channel may be mainly used for business, the other channels may be primarily used for access. 所有的信道通常需要是可操作的,以便可以充分地进行通信。 All channels will usually need operable to sufficiently communicate. 这种情况可能通常出现在较为宽阔的区域中,例如出现在州之间、国家之间,或者在靠近诸如湖泊和海洋等水流的区域中。 This may generally occur in relatively wide area, such as occurs between states, between countries, or in close proximity to water, such as lakes and seas area. 由于水是RF波的良好导体,因此在水源附近设置的基站可能从远处基站乃至从远处国家接收到干扰信号。 Since water is a good conductor of RF wave, and therefore may be received from a distance and even from a distance, a base station in country water provided near the base station to the interference signal. 因此,如图1A中所示,运营商B的频带,例如,在图1B中的第三信道,可能与运营商A的频带重叠并干扰运营商A的频带,例如图1A中的第二信道。 Thus, as shown, the operator of the frequency band B in FIG. 1A, for example, in FIG. 1B third channel, and the frequency band may overlap and interfere with Carrier A Carrier A band, e.g., in Figure 1A of the second channel . 此外或或者另一种情况下,如图1B中所示,运营商A的频带,例如在图1A中的第四信道,可以与运营商B的频带重叠并干扰运营商B的频带,例如图1B中的第六信道。 Additionally or alternatively under another case, as shown, the frequency band of the operator A, for example, in FIG. 1A fourth channel in Fig. 1B, the frequency band can be overlapped with the operator B, and operator B's interference band, e.g., FIG. 1B in the sixth channel.

不使用中继器的另一个示例性情况是室外环境的情况。 Without repeaters another exemplary case is the case of the outdoor environment. 在室外环境中,工作的基站接收机中可能存在例如诸如电视台或其它蜂窝运营商的干扰信号的干扰。 In an outdoor environment, there may be interference, such as for example television or other cellular operators interference signal in the base station receiver to work. 这些干扰可能影响基站,例如引起小区收缩和/或降低基站容量。 These disturbances may affect the base station, e.g., cause cell shrinkage and / or decrease base station capacity. 当蜂窝基站接收到有例如图1A或图1B中所示的干扰信号的通信信道时,该干扰信号可能对基站接收机产生不利影响。 For example, when the cellular base station receives a communication channel interfering signal shown in FIG. 1A or 1B when to, the jamming signal may adversely affect the base station receiver. 接收机可能不能够从信道中提取数据,或者在某些情况下,接收机可能完全阻塞接收机容量或控制信道。 The receiver may not be able to extract data from the channel, or in some cases, the receiver may be completely blocked the capacity of the receiver or control channel.

干扰信号可能具有固定的性质,具有相对固定的频率和幅度。 The interference signal may have a fixed nature, has a relatively fixed frequency and amplitude. 或者,干扰信号可能是间歇的并具有不稳定的性质。 Alternatively, the nature of the interfering signal may be intermittent and have unstable.

从图1A和图1B中应当清楚地看到,在给定的地理位置中由一个或多个无线服务运营商/提供商使用的通信信道的中心频率和频带大小可能变化相当大,因此,当经过中继器和/或在基站的输入级时,每个信道可能有显著不同的滤波需求。 It should be apparent from FIGS. 1A and 1B, the center frequency and the band sizes in a given location by one or more wireless service operators / providers use the communication channel may vary considerably, and therefore, when repeaters and / or when the input level of the base station, each channel may have a significant different filtering requirements.

发明内容 SUMMARY

提供一种用于进行通信信道的数字滤波的系统和方法,其中包括调整信道中心频率。 Provide a digital filter for performing a communication channel of the system and method, including adjusting the channel center frequency. 该系统和方法使得可以例如,隔离与单独的通信信道和/或通信信道组相关的频率,在一些情况下,能够提取或排除与窄带噪声相关的频率,或来自通信信道的干扰。 The system and method makes it possible, for example, be isolated from a separate communication channel and / or communication channel group associated with the frequency, in some cases, can be extracted or exclude frequencies associated with narrow band noise, or interference from the communication channel. 考虑到噪声的动态性质和通信信道的中心频率会发生偏移的可能性、或通信信道的频带大小或带宽会扩展或收缩的情况下,该系统和方法能够例如调整信道中心频率。 When taking into account the possibility of deviation of the center frequency of the noise and the dynamic nature of communication channels occurs, or the communication channel of a frequency band size or bandwidth expansion or contraction, e.g., the system and method capable of adjusting the channel center frequency.

本发明的一些实施例涉及通过对在基站接收的通信信号进行滤波、和/或通过排除在基站或中继器中的窄带噪声/干扰,对一个或多个通信信道的进行数字滤波以有利于中继器操作。 Some embodiments of the present invention relates to a communication signal received at the base station for filtering, and / or excluded by the base station or repeater narrowband noise / interference, one or more communication channels are digitally filtered in order to facilitate repeater operation.

本发明的一些实施例涉及可以接收特定频率上与特定的通信信道相关的信号的接收机。 Some embodiments of the present invention relates to a receiver can receive on a specific frequency associated with a particular communication channel signal. 模数转换器可以产生与接收信号相关的数字信号,该数字信号可以通过数字滤波器,该数字滤波器用于滤波数字信号并通过位于通信信道的特定频率的频率或其周围的频率分量。 Analog to digital converter may generate a digital signal related to the received signal, the digital signal through a digital filter, the digital filter for filtering the digital signal via a communication channel located in a specific frequency or a frequency around the frequency component. 数模转换器可以产生与滤波的数字信号相关的模拟信号。 DAC can produce a filtered digital signal with an analog signal correlation. 在本发明的一些实施例中,可以将模拟信号通过或者直接或间接地输入到基站接收机中。 In some embodiments of the present invention, may be an analog signal or input directly or indirectly to the base station receiver. 在本发明的其它实施例中,发射机可以向基站、手机或中继器重新发送模拟信号。 In other embodiments of the present invention, the transmitter may transmit the analog signal to the base station, repeater, or phone again.

根据本发明的一些实施例,可以包括第二数字滤波器,该滤波器用于通过与第二通信信道相关的第二频率上或其周围的频率分量。 According to some embodiments of the present invention, may comprise a second digital filter which is used by the frequency component and a second frequency related to a second communication channel or around.

根据本发明的一些实施例,可以包括下变频器,该下变频器用于将接收的信号下变频到中频信号。 According to some embodiments of the present invention, may comprise a down converter, the down converter for down-converting the received signal to the intermediate frequency signal. 或者,该下变频器可以将接收的信号下变频到期望的射频信号。 Alternatively, the radio frequency signal to a desired frequency at the down-converter can receive a signal. 此外或作为替代,可以包括上变频器,它用于将与滤波的数字信号相关的模拟信号上变频到发射频率。 Additionally or alternatively, may include a frequency converter, which is used to frequency conversion to a transmit frequency associated with the filtered digital signal the analog signal.

根据本发明的一些其他实施例,数字滤波器可用于滤除干扰信号。 According to some other embodiments of the present invention, the digital filter can be used to filter out the interference signal. 该数字滤波器可以是陷波滤波器或两个具有部分重叠的通带特性的滤波器的组合。 The digital filter may be a notch filter or a combination of two partially overlapping with passband characteristic of the filter.

根据本发明一些其他的实施例,控制单元可以根据在滤波参数数据库中存储的数字滤波参数和/或系数,来编程第一和/或第二数字滤波器。 According to some other embodiments of the present invention, the control unit can be based on digital filtering parameters stored in the filtering database the parameters and / or coefficients, to program the first and / or second digital filter. 控制器还可以通过调制解调器接收来自远程位置的数字滤波参数和/或系数。 The controller may also receive the digital filter parameters and / or coefficients from a remote location via a modem.

控制单元可以接收来自根据本发明的系统的一个或多个性能监视器的信号,该信号指示性能参数,诸如信号延迟、相移、增益和噪声/干扰的存在。 The control unit may receive from the presence of a signal of a system in accordance with the present invention, one or more performance monitor, a signal indicative of the performance parameters, such as signal delay, phase shift, gain and noise / interference. 响应该性能监视信号,控制器可以调整或改变一个或多个数字滤波器的数字滤波参数和/或系数,以便使系统性能落入工作要求范围。 In response to the performance monitoring signal, the controller may adjust or change the digital filter parameters of one or more digital filters and / or coefficients, so that the system performance requirements fall within the scope of work.

根据本发明的一些其他实施例,在滤波之前或之后,可以以偏移频率Fshift将数字信号与数字正弦信号进行混频。 According to some other embodiments of the present invention, before or after filtering, may be offset frequency Fshift digital signal with a digital sine signal for mixing. 可以响应于性能监视信号或者基于通过调制解调器接收的指令,通过控制器来设置和调整偏移的频率。 In response to performance monitoring based on the received signal, or via a modem command, set by the controller and adjusting the offset frequency.

根据本发明的一些其他实施例,可以向基站接收机的输入提供由数模转换器产生的模拟信号。 According to some other embodiments of the present invention can provide an analog signal generated by a digital to analog converter to the input of the base station receiver.

根据本发明的一些其他实施例,一个或多个滤波元件可以包括时域到频域转换引擎、帧整形单元和频域到时域转换引擎。 According to some other embodiments of the present invention, one or more filtering elements may comprise a time domain to frequency domain conversion engine, a frame shaping unit and frequency domain to time domain conversion engine. 该频域转换引擎和操作该引擎的方法可以提供监视通信信道业务的能力,并可以具备检测干扰特性的能力。 The frequency-domain transformation engine and operate the engine method can provide a communication channel to monitor the ability of the business, and may have the ability to detect interference characteristics. 关于现有干扰及其特性的数据可以向客户提供例如判定通信信道是否可受到干扰损害的工具。 Data on existing interference and its characteristics may provide tools such as determining whether a communication channel may be disturbed damage to customers.

附图说明 Brief Description

在说明书的总结部分中特别指出并清楚地声明了本发明的主题。 Particularly pointed out in the concluding portion of the specification and a clear statement of the subject of the present invention. 但是,在借助附图阅读时,参考下文详细的叙述可以最佳地理解关于本发明的组织和操作方法,以及本发明的目的、特征和优点,其中:图1A是示出四个通信信道的相应四个多频信号的频谱图,蜂窝运营商可能在特定地理区域使用这些多频信号,其中第二通信信道被干扰信号破坏;图1B是示出五个通信信道的相应五个多频信号的频谱图,第二无线服务提供商/运营商可以在特定地理区域使用这些多频信号,其中通信信道具有比图1A中的通信信道更小的带宽,其中两对信道彼此相邻;图2A是示出根据本发明一些实施例的具有数字滤波器和数字移频器的双向中继器实例的方框图;图2B是示出根据本发明一些实施例的具有数字滤波器、控制单元、性能监视器和调制解调器的双向中继器实例的方框图;图3是示出图2A的数字滤波器和移频器块的可能实施例的方框图;图4A至4C是示出图3中数字滤波器1400A至1400D的频率响应的实例的频谱图;图4D是示出在移位频率处数字正弦信号的频域表示实例的频谱图;图4E和4F是示出移频的通信信道的实例的频谱图;图5A示出了根据本发明一些实施例的多信道数字滤波配置或块的方框图;图5B是示例性描述由图5A的多信道数字滤波块的上行链路路径中的元件对信号影响的一系列频谱图; However, in the use of the accompanying drawings, the detailed description below, reference may best be understood with regard to the present invention, the organization and method of operation, as well as objects, features and advantages of the present invention, in which: FIG. 1A is a diagram showing four communication channels corresponding spectrogram four multi-frequency signal, the cellular operator may use these multi-frequency signal in a specific geographic region, wherein the second communication channel is destroyed interference signal; Fig. 1B is a multi-frequency signal corresponding to the five shown five communication channel spectrogram, a second wireless service provider / operator can be used in a particular geographical area of these multi-frequency signal, wherein the communication channel having the smaller than in FIG. 1A communication channel bandwidth, wherein the two pairs of channels adjacent to each other; Fig. 2A is a block diagram showing the present invention has a number of two-way relaying digital filters and digital frequency shifter according to an example embodiment; FIG. 2B is a diagram illustrating the present invention has a number of digital filters, the control unit, the embodiment of the performance monitoring a block diagram of a modem and an example of two-way repeater; FIG. 3 is a diagram showing a block diagram of a digital filter and frequency shifter block. 2A possible embodiment; Figs. 4A to 4C are diagrams showing the digital filter 3 1400A to 1400D spectrum diagram example of the frequency response; FIG. 4D is a diagram showing a shift in the frequency domain digital sinusoidal signal at a frequency spectrum diagram showing an example; Fig. 4E and 4F is a spectrum diagram showing the frequency shift of an example of a communication channel; 5A shows a block diagram of the configuration according to the present invention or block some multichannel digital filter embodiment; FIG. 5B is an exemplary uplink path described by multichannel digital filtering block of Fig. 5A elements affect a signal Series spectrum;

图5C是示例性描述由图5A的多路径数字滤波配置的下行链路路径中的元件对信号影响的一系列频谱图;图6A是根据本发明一些实施例的作为替代的数字滤波配置或块140的方框图,其包括快速傅里叶变换(“FFT”)、可编程帧成形和逆快速傅里叶变换(“IFFT”);图6B是示例性描述由图6A的数字滤波块中的每个元件对信号影响的一系列时域和频谱图;图7是显示根据本发明一些实施例的另一个具有数字滤波器和数字移频器的双向中继器实例的方框图,其中可以调整和/或调节数字滤波器和移频参数;图8是显示具有数字滤波系统和/或移频的通信信道的方框图,该数字滤波系统和/或移频可以例如在基站前端前面与根据本发明一些实施例的塔式安装放大器(TMA)或塔式顶端放大器(TTA)结合,该塔式安装放大器(TMA)或塔式顶端放大器(TTA)用于和基站一起操作;图9是描述根据本发明一些实施例的实现数字滤波的方法的流程图。 5C is an exemplary downlink path is described by multi-path digital filtering configuration of Fig. 5A of the elements of the impact of a series of frequency spectrum signals; Figure 6A is a block configuration according to the present invention, some or as an alternative embodiment of the digital filter block diagram 140 comprising a fast Fourier transform ("FFT"), programmable frame shaping and Inverse Fast Fourier Transform ("IFFT"); FIG. 6B is an exemplary digital filter described by FIG. 6A, each block elements of a series of time-domain signals and affect spectrogram; FIG. 7 is a block diagram of a digital filter having a frequency shifter and a digital two-way repeater according to some examples of another embodiment of the present invention, which can be adjusted and / or adjusting parameters of the digital filter and frequency shift; FIG. 8 is a digital filtering system, and / or block diagram of a frequency shift of the communication channel with the digital filtering system, and / or frequency shift with some embodiments according to the present invention, for example in front of the front end of the base station tower-mounted amplifiers cases (TMA) or tower top amplifiers (TTA) combine the tower-mounted amplifier (TMA) or tower top amplifiers (TTA) and a base station for operating together; Figure 9 is a description of some of the present invention a flowchart of a method of digital filtering according to an embodiment.

应该理解,为了示例的简单和清楚起见,附图中显示的元件并没有必要按照比例进行绘制。 It should be understood that for simplicity and clarity of example, the display elements in the drawings and is not necessary drawn to scale. 例如,由于清楚起见,部分元件的尺寸相对于其它元件可能被放大。 For example, due to clarity, the size of elements of the portion relative to other elements may be exaggerated. 而且,在适当的情况下,可以在附图中重复附图标记以表示相应或相似的元件。 Furthermore, under appropriate circumstances, may be repeated in the drawings, reference numeral to denote corresponding or similar elements.

具体实施方式 DETAILED DESCRIPTION

在下文的详细描述中,阐述了许多特定的详细内容,以便提供对本发明的全面理解。 In the detailed description below, set forth numerous specific details in order to provide a thorough understanding of the present invention. 然而,本领域的普通技术人员将会认识到,可以不通过这些特定的详细内容实施本发明。 However, one of ordinary skill in the art will recognize that the present invention can be implemented without these specific details. 另外,并没有详细描述众所周知的方法、过程、组件和电路,以致于不会混淆本发明。 In addition, and not described in detail known methods, procedures, components and circuits, so as not to obscure the present invention.

除非另外有特殊声明,应该理解,在整个说明书的讨论中,使用的术语诸如“处理”、“计算”、“运算”、“确定”等涉及计算机或计算机系统、或类似的电子计算设备的动作和/或处理,这些电子计算设备把诸如计算系统的寄存器和/或存储器内的电子量的表示为物理量的数据,操作和/或变换成其它数据,该其它数据类似地表示为计算机系统的存储器、寄存器或其它这种信息存储器、传输或显示设备内的物理量。 Unless otherwise specifically stated, it should be understood that in the discussion throughout the specification, the terms used such as "processing", "computing", "operation", "OK" and other actions related to computer electronic computing device or computer system, or similar and / or treatment of these electronic computing device such as the computing system's registers and / or an amount of electronic memory data represented as physical quantities, operating and / or converted into other data, the other data similarly represented as computer system memory , registers or other such information storage, transmission or display devices physical quantities within.

本发明的实施例可以包括用于执行这里操作的设备。 Embodiments of the present invention may include an apparatus for performing this operation. 这种设备可以是专用的,或者可以使用通过计算机中存储的计算机程序选择性激活或重新配置的通用计算机来实现这种设备。 Such devices may be dedicated, or may be used by a computer program stored in the computer selectively activated or reconfigured by a general purpose computer to implement such a device. 这种计算机程序可以被存储在计算机可读存储介质中,例如但并不局限于任何类型的磁盘,包括软盘、光盘、CD-ROM、磁光盘、只读存储器(ROM)、随机存取存储器(RAM)、电可编程只读存储器(EPROM)、电可擦除可编程只读存储器(EEPROM)、磁卡或光卡、或者适合用于存储电子指令、并且能够连接到计算机系统总线的任何其它类型的介质。 Such a computer program may be stored in a computer-readable storage medium, such as, but not limited to any type of disk storage, including floppy disks, optical disks, CD-ROM, magneto-optical disks, read-only memory (ROM), a random access memory ( RAM), electrically programmable read only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), magnetic or optical cards, or suitable for storing electronic instructions, and can be connected to any other type of computer system bus media.

这里提出的方法和显示并不是固有地与任何特定的计算机或其它设备相关。 The method proposed here and the display is not inherently related to any particular computer or other apparatus. 根据本文的教导,可以使用具有程序各种通用系统,或者可以证实构造更专用的设备以执行期望的方法更为方便。 According to the teachings herein, may be used with programs Various general purpose systems, or it may prove to construct more specialized apparatus to perform desired method more convenient. 从下面的叙述中将清楚得到用于各种这些系统的期望结构。 Apparent from the following descriptions for a variety of these systems give the desired structure. 此外,本发明的实施例并没有参照任何特定的编程语言进行叙述。 Further, embodiments of the invention and without reference to any particular programming language will be described. 应该明白,可以使用各种编程语言来执行本文所叙述发明的教导。 Be understood that a variety of programming languages may be used to perform the teachings of the invention described herein.

现在参考图2A,图2A中示出了根据本发明一些实施例的具有数字滤波器和数字移频块140U的双向中继器100的方框图。 Referring now to Figure 2A, Figure 2A shows a block diagram 100 in accordance with some embodiments of the present invention having a digital filter and a digital frequency shift block 140U bidirectional repeater. 双向中继器100可以包括两个基本部分:(A)接收来自移动设备(例如蜂窝电话)的信号并将信号重新发送到基站的上行链路部分;和(B)接收来自基站或上行中继器的信号并将信号重新发送到移动设备或下行中继器的下行链路部分。 Bi-directional repeater 100 may include two basic components: (A) the received signal and the signal from the mobile device (e.g., cellular telephone) is re-sent to the uplink of the base station; and (B) received from the base station or the uplink relay the signal and re-transmits the signal to the downlink portion of the mobile device or the downlink repeater.

首先从左到右观看图2A中的上行链路部分(A),可存在输入滤波器110U,对于本实例,该输入滤波器110U可以是射频(“RF”)滤波器,或者更具体来说,它可以是被调谐到通过例如800至830MHz的工作频带范围中的频率的滤波器。 First from left to right viewing Fig. 2A uplink portion (A), there may be input filter 110U, for this example, the input filter 110U may be a radio frequency ("RF") filter, or more specifically , it can be tuned to work by, for example 800 to 830MHz frequency band of a frequency filter. 输入RF滤波器110U可以接收来自天线的信号,并可以将位于一个或多个通信信道的频率范围的待中继的频率传送到下变频器120U。 Input RF filter 110U may receive signals from the antenna, and can be located in one or more communication channels of the frequency range to be transmitted to the next repeater frequency converter 120U. 下变频器120U可以将接收信号与给定频率的正弦或余弦信号混频,以使接收信号可以被下变频为中频(“IF”)信号。 Sine or cosine signal is mixed down converter 120U may receive a signal with a given frequency, so that the receiving signal may be downconverted to an intermediate frequency ("IF") signal. 或者,该接收的信号可以被直接下变频为期望的RF信号。 Alternatively, the received signal may be down-converted to a desired RF signal directly. 输入RF滤波器110U或下变频器120U或二者都可以包括信号放大器(在图2中未示出)。 Input RF filter 110U or the down converter 120U or both may include a signal amplifier (not shown in FIG. 2). 模数(“A/D”)转换器130U可以例如以60M采样/每秒的速率对IF信号进行采样,并可以产生表示采样的IF信号的数字信号。 Analog to digital ("A / D") converter 130U may, for example at a rate of 60M samples / second samples of the IF signal and may generate a digital signal representing the sampled IF signal. 代表IF信号的数字信号可以进入数字滤波器和移频块140U。 A digital signal representative of the IF signal may enter digital filter and frequency shift block 140U.

现在参考图3,图3中显示了数字滤波器和移频块140U的示意性实施例的方框图,该数字滤波器和移频块140U包括例如数字滤波器1400A至1400D、混频器146A和146B、数字正弦发生器144A和144B。 Referring now to Figure 3, Figure 3 shows a block diagram of an illustrative embodiment of the digital filter block 140U and the frequency shift, and frequency shift of the digital filter block 140U including digital filters, for example 1400A to 1400D, mixers 146A and 146B digital sine generator 144A and 144B. 在数字滤波器和移频块140U中实现的移频器可以是数字的。 And frequency shift in the digital filter block 140U implemented frequency shifter may be digital. 输入块140U的数字信号可以通过多个数字滤波器1400A至1400D中的每个数字滤波器进行滤波,每个数字滤波器的输出可以通过加法器142或功能等效的设备进行组合。 A digital signal input block 140U may be filtered by a plurality of digital filters 1400A to 1400D in each digital filter, the output of each digital filter may be combined by the device 142 or functionally equivalent adder. 数字滤波器140U中的每个滤波器可以具有单独和不同的频率响应,例如不相关定义的频率响应。 Digital filter 140U Each filter may have separate and distinct frequency response, e.g., a frequency response is not related definitions. 数字滤波器140U和/或140D可以包括任何数量的数字滤波器和/或滤波器的组合,图3中的四个数字滤波器1400A至1400D仅作为例子描述。 Digital filters 140U and / or 140D may include any number of digital filter and / or a combination of filters, and Fig. 3 the four digital filters 1400A to 1400D described as an example only.

在通信领域中数字滤波器是众所周知的。 In the communication field of the digital filter is well known. 可以使用单个处理器或多个处理器,例如使用数字信号处理器(“DSP”)来实现数字滤波组,或者可以在例如现场可编程数字滤波器的单用途或多用途专用数字滤波电路上实现数字滤波器组。 May use a single processor or multiple processors, for example using a digital signal processor ("DSP") to implement a digital filter group, or may be implemented, for example a field programmable single use or multi-purpose digital filter dedicated digital filter circuit digital filter bank. 在图3的实例中,显示了五个分立的数字滤波电路。 In the example of Figure 3, shows five separate digital filter circuit. 作为本发明实施例的一部分,数字滤波器1400A至1400D可以是现场可编程数字滤波器(“FPDF”)。 As part of an embodiment of the present invention, the digital filter 1400A to 1400D can be field programmable digital filters ("FPDF"). 也就是说,每个滤波器的转移函数和其频率响应都可以根据需要进行编程、重新编程或调整。 That is, the transfer function of each filter and its frequency response can be programmed as desired, re-programming or adjustments.

现在参考图4A至图4C,图中显示了图3的数字滤波器1400A至1400D可能的频率响应的实例,其中数字滤波器1400A至1400D可以分别对应在图1A中举例说明的第一至第四通信信道。 Referring now to Figures 4A to 4C, the figure shows a diagram of a digital filter 3 1400A to 1400D Examples of possible frequency response, wherein the digital filters 1400A through 1400D may correspond to the first to fourth illustrated in Figure 1A of communication channel. 也就是说,可以分别设置或调整每个数字滤波器1400A至1400D的脉冲响应或频率转移特性,以便通过位于滤波器的相应通信信道的载波/中心频率上或其周围数字信号的频率分量。 That is, or can be set individually adjust each of the digital filters 1400A to 1400D of the impulse response or frequency transfer characteristic so that the filter is located by a respective communication channel on a carrier / center frequency or a frequency component around the digital signal. 例如,数字滤波器1400A可以采用转移函数进行编程,该转移函数具有峰值在图1A中显示的第一通信信道的载波频率上或其周围的带通频率响应。 For example, 1400A digital filter transfer function can be used to program, the transfer function having a first carrier frequency on the communication channel of the peak shown in FIG. 1A or around a bandpass frequency response. 数字滤波器1400C可以采用转移函数进行编程,该转移函数具有峰值在图1B中显示的第三通信信道的载波/中心频率上或其周围的带通频率响应,由于图1B中显示的信道比图1A显示的信道窄,因此数字滤波器1400C可以具有比滤波器1400A更小的带宽。 The carrier / center frequency of the bandpass frequency of the digital filter 1400C or around the transfer function can be programmed, the transfer function has a third communication channel peak shown in FIG. 1B response, since the channel shown in FIG. 1B than in FIG 1A shows the narrow channel, and therefore the digital filter 1400C may have a smaller bandwidth than filter 1400A.

图3的数字滤波器1400B1和1400B2可以被串联配置,如图4B中所示,每个数字滤波器可以被编程成具有与其它数字滤波器部分重叠的带通频率响应。 FIG digital filter 3 1400B1 and 1400B2 may be arranged in series, as shown in FIG. 4B, each digital filter can be programmed to have a partially overlapping with other digital bandpass filter frequency response. 组合滤波器所产生的频率响应的应用可以排除干扰信号,如排除在图1A的运营商A的第二信道中显示的干扰信号。 Application of the frequency response of the combined filter can eliminate interference generated by the signal, such as to exclude the interference signal of the second channel carrier A shown in FIG. 1A. 如果在通信信道的频带中存在干扰信号,滤波器可以被配置为在干扰信号的频率上或其周围产生具有两个子频带或陷波频带或阻带的频率响应。 If the jamming signal is present in the communication channel frequency band, the filter may be configured in frequency interference signal or a frequency is generated around the two sub-bands having band or notch or stopband response. 例如,如图1A中所示,通信信道(第二通信信道)可以具有在例如824MHz和849MHz(已知的蜂窝频带)之间的频率分量,而且例如来自邻国的电视信号的干扰信号可能具有例如839MHz至840MHz的频带。 For example, as shown in the figure, the communication channel 1A (second communication channel) may have, for example, frequency components 824MHz and 849MHz (known in the cellular band) between, for example, interference signals and television signals from neighboring countries may have For example 839MHz to 840MHz band. 滤波器1400B1和1400B2可以被配置成产生频率响应,用于通过在蜂窝频带之间的绝大部分频率分量,并排除和抑制在例如839MHz至840MHz之间的频率分量,从而阻止干扰信号通过数字滤波器140U进行传播和中继或重新发送。 Filters 1400B1 and 1400B2 may be configured to generate a frequency response for passing the majority of the cellular band between frequency components, and the exclusion of and suppressing the frequency components in e.g. between 839MHz to 840MHz, thereby preventing interference signal by digital filtering The transmission and relay device 140U or resend. 可以使用多种滤波器设计,例如陷波滤波器、阻带滤波器、两个子频带滤波器、或任何其它合适的滤波器和/或滤波器的组合,来产生选择的滤波响应。 Can use a variety of filter design, such as a notch filter, the stopband filter, the two sub-band filters, or with a combination or any other suitable filter / filters, to produce the selected filter response. 例如,选择的滤波响应可以具有通过通信信道的绝大部分频率分量、和抑制或排除在通信信道频带内的干扰信号的频率分量的性质。 For example, may have a filter response selected by the vast majority of the communication channel frequency components, and the properties of inhibiting or exclude interference signal frequency components within the communication channel band. 这样,对干扰信号的频率响应可以基于预定的、例如预期的干扰图案,例如但并不局限于来自邻国的电视信号,或者响应于实际接收的干扰信号,例如可能预先并不知道的临时随机信号。 Thus, the frequency response of the interfering signal may be based on a predetermined, such as the expected interference pattern, such as, but not limited to television signals from neighboring countries, or in response to the interference signal is actually received, for example, may not know in advance the temporary random signal.

具有期望转移函数的数字滤波器的物理设计在本领域中是众所周知的。 Physical having a desired transfer function in the digital filter design are well known in the art. 尽管上文提到了特定的滤波器和转移函数,但是可以使用目前已知的或将在未来设计的任何数字滤波器和转移函数组合作为本发明的一部分。 Although specific reference filter and transfer function above, but can be used for any presently known functions or a combination of the digital filter and the design of the transfer in the future as part of the invention. 而且,单个或多个滤波器可以包括本领域众所周知的ASIC和FPGA和/或DSP引擎,其可以响应于干扰信号的频率分量偏移进行重新编程。 Moreover, a single or plurality of filters may include those well known in the ASIC and FPGA and / or DSP engine, which may be responsive to the frequency offset of the interference signal component reprogramming. 也就是说,如果干扰信号的频带改变,可以手动地或自动地重新编程该数字滤波器或多个滤波器,以便移位陷波或阻带区域,从而对应干扰信号的频带。 That is, if the interference band changing signal can be manually or automatically re-programming of the digital filter or multiple filters in order to shift the notch or stop band region, thus the frequency band corresponding to the interference signal. 可以改变陷波滤波器的性能,以便优化信道性能。 The notch filter can be changed performance, in order to optimize channel performance. 例如,通过重新编程和/或修改各种如滤波器带宽、衰减、延迟的参数,通过修改滤波器斜率,或者通过提供线性相位,和最小输入/输出频带延迟变化等,就可以实现信道性能的这种优化。 For example, by re-programming and / or modify various filter bandwidths such as attenuation, delay parameter, by modifying the filter slope, or by providing a linear phase, and the minimum input / output band delay change, you can achieve the performance of the channel This optimization.

如图3中所示,具有三个数字移频单元。 As shown in Figure 3, has three digital frequency shift unit. 第一移频单元可以包括例如数字正弦信号发生器114A,其用于在移频Fshift1处产生如数字控制振荡器的数字正弦信号,还包括将数字正弦信号与如数字滤波器1400D的数字滤波器的输出进行混频的数字混频器146A。 A first frequency shift unit may comprise, for example a digital sinusoidal signal generator 114A, for generating a digital controlled oscillator in a digital sinusoidal signal at the frequency shift Fshift1, further comprising a digital sinusoidal signal with a digital filter as the digital filter 1400D mixing the output of the digital mixer 146A. 第二移频单元可以包括用于在移频Fshift2处产生数字正弦信号的数字正弦信号发生器144B,还包括将数字正弦信号与数字信号加法器142的输出进行混频的数字混频器146B。 The second unit may include a frequency shift in the frequency shift Fshift2 digital sinusoidal signal generated at a digital sinusoidal signal generator 144B, further comprising a digital sine signal and a digital output signal of the adder 142 for mixing the digital mixer 146B. 第三移频单元可以包括用于在移频Fshift3处产生数字正弦信号的数字正弦信号发生器144C,还包括用于将数字正弦信号与如1400C的数字滤波器的输入进行混频的数字混频器146C。 A third shift frequency unit may comprise means for generating a digital sinusoidal signal generator 144C in the digital sinusoidal signal at the frequency shift Fshift3, further comprising means for digital sinusoidal signal and the input of the digital filter as 1400C for mixing digital mixing is 146C. 信号移位单元可以将施加于其上的信号的频率偏移由它们各自的数字正弦发生器产生的数字正弦信号的频率。 Signal shift unit of the frequency signal may be applied thereto by their respective frequency offset of a digital sine generator generates a digital sinusoidal signal. 图4D显示了数字正弦信号的频谱图,该数字正弦信号呈现为在信号频率(Fshift)处的脉冲。 Figure 4D shows a spectrum diagram of a digital sinusoidal signal, the digital sinusoidal signal appears as a pulse in the signal frequency (Fshift) nm. 图4E显示了描述单个通信信道的频率分量移位的频谱图,如应用移频器给数字滤波器140的输入或输出所产生的结果。 Figure 4E shows a description of a single communication channel of a frequency shift of the spectrum components, such as the application of the frequency shifter 140 is input to the digital filter or outputs the generated results. 图4F显示了描述多个通信信道的频率分量移位的频谱图,正如应用数字移频器给数字信号加法器142的输出产生的结果。 Figure 4F shows a description of a plurality of communication channels of the frequency components shifted spectrum, the result as to the application of the digital frequency shifter output digital signal of the adder 142 generated.

通常,将数字信号和数字正弦信号混频可以引起数字信号频率分量移位正弦信号的频率。 Typically, the digital signal and the digital sinusoidal signal is mixed digital signal frequency components can cause a shift of the frequency of the sinusoidal signal. 移位可以是频率向上或向下移动,通过该过程还可以产生谐波。 Frequency shift can be moved upwardly or downwardly, through the process may also produce harmonics. 这样,可以使用滤波器隔离期望的频带。 Thus, the filter may be used isolate a desired frequency band. 如果需要的话,可以使用数字滤波器从混频器146A和146A的输出中去除谐波。 If desired, the digital filter may be used to remove harmonics from the output of the mixer 146A and 146A of.

现在回到图2A,图2A中显示了直接在数字滤波器和移频块140U之后的数模转换器(“D/A”)150U。 Returning now to FIG. 2A, FIG. 2A shows a direct digital filter and frequency shift in the digital to analog converter block ("D / A") 140U after 150U. D/A 150U可以将块140U的数字信号输出转换为模拟信号,然后可以通过上变频器160U将该模拟信号上变频为在输入RF滤波器110U处接收的原始频率。 D / A 150U block 140U may be a digital signal into an analog output signal, then the up-converter 160U through the analog signal converted to an RF filter 110U input received at the original frequency. 可以使用输出滤波器170U去除可能由上变频器160U引入信号的谐波。 170U can be used to remove the harmonic output filter may be introduced by the inverter 160U signal. 上变频器160U和输出RF滤波器170U中的任一元件或二者都可以包括信号放大器(在图2A中未示出)。 Upconverter output RF filter 160U and 170U any one element or both may include a signal amplifier (not shown in FIG. 2A). 然后,经滤波的信号可以传播到传输天线,并从传输天线传播出去。 Then, the filtered signal can be transmitted to the transmission antenna, and is radiated from a transmission antenna.

双向中继器100的下行流或下行链路(B)部分基本上可以与上面讨论的上行流部分(A)成镜像。 Bidirectional repeater downstream or downlink (B) 100 parts of a substantially upstream portion (A) discussed above can be a mirror image. 一个区别可以是输入RF滤波器110D、数字滤波器和数字移频块140D以及输出RF滤波器170D可以被调谐为接收和通过下行通信信道的频率,这与通过在上行通信信道上或其周围的频率相反。 One difference may be an input RF filter 110D, digital filters and digital frequency shift block 140D and output RF filter 170D may be tuned to receive a downlink communication channel and via a frequency, which is in the upward communication channel through or around Instead frequency.

每个滤波器设置的特定频带可以取决于通信信道、上行和下行的特定频率,运营商可能希望在特定的地理位置内中继所述频率。 Each filter is provided in a particular frequency band can depend on the communication channel, the uplink and downlink of a specific frequency, the carrier frequency of the relay may be desirable in a particular geographic location. 在图1A和图1B中显示的频率仅仅是这种通信信道频率的实例。 Frequency 1A and 1B, shown are only examples of such communication channel frequencies. 在图2A中的上行和下行信道之间没有区别。 No difference between the upstream and downstream channels in FIG. 2A. 然而,本领域的普通技术人员将会明白,在蜂窝系统或在任何其它的双向无线通信系统中,可以存在每个与下行通信信道相应的上行通信信道。 However, one of ordinary skill in the art will appreciate, in a cellular system or in any other two-way wireless communication system, there may be a downlink communication channel with each corresponding uplink communication channel. 可以固定上行信道频率和下行信道频率之间的关系,或者可以通过移动设备和基站之间的协商或单独设置在每个上行信道频率和下行信道频率。 Can be fixed relationship uplink channel frequency and downstream channel frequency between, or may be negotiated between the mobile device and the base station or be set independently for each upstream channel frequency and downstream channel frequency.

现在参考图2B,图2B中显示了本发明实施例的方框图,包括控制单元200,该控制单元200被连接到数字滤波器140U和140D,并接收来自性能监视器180的性能数据。 Referring now to Figure 2B, Figure 2B shows a block diagram of an embodiment of the present invention, includes a control unit 200, the control unit 200 is connected to the digital filters 140U and 140D, and the receiving performance data from the performance monitor 180. 控制单元200可以编程和/或调整数字滤波器140U或140D中的每个数字滤波器1400A至1400D(在图3中显示)的配置、参数和因此产生的滤波特性。 The control unit 200 may be programmed and / or adjust the digital filter 140U or 140D in each of the digital filters 1400A to 1400D (shown in FIG. 3) of the configuration, parameters, and thus the filter characteristic produced. 控制单元200可以基于远程接收的指令(例如,经由调制解调器或其它外部来源)、或者响应从性能监视器180接收的性能信号,基于在参数数据库210A和210B中存储的参数,来编程或调整每个数字滤波器1400A、1400B、1400C或1400D。 Based on the remote control unit 200 may receive instructions (e.g., via a modem or other external source), or in response to signals received from the performance of the performance monitor 180, based on the parameters stored in the database 210A and 210B of parameters to adjust for each program or The digital filter 1400A, 1400B, 1400C or 1400D.

根据本发明的一些实施例,控制单元200可以编程或调整特定的数字滤波器1400A、1400B、1400C或1400D、或集中地编程或调整数字滤波器组140U和140D的参数和/或数字滤波系数,以便适应与特定通信信道或通信信道的集合相关的操作或性能需求。 According to some embodiments of the present invention, the control unit 200 may program or adjust a specific digital filter 1400A, 1400B, 1400C, or 1400D, or collectively programming or adjusting the digital filter bank 140U and 140D of the parameters and / or the digital filter coefficients, operation or performance in order to accommodate the needs of a particular communication with a collection channel or communication channel dependent. 例如,控制单元200可以编程与图1A中第一通信信道的频带对应的数字滤波器1400A-1400D中的一个滤波器。 For example, the control unit 200 may be programmed with the band in Fig. 1A corresponding digital filter 1400A-1400D a first communication channel in a filter. 这样,控制单元200可以用能产生带通频率响应特性的数字滤波器配置和系数来产生或生成数字滤波器1400A、1400B、1400C或1400D,该带通频率响应特性与图1A中的第一通信信道的中心频率和带宽相一致。 Thus, the control unit 200 may be used to produce a bandpass frequency response characteristic digital filter configuration and coefficients used to produce or generate digital filter 1400A, 1400B, 1400C, or 1400D, the band-pass frequency response characteristics of FIG. 1A first communication center frequency and bandwidth of the channel is consistent. 控制单元200可以采用配置和系数来编程或调整第二数字滤波器,以产生具有和图1A中第二通信信道的中心频率和带宽相一致的带通频率响应特性的第二数字滤波器1400A、1400B、1400C或1400D,并在带通区域中具有陷波。 The control unit 200 may be used to configure and to program or adjust the coefficients of the second digital filter to produce a FIG. 1A and center frequency and bandwidth of the second communication channel consistent band pass frequency response characteristic of the second digital filter 1400A, 1400B, 1400C or 1400D, and has a notch in the bandpass region.

同样,在同一数字滤波器组140U或140D中,如在上面直接提到的第一和第二数字滤波器组中一样,控制单元200可以编程第三数字滤波器来滤波如图1B中显示的第五信道单个窄带通信信道,或一组如图1B中显示的第三和第四通信信道的相邻窄带信道。 Similarly, in the same digital filter bank 140U or 140D, the first and second digital filter bank as in the above-mentioned direct as in the control unit 200 may be programmed to filter the third digital filter shown in Figure 1B The fifth channel single narrowband communication channel, or a set of adjacent narrowband channels third and fourth communication channels shown in FIG. 1B. 每个数字滤波器1400A-1400D可以采用独特和独立的配置和系数进行编程,并可以具有完全与数字滤波器组140U或140D中任何其它滤波器的配置和系数不相关的频率响应。 Each digital filter 1400A-1400D can be unique and independent of the configuration and the coefficient is programmed, and may have a complete response and a digital filter bank 140U or 140D in any configuration and other factors not related to the frequency of the filter.

控制单元200可以响应来自性能监视器180的信号,调整滤波器的配置和/或系数。 The control unit 200 may respond to a signal from the performance monitor 180, to adjust the configuration and / or the filter coefficients. 根据本发明的实施例,性能监视器180可以监视如信号延迟、相移、在一个或多个滤波器和/或系统的一个或多个其它组件上的增益的参数。 According to an embodiment of the invention, such as the performance monitor 180 can monitor signal delay, phase shift, in a one or more filters and / or one or more other components of the system parameter gain. 例如,如果性能监视器指示控制器在滤波器1400A-1400D中的一个上的信号延迟、相移和/或信号损耗超过了门限值,控制单元200可以调整或改变数字滤波器的配置,以进行相应地补偿。 For example, if the performance monitor signal indicating a controller on the filter 1400A-1400D delay, phase shift and / or loss of signal exceeds the threshold, the control unit 200 may adjust or change the configuration of the digital filter, to accordingly compensated. 通常,与相对较为简单的配置相比,复杂的滤波器配置可以提供更为精确定义和增强的滤波参数;然而,这种增强参数的获得可以滤波器上的时间延迟和相移为代价。 Typically, compared with the relatively simple configuration, a complex filter arrangement can provide a more precise definition and enhanced filtering parameters; however, this enhanced temporal filter parameters can be obtained on the expense of the delay and phase shift. 因此,根据本发明的一些实施例,如果控制单元200确定特定的滤波器1400A至1400D具有过量的延迟和/或相移,那么控制器可以将该特定滤波器重新编程或调整为较简单的配置。 Thus, according to some embodiments of the invention, the control unit 200 determines if a particular filter 1400A to 1400D have excess delay and / or phase shift, the controller may be reprogrammed or adjusted that particular filter configuration is relatively simple . 可以手动地和/或自动地执行这种重新编程。 May be manually and / or automatically perform such reprogramming. 尽管较简单的滤波器配置可能产生较差的特性,如在滤波器频带的边缘上较小、更不确定的斜率,但是可以显著地提高这种配置的延迟和/或相移值。 Although relatively simple filter configurations may have poor characteristics such as small on the edges of the filter band, the more uncertain the slope, but can significantly improve the delay and / or phase shift value of this configuration. 在另一个实例中,控制单元200可以编程数字滤波器1400A、1400B、1400C或1400D,以使其具有足够的带宽来通过多个相邻通信信道,例如图1B中的第三和第四信道的的频率分量。 In another example, the control unit 200 may be programmed digital filter 1400A, 1400B, 1400C, or 1400D, so as to have enough bandwidth to communicate via a plurality of adjacent channels, e.g., FIG. 1B and the fourth channel of the third frequency components. 应该理解,在某些的操作条件下,诸如当使用数字滤波器1400A、1400B、1400C或1400D中的一个滤波两个通信信道时,修改数字滤波器的配置和系数,以便具有更宽的带通区域和/或更短和更不确定的斜率是有益的。 It should be understood that under certain operating conditions, such as when using a digital filter 1400A, 1400B, 1400C, or 1400D one filter of two communication channels, configure and modify the coefficients of the digital filter so as to have a wider band-pass regional and / or shorter and more uncertain slope is beneficial.

本领域的普通技术人员应当清楚,控制单元200可以基于在数据库210A和210B中存储的数据、或者基于从例如经调制解调器220等的远程来源接收的数据、或者基于这两者的组合,来动态地改变任何一个滤波器1400A-1400D的配置和系数。 Of ordinary skill in the art should be clear that the control unit 200 may be based on the database 210A and 210B stored in the data, or based on, for example via the modem 220 from a remote source such as the received data, or based on a combination of both, to dynamically Any change in the configuration of the filter 1400A-1400D and coefficients. 数据库210A可以存储与下行链路转换有关的数据,数据库210B可以存储与上行链路转换有关的数据。 Database 210A may store data related to the downlink conversion, database 210B may store data related to the uplink conversion. 例如,控制器可以通过调制解调器220接收指令,以便将当前配置为通过仅仅一个通信信道的滤波器的带宽重新配置为现在通过两个通信信道。 For example, the controller 220 may receive instructions through a modem so that the current bandwidth filter configured by only one communication channel is reconfigured to now through two communication channels. 可以基于在数据库210A和210B中的数据,来指示控制单元200重新配置滤波器,以及/或者可以经调制解调器220向控制单元200提供新的配置和系数。 May be based on data in the database 210A and 210B, the control unit 200 to indicate to reconfigure the filter, and / or 220 to the control unit 200 may provide a new configuration and coefficients via the modem. 而且,可以例如经调制解调器220,将来自远程源的新滤波器配置和系数数据首先上载到数据库210A和210B中,之后控制单元200可以接收指令,基于新的数据来重新配置滤波器1400A、1400B、1400C和/或1400D。 New filter coefficient data and configuration and, through the modem 220 may, for example, from a remote source is first uploaded to the database 210A and 210B, after which the control unit 200 may receive an instruction, based on the new data to reconfigure the filters 1400A, 1400B, 1400C and / or 1400D. 在本发明的另一个实施例中,可以经调制解调器220将来自性能监视180的性能监视数据发送到控制单元200。 In another embodiment of the present invention, can be made by the modem 220 from the performance monitoring performance monitoring data 180 is sent to the control unit 200.

现在参考图8,图8中显示了适于作为常规蜂窝基站、常规中继器、或具有接收机的任何其它通信系统的输入级的本发明实施例。 Referring now to Figure 8, Figure 8 shows a conventional cellular base station is suitable as a conventional repeater, or any other embodiments of a communication system having a receiver input stage of the present invention. 在图8显示的实施例中,可以具有前置滤波级115,它可以包括例如低噪声放大器(“LNA”)和衰减器。 In the embodiment shown in FIG. 8, may have a pre-filtering stage 115, which may include, for example, a low noise amplifier ("LNA") and an attenuator. RF单元125可以包含下变频器,它可以将前置滤波块的输出下变频为中频(“IF”)信号。 RF unit 125 may comprise a down converter, which can be converted to an intermediate frequency ("IF") output signal at the pre-filtering block. 在RF单元125中或者在数字滤波块140U中可以包括A/D转换器(未显示)。 In the RF unit 125 or the digital filter block 140U may include A / D converter (not shown). 通过A/D转换器可以将下变频过的信号转换为数字信号,并按照如上所述内容(参见在图2、图3和图4A-G中的上行链路部分A),通过在数字滤波块140U中的数字滤波器来滤波数字信号。 Through the A / D converter can be down-converted into a digital signal through the signal, and in accordance with the content as described above (see in FIG. 2, FIG. 3 and FIG. 4A-G in the uplink portion A), by digital filtering The digital filter block 140U to filtered digital signals.

本领域的普通技术人员将会明白,如果使用了具有足够高采样速率的A/D转换器,可以不需要模拟信号到中频的下变频。 Ordinary skill in the art will appreciate, if having a sufficiently high sampling rate of A / D converters, may not require analog signals to intermediate frequency down-conversion. 通常,为了获得模拟信号的准确数字表示,需要模拟信号中最高频率分量两倍的采样速率。 Typically, in order to obtain an accurate digital representation of the analog signal, the analog signal is required twice the highest frequency component of the sampling rate. 这样,对中频信号的下变频可以允许使用较慢和较便宜的A/D转换器,然而这不是必需的。 Thus, for the down-converted IF signal may allow the use of slower and less expensive A / D converter, but this is not required.

一旦产生了表示接收的模拟信号的数字信号,可以按照尚未参照图3和4A至4F所述的内容,来执行干扰信号的滤波和通信信道的移频。 Once generated digital signal representation of the analog signal received, in accordance with the contents yet with reference to Figures 3 and 4A to 4F, wherein the filtering is performed and a communication channel interfering signal frequency shift. 数字滤波器1400A、1400B、1400C或1400D可以被配置为产生多个转移特性或频率响应中的任何一个转移特性或频率响应,这包括窄带干扰信号的陷波滤波。 Digital filter 1400A, 1400B, 1400C, or 1400D may be configured to generate a plurality of transfer characteristics, or frequency response or transfer characteristic of any frequency response, which includes the notch filter of narrow-band interference signal.

一旦滤波,通过使用D/A转换器(未显示),可以将数字信号转换回模拟信号。 Once the filter, by using the D / A converter (not shown), a digital signal can be converted back to an analog signal. 如果例如在数字化信号之前,先前使用了对应的下变频步骤,可以上变频D/A转换器的输出。 If, for example before the digitized signal, previously used for down-conversion step corresponds, can upconvert D / A converter output. D/A转换器可以是数字滤波块140U的一部分或RF单元125的一部分。 D / A converter may be part of the digital filter block 140U part or the RF unit 125. 如果使用上变频器,那么它可以是RF单元125的一部分。 If you use the drive, so it can be part of the RF unit 125.

如图8中所示,本发明上述实施例的模拟输出可以提供给常规基站的RF输入级,或者提供给常规中继器的输入级、或者提供给用作RF通信系统一部分的任何其它接收机。 Analog output shown in Figure 8, the above-described embodiments of the present invention may be provided to the RF input stage of a conventional base station, or provided to the input stage of a conventional repeater, or provided to an RF communication system is used as part of any other receivers .

现在参考图5A,图5A中显示了根据本发明一些实施例的图8中块140U的多径数字滤波配置的方框图。 Referring now to Figure 5A, Figure 5A shows a block diagram according to some embodiments of the present invention in a block of 8 140U multipath digital filtering configuration. 图5A的滤波配置可以具有多个平行的信号路径,在这些信号路径中每个信号路径可以引起多个滤波元件。 Filter configuration of FIG. 5A may have a plurality of parallel signal paths, each signal path in the signal path can cause a plurality of filter elements. 第一和第二信号路径可以包括数字下变频器、基带数字滤波器和数字上变频器。 The first and second signal path can include the drive, digital filters and digital baseband digital down-converter. 参照图5B和图5C,图5B中显示了一系列的频谱图,这些频谱图示例性描述了在图5A的多径数字滤波块上面路径中元件对输入信号的影响,图5C中显示了一系列的频谱图,这些频谱图示例性描述了在图5A的多路径数字滤波块下面路径中元件对输入信号的影响。 Referring to FIG. 5B and FIG. 5C, FIG. 5B shows a series of frequency spectrum, which spectrum exemplary description of the influence of components of the input signal, Figure 5C shows a multipath path digital filtering block of Fig. 5A above series of frequency spectrum, the spectrum is described the effect of an exemplary multi-path digital filtering block of Figure 5A following path element of the input signal. 如图5B和5C中所示,数字下变频器可以向下移位数字信号的频率分量,例如移位由第一数字正弦信号源提供的第一数字正弦信号(FDDC)的频率。 As shown in Fig. 5B and 5C, digital down converter can be shifted down frequency component of the digital signal, such as a shift frequency of the first digital sinusoidal signal provided by the first digital sinusoidal signal source (FDDC) of. 根据本发明的一些实施例,可以使用数字基带滤波器来滤波下变频或向下移位的数字信号,数字上变频器可以上变频或向上移位该数字基带滤波器输出的频带,例如,上变频或向上移位由第一或第二数字正弦信号源提供的数字正弦信号(FDUC)的频率。 According to some embodiments of the present invention may be used to filter the digital baseband filter downconverted or downward shift of the digital signal, the digital up-converter can up-conversion or up shifting the band digital baseband filter output, for example, the shifting a frequency up-conversion or digital sinusoidal signal provided by the first or second digital sinusoidal signal source (FDUC) of.

根据本发明的一些实施例,每个数字下变频器和每个数字上变频器可以与单独的数字(例如正弦)信号源相关联,其中可以单独地控制每个数字信号源,以提供在信号源操作范围内的任何频率的单独数字信号。 According to some embodiments of the present invention, each digital converter and digital down-converter with each individual number (e.g., sinusoidal) signal associated with the source, which can be controlled separately for each digital signal source to provide a signal single digital signal at any frequency within the operating range of the source. 可以使用单独的配置和/或滤波器系数来编程每个基站频带数字滤波器。 Configuration may be used alone and / or filter coefficients programming each base band digital filter. 根据本发明的一些实施例,通过控制单元200可以单独地调整或控制数字转换器、数字上变频器、它们相关的数字信号源和每个数字基带滤波器。 According to some embodiments of the present invention, by the control unit 200 can be individually adjusted or controlled digital converters, digital upconverter, their associated digital signal source and each of the digital baseband filter.

现在参考图6A,图6A中显示了可作为替代的数字滤波块140的方框图,在该数字滤波块中通过使用数据成帧单元1401、频谱分析器(例如快速傅里叶变换(“FFT”)引擎)1402、可编程帧整形单元1403和逆快速傅里叶变换(“IFFT”)引擎1404可以实现信号滤波;现在参考图6B,图6B中显示了一系列时域和频谱图,这些时域和频谱图示例性描述了在图6A的数字滤波块中的每个元件对信号的影响。 Referring now to FIG. 6A, FIG. 6A shows a block diagram as an alternative to the digital filtering block 140, by using the data framing unit 1401, a spectrum analyzer in the digital filtering block (e.g., Fast Fourier Transform ("FFT") engine) 1402, a programmable frame shaping unit 1403 and an inverse fast Fourier transform ("IFFT") signal filtering engine 1404 may be implemented; Referring now to Figure 6B, Figure 6B shows a series of time domain and frequency spectrum, the time-domain and spectrogram exemplary description the effect of each element in FIG. 6A in the digital filtering block of signals.

根据图6A的示例性滤波系统,通过数据成帧单元1401可以将采样的数据流分解成单独的数据帧。 Figure 6A is an exemplary filtering system according to the data framing unit 1401 may be sampled data stream into a single data frame. 这些帧可以部分重叠或不部分地重叠,每个帧可以通过快速傅里叶变换引擎1402、或一些其它的时域到频域转换块。 These frames may partially overlap or may not partially overlap, each frame can be a fast Fourier transform engine 1402, or some other time domain to frequency domain conversion block. 由FFT引擎1402输出的每个数据帧可以通过可编程FFT帧整形块1403。 Each data frame by the FFT engine 1402 can be outputted by the programmable FFT frame shaping block 1403. 该帧成形块可以被编程为抑制或陷波滤出(notch out)与不希望有的频率分量相关的帧的部分,并且不影响或可选地,提高与感兴趣频率相关帧中的单元。 The frame shaped block may be programmed to inhibit or notch filtered off (notch out) with portions of the frame of the undesirable frequency components associated with some, and does not affect or alternatively, increase the frequency of interest associated with the frame unit. 可以使用IFFT引擎1404将频域帧转换回时域帧,该频域帧已经通过帧成形单元或块。 IFFT engine 1404 may be used in the frequency domain frame is converted back into the time domain frame, the frequency domain frame or a block unit has been formed through the frame. 然后,可以将这些帧重新组合成代表时域中的原始数据流的数字数据流,但是去除了不想要的频率分量,并未影响或增强想要的频率分量。 Then, the frames may be reassembled into a digital data stream representative of the original time domain data stream, but in addition to unwanted frequency components, did not affect or enhance a desired frequency component. 根据本发明的一些实施例,通过控制单元200可以编程可编程的FFT帧成形单元1403。 According to some embodiments of the present invention, the control unit 200 can be programmed by the programmable FFT frame shaping unit 1403. 根据在控制单元200中编程的指令,通过可编程FFT帧成形单元可以手动或自动地完成去除不想要的频率分量。 Programmed according to the instruction control unit 200, may be done manually or automatically remove unwanted frequency components by the programmable FFT frame shaping unit. 此外,控制单元200可以包括调制解调器,该调制解调器可以实现远程访问,以远程地去除不想要的频率分量、或远程地编程控制单元200。 In addition, the control unit 200 may include a modem, the modem can achieve remote access to remotely remove unwanted frequency components, or remotely programming control unit 200.

与图3和图5A中显示的数字滤波配置或块相比,图6A的滤波配置可以允许通过使用例如三个处理元件,即FFT引擎1402、可编程FFT帧整形单元1403和IFFT引擎1404,来执行大量不相邻的通信信道例如,带宽和中心频率变化的通信信道的滤波。 Digital filtering configuration or block Figs. 3 and shown in Figure 5A, compared filter configuration of Figure 6A may allow processing by using, for example three elements, i.e., the FFT engine 1402, the programmable FFT frame shaping unit 1403 and the IFFT engine 1404 to perform a number of non-adjacent communication channels e.g., bandwidth and center frequency of the filter changes a communication channel. 在这两种滤波方法之间另外的显著区别在于下面的事实,即常规的数字滤波器完全在时域中操作,而图6A的滤波块在去除或取消与不想要的频率分量相对应的值之前,将数字时域信号转换到频域中。 In between these two filtering methods further significant difference is that following the fact that a conventional digital filter is fully in operation domain, and the filtering block of Fig. 6A remove or cancel unwanted frequency components with a value corresponding to the Before converting the digital time domain signal into the frequency domain. 由于将数字时域信号转换为频域信号的过程通常计算强度很大,这样可能引入长的延迟,因此这种处理以前并没有考虑用于实时的数字信号滤波。 Since the digital time domain signal into a frequency domain signal strength calculation process usually large, this may introduce a long delay, so this treatment has not previously been considered for real-time digital signal filtering. 这种处理就本发明而言可以很有用和有价值,例如,为了离线地检测和/或识别重复发生的干扰模式,以便如上所述可以在随后处理这种预期的图案。 This treatment purposes of the present invention can be useful and valuable, for example, off-line in order to detect and / or identify recurring interference pattern, so that subsequent processing such as described above can be expected in a pattern. 为了在以后便于参考,可以在存储器中记录或存储所检测和/或识别的预期模式历史。 For ease of reference in the future, or may be recorded and / or identification of the expected pattern of the detected history stored in the memory.

根据本发明的一些实施例,频域转换引擎和操作该引擎的方法可以提供监视通信信道业务的能力,并且能够检测干扰特性。 According to some embodiments of the present invention, a frequency domain conversion engine and the method of operation of the engine may be provided to monitor the communication channel service capacity, and can detect interference characteristics. 关于现有干扰及其特性的数据可以向如客户的终端用户提供判定该通信信道是否可被干扰损害的工具。 Data on existing interference and its properties can be provided to end users such as customers to determine whether a communication channel interference can be damaged.

现在参考图7,图7中示出了根据本发明的双向中继器100的其它可能实施例。 Referring now to Figure 7, Figure 7 shows other possible embodiments of two-way repeater 100 according to the present invention. 如图2A和2B的双向中继器一样,存在两部分:(A)上行流或上行链路部分,和(B)下行流或下行链路部分。 2A and 2B, like two-way repeater, the presence of two parts: (A) upstream or uplink portion, and (B) a downstream or down-link section. 而且,如图2的实施例一样,除了将它们调谐用于通过和重新发送的频率之外,上行链路和下行链路部分实质上可以彼此镜像。 Further, the embodiment of FIG. 2, except that they are used for tuning the frequency of the retransmitted through and beyond, the uplink and downlink portions may be substantially mirror each other.

请看图7的双向中继器100的下行流或下行链路部分(B),可以具有包含输入RF滤波器110D的双工器。 See Figure 7 two-way relaying downstream or downlink portion (B) 100, and may have an input RF filter 110D comprising a duplexer. 输入RF滤波器110D可以通向前置滤波级115D,前置滤波级115D可以包括低噪声放大器(“LNA”)和衰减器。 Input RF filter 110D may lead to pre-filtering stage 115D, the pre-filtering stage 115D may include a low noise amplifier ("LNA") and an attenuator. 前置滤波块115D的输出可以输入RF单元125D,RF单元125D可以下变频该输出,并且还可以包括A/D转换器。 Output pre-filtering block 115D may enter the RF unit 125D, RF unit 125D which may down-conversion output, and may also include A / D converter. 数字块140D中的数字滤波器和数字移频器可以类似于图2A、2B、3或4A至4C中描述的数字滤波器和数字移频器,或者可以包括适合于本发明的任何其它的数字滤波器和数字移频器。 Digital block 140D of digital filters and digital frequency shifters may be similar to FIG. 2A, 2B, 3, or digital filters and digital 4A to 4C described frequency shifter, or suitable for the present invention may comprise any other number filters and digital frequency shifter. 数字滤波块140D的输出可以输入到RF单元125D,RF单元125D可以上变频该输出,并且还可以包括D/A转换器。 The output of the digital filter block 140D may be input to the RF unit 125D, RF unit 125D may upconvert the output, and may also include D / A converter. 功率放大器块145D可以包括例如,衰减器、高功率放大器和功率监控器。 Power amplifier block 145D may include, for example, attenuators, high power amplifiers and power monitor. 自动增益控制电路(“AGC”)可以调整衰减器,以使从功率放大器块145D的输出信号基本上保持稳定。 Automatic gain control circuit ("AGC") may adjust the attenuator, so that the output signal of the power amplifier block 145D remains substantially stable from. AGC可以实现自动增益设置、自动增益平衡和/或自动振荡保护。 AGC gain setting can be achieved automatically, automatic gain balance and / or automatic oscillation protection. 功率放大器块145D的输出信号可以传播到双工器并通过双工器,该双工器包括输出滤波器170D。 Block 145D amplifier output signal can be propagated through the duplexer and diplexer, the duplexer includes an output filter 170D.

如图2A和2B的双向中继器100一样,可以将图7的双向中继器100配置为中继上行流方向中在特定载波/中心频率上或其周围的通信信道的特定集合,和/或中继下行流方向中在特定的载波频率上或其周围的通信信道的特定集合。 2A and 2B of the two-way repeater 100, as can be bi-directional repeater 100 in Figure 7 is configured as a relay in the upstream direction around a particular set of communication channels on a specific carrier / center frequency thereof, and / or relay downstream direction or around a particular set of communication channels on a specific carrier frequency. 可以调整数字块140U和140D中的数字滤波器和数字移频器,以便仅仅通过位于相关通信信道的载波频率或其周围的频率。 Can be adjusted in the digital blocks 140U and 140D digital filters and digital frequency shifters, so that only through the communication channel frequency is related to a carrier frequency or around. 通过使用数字移频器,可以移位一个或多个通信信道的频率分量。 By using a digital frequency shifter, the frequency component can be shifted one or more communication channels. 可以考虑由于上变频或下变频所产生的载波频率偏移,并在数字滤波器中补偿载波频率偏移。 Can be considered due to the carrier frequency upconversion or downconversion generated offset, and the digital filter compensation carrier frequency offset. 而且,可以调整本发明的双向中继器100,用于陷波滤出通信信道的频带内的窄带噪声干扰。 Further, the present invention can be adjusted bidirectional repeater 100, for narrow-band notch filter out noise of the communication channel band.

图7还示出了连接到沿着上行流和下行流信号路径的各个点的性能监视器180。 Figure 7 also shows the connection to various points along the upstream and downstream signal path 180 of the performance monitor. 可以使用监视器180来跟踪监视,中继器100的各种元件上的如增益、时间延迟和相位的特性,这些元件包括单独的数字滤波器。 May be used to track and monitor the monitor 180, such as gain, time delay and phase characteristics of the various elements of the repeater 100, these elements include a separate digital filter. 监视器180可以向控制器200发送指示所监视特性的信号,控制器200可以响应该监视信号对中继器100的各种元件进行调整,这些元件包括单独的数字滤波器和移频器组140U。 Monitor 180 may instruct the controller 200 to the transmission characteristics of the monitored signal, the controller 200 can respond to the various elements of the monitor signal of the repeater 100 to be adjusted, these elements include a single digital filter and frequency shifter group 140U . 控制器200可以基于在数据库210A和210B中存储的数据以及通过调制解调器220接收的指令或数据,来改变滤波器的配置和系数。 200 210A and 210B may be based on the database stored in the data controller and the instruction or data received through the modem 220, to change the configuration and the filter coefficients. 可以经调制解调器220向远程位置发送性能监视数据。 220 performance monitoring data can be sent via modem to a remote location.

本领域的普通技术人员将会明白,所描述的本发明可以用于各种类型的无线或有线通信系统,这包括但并不局限于塔式安装放大器、无线、有线、电缆或光纤服务器,例如,其中必须滤除窄带干扰的位置、和/或相位线性和滤波参数必须是可软件编程的位置、和/或在通信信道中可能出现干扰的时刻。 Ordinary skill in the art will appreciate that the present invention described herein may be used for various types of wireless or wired communication system, including but not limited to tower-mounted amplifier, radio, cable, fiber optic cable, or a server, e.g. which must be filtered narrowband interference position, and / or phase linearity and filter parameters must be software programmed position, and / or time may appear interference in the communication channel.

根据本发明的一些实施例,提供了用于信号滤波的方法。 According to some embodiments of the present invention, there is provided a method for filtering a signal. 参照图9可以看到,在块90中可以采样接收的信号,并可以产生与时域中接收的信号对应的数据流。 Referring to Figure 9 can be seen, the block 90 can be sampled in the received signal, and may generate a signal corresponding to the time domain received data stream. 在块91中,可以根据与一个或多个相应的通信信道相关的一个或多个频带集合来滤波流。 In block 91, according to one or more respective communication channels associated with one or more set of frequency bands for filtering flow. 在块92中,可以基于一个或多个选择的参数来配置一个或多个通信信道。 In block 92, may be based on one or more selected parameters to configure one or more communication channels. 该方法可以进一步包括,在块93中,在模数转换器进行采样之前将接收的信号下变频为中频,和/或在块94中,将数模转换器的输出上变频为输出射频滤波器。 The method may further include, at block 93, prior to analog to digital converter for sampling at the received signal frequency to an intermediate frequency, and / or in the block 94, the frequency on the output of the DAC output RF filter . 在块95中,该方法可以包括将滤波块的输出转换为模拟信号。 In block 95, the method may include converting the output filtering block into an analog signal. 在一些实施例中,滤波可以包括,在块96中,将来自时域的数据流转换到频域;整形数据流的帧;将来自频域的数据流转换回时域。 In some embodiments, the filtering may include, at block 96, the data stream from the time domain into the frequency domain; shaped frame data stream; the data stream back into the frequency domain from the time domain.

在其他的实施例中,信号滤波方法可以包括监视信号流特性;向控制器指示信号流特性;如果信号流特性不在预定的范围内,就重新配置一个或多个滤波元件。 In other embodiments, the signal filtering method may include monitoring signal flow characteristics; flow characteristic indication signal to the controller; if the signal flow characteristics are not within a predetermined range, on the re-configure one or more filter elements. 在一些实施例中,信号流特性的监视可以包括获得信号、延迟信号、移位信号的相位。 In some embodiments, the monitoring signal flow characteristics may include obtaining a phase signal, the delay signal, the shift signal. 在一些实例中,监视包括经调制解调器向远程位置发送信号流特性。 In some examples, the monitoring includes transmitting a signal flow characteristics through the modem to a remote location.

在其他实施例中,信号滤波方法可以包括实现自动增益设置、自动增益平衡和/或振荡控制。 In other embodiments, the signal filtering method may include automatic gain setting, automatic gain balance and / or the oscillation control. 在其它的实施例中,该方法可以包括分析业务负载。 In other embodiments, the method may include analyzing the traffic load.

尽管本文已经示例和描述了本发明的特定特征,但是本领域的普通技术人员可以想到许多修改、替换、改变和等效。 Although this article have been illustrated and described a particular feature of the invention, those of ordinary skill in the art would recognize many modifications, substitutions, changes, and equivalents. 因此,应该理解附属的权利要求书旨在覆盖位于本发明真实精神范围内的所有这种修改和改变。 Therefore, it should be understood that the appended claims are intended to cover all such modifications and changes located within the true spirit of the invention.

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Classifications
International ClassificationH04B1/707, H04B7/15
Cooperative ClassificationH04B7/15542, H04B1/71, H04B7/15578
European ClassificationH04B1/71, H04B7/155F2
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