DE69027018T2 - Maximalwahrscheinlichkeitsdekodierung mit Störungsdetektion für Frequenzsprungsysteme mit kodierter Modulation - Google Patents

Maximalwahrscheinlichkeitsdekodierung mit Störungsdetektion für Frequenzsprungsysteme mit kodierter Modulation

Info

Publication number
DE69027018T2
DE69027018T2 DE69027018T DE69027018T DE69027018T2 DE 69027018 T2 DE69027018 T2 DE 69027018T2 DE 69027018 T DE69027018 T DE 69027018T DE 69027018 T DE69027018 T DE 69027018T DE 69027018 T2 DE69027018 T2 DE 69027018T2
Authority
DE
Germany
Prior art keywords
frequency hopping
interference detection
coded modulation
maximum probability
probability decoding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69027018T
Other languages
English (en)
Other versions
DE69027018D1 (de
Inventor
Adel Abdel Moneim Saleh
Lee-Fang Wei
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
AT&T Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AT&T Corp filed Critical AT&T Corp
Publication of DE69027018D1 publication Critical patent/DE69027018D1/de
Application granted granted Critical
Publication of DE69027018T2 publication Critical patent/DE69027018T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/715—Interference-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/186—Phase-modulated carrier systems, i.e. using phase-shift keying in which the information is carried by both the individual signal points and the subset to which the individual signal points belong, e.g. coset coding or related schemes
DE69027018T 1990-01-02 1990-11-28 Maximalwahrscheinlichkeitsdekodierung mit Störungsdetektion für Frequenzsprungsysteme mit kodierter Modulation Expired - Fee Related DE69027018T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/459,880 US5048057A (en) 1990-01-02 1990-01-02 Wireless local area network

Publications (2)

Publication Number Publication Date
DE69027018D1 DE69027018D1 (de) 1996-06-20
DE69027018T2 true DE69027018T2 (de) 1996-11-21

Family

ID=23826499

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69027018T Expired - Fee Related DE69027018T2 (de) 1990-01-02 1990-11-28 Maximalwahrscheinlichkeitsdekodierung mit Störungsdetektion für Frequenzsprungsysteme mit kodierter Modulation

Country Status (4)

Country Link
US (1) US5048057A (de)
EP (1) EP0439925B1 (de)
JP (1) JP2862682B2 (de)
DE (1) DE69027018T2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10029308A1 (de) * 2000-06-14 2001-12-20 Rohde & Schwarz System zur Datenübertragung nach dem Frequenzsprungverfahren
US7248620B2 (en) 2000-06-14 2007-07-24 Rohde & Schwarz Gmbh & Co. Kg System for treatment data by the frequency hopping method

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100041349A1 (en) * 1989-08-03 2010-02-18 Broadcom Corporation Remote radio data communication system with data rate switching
GB9010637D0 (en) * 1990-05-11 1990-07-04 Secr Defence A high frequency multichannel diversity differential phase shift(dpsk)communications system
US5283780A (en) * 1990-10-18 1994-02-01 Stanford Telecommunications, Inc. Digital audio broadcasting system
US5355520A (en) * 1990-11-30 1994-10-11 Motorola, Inc. In-building microwave communication system permits frequency refuse with external point-to-point microwave systems
US5278844A (en) * 1991-04-11 1994-01-11 Usa Digital Radio Method and apparatus for digital audio broadcasting and reception
US5301209A (en) * 1991-10-09 1994-04-05 At&T Bell Laboratories Multidimensional trellis-coded modulation for fading channels
US5550809A (en) * 1992-04-10 1996-08-27 Ericsson Ge Mobile Communications, Inc. Multiple access coding using bent sequences for mobile radio communications
US5353352A (en) * 1992-04-10 1994-10-04 Ericsson Ge Mobile Communications Inc. Multiple access coding for radio communications
US5471503A (en) * 1992-12-29 1995-11-28 Apple Computer, Inc. Scanning method for receiving a transmission in a communication system with slow frequency hopping and coding
US5452319A (en) * 1993-06-17 1995-09-19 Itt Corporation Method and system for increasing the reliability of multiple frequency communication systems
WO1995001020A1 (en) * 1993-06-25 1995-01-05 Xircom, Incorporated Virtual carrier detection for wireless local area network with distributed control
US5404374A (en) * 1993-07-12 1995-04-04 Apple Computer, Inc. Method and apparatus for transmitting and receiving encoded data using multiple frequency coding
US5809083A (en) * 1994-11-23 1998-09-15 At&T Wireless Services, Inc. Differentially encoded pilot word system and method for wireless transmissions of digital data
US5700271A (en) 1995-10-20 1997-12-23 United States Surgical Corporation Apparatus for applying surgical clips
US5818830A (en) * 1995-12-29 1998-10-06 Lsi Logic Corporation Method and apparatus for increasing the effective bandwidth of a digital wireless network
US5761259A (en) * 1996-05-24 1998-06-02 International Business Machines Corporation Apparatus, method and article of manufacture for carrier frequency compensation in a FM radio
US6006075A (en) * 1996-06-18 1999-12-21 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for transmitting communication signals using transmission space diversity and frequency diversity
US6581179B1 (en) * 1996-06-25 2003-06-17 Ericsson Inc. Methods for generating side information in the presence of time-selective fading
US5832044A (en) * 1996-09-27 1998-11-03 Elvino S. Sousa Transmitter antenna diversity and fading-resistant modulation for wireless communication systems
US5933421A (en) 1997-02-06 1999-08-03 At&T Wireless Services Inc. Method for frequency division duplex communications
US6501771B2 (en) 1997-02-11 2002-12-31 At&T Wireless Services, Inc. Delay compensation
US5923700A (en) * 1997-02-24 1999-07-13 At & T Wireless Adaptive weight update method and system for a discrete multitone spread spectrum communications system
US6002664A (en) * 1997-02-24 1999-12-14 At&T Wireless Services Inc. Method to gain access to a base station in a discrete multitone spread spectrum communications system
US6584144B2 (en) * 1997-02-24 2003-06-24 At&T Wireless Services, Inc. Vertical adaptive antenna array for a discrete multitone spread spectrum communications system
US6408016B1 (en) 1997-02-24 2002-06-18 At&T Wireless Services, Inc. Adaptive weight update method and system for a discrete multitone spread spectrum communications system
US6359923B1 (en) * 1997-12-18 2002-03-19 At&T Wireless Services, Inc. Highly bandwidth efficient communications
JPH11120487A (ja) 1997-10-21 1999-04-30 Toyota Motor Corp 移動体端末装置、情報提供装置、情報提供システム、情報提供方法及び移動体端末装置のためのプログラムを記録した媒体
US6128330A (en) 1998-11-24 2000-10-03 Linex Technology, Inc. Efficient shadow reduction antenna system for spread spectrum
GB2350750B (en) 1999-06-01 2003-08-13 Motorola Ireland Ltd Interference in a cellular communications system
US6882680B1 (en) * 2000-06-09 2005-04-19 Umbrella Capital, Llc Quadrature phase modulation receiver for spread spectrum communications system
US6874115B1 (en) * 2000-08-04 2005-03-29 Agere Systems Inc. Multi-mode decoding for digital audio broadcasting and other applications
US6983243B1 (en) * 2000-10-27 2006-01-03 Lucent Technologies Inc. Methods and apparatus for wireless transmission using multiple description coding
US11204729B2 (en) 2000-11-01 2021-12-21 Flexiworld Technologies, Inc. Internet based digital content services for pervasively providing protected digital content to smart devices based on having subscribed to the digital content service
US10915296B2 (en) 2000-11-01 2021-02-09 Flexiworld Technologies, Inc. Information apparatus that includes a touch sensitive screen interface for managing or replying to e-mails
US10860290B2 (en) 2000-11-01 2020-12-08 Flexiworld Technologies, Inc. Mobile information apparatuses that include a digital camera, a touch sensitive screen interface, support for voice activated commands, and a wireless communication chip or chipset supporting IEEE 802.11
US20020059415A1 (en) 2000-11-01 2002-05-16 Chang William Ho Manager for device-to-device pervasive digital output
AU2002226948A1 (en) * 2000-11-20 2002-06-03 Flexiworld Technologies, Inc. Tobile and pervasive output components
US20020097408A1 (en) 2001-01-19 2002-07-25 Chang William Ho Output device for universal data output
US7412294B1 (en) * 2001-12-21 2008-08-12 Woolfork C Earl Wireless digital audio system
US7039417B2 (en) * 2003-09-25 2006-05-02 Lenovo Pte Ltd Apparatus, system, and method for mitigating access point data rate degradation
US6999498B2 (en) * 2003-04-24 2006-02-14 Bae Systems Information And Electronic Systems Integration Inc. Multiuser detection aided multiple access differential frequency-hopped spread spectrum
EP1741246A1 (de) * 2004-04-16 2007-01-10 Koninklijke Philips Electronics N.V. Verfahren und einrichtung zum vermindern von störungen unter verwendung redundanter übertragungen in separaten ism-bändern
US20060041818A1 (en) * 2004-08-23 2006-02-23 Texas Instruments Inc Method and apparatus for mitigating fading in a communication system
US8542638B2 (en) * 2006-04-20 2013-09-24 Microchip Technology Incorporated System and method for interference identification and frequency allocation
US9444670B2 (en) * 2013-10-21 2016-09-13 Electronics And Telecommunications Research Instit Method and apparatus for transmitting and receiving signal based on interference
CN106788887B (zh) * 2016-12-09 2019-09-17 天津大学 一种基于多路分布式透明硬判决接收的软译码方法
US11621726B1 (en) * 2021-09-10 2023-04-04 Huawei Technologies Co., Ltd. Multidimensional multilevel coding encoder and decoder
US11728843B2 (en) * 2021-10-19 2023-08-15 L3Harris Technologies, Inc. Frequency hopping interference detection using decoder codeword metrics

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3423729A (en) * 1964-06-25 1969-01-21 Westinghouse Electric Corp Anti-fading error correction system
US3605019A (en) * 1969-01-15 1971-09-14 Ibm Selective fading transformer
JPS62152239A (ja) * 1985-12-26 1987-07-07 Matsushita Electric Ind Co Ltd デジタル信号伝送装置
JPS6350218A (ja) * 1986-08-20 1988-03-03 Canon Inc デ−タ伝送方式
US4881241A (en) * 1988-02-24 1989-11-14 Centre National D'etudes Des Telecommunications Method and installation for digital communication, particularly between and toward moving vehicles
US5056112A (en) * 1989-07-28 1991-10-08 At&T Bell Laboratories Interleaving in coded modulation for mobile radio
FR2658016B1 (fr) * 1990-02-06 1994-01-21 Etat Francais Cnet Procede de diffusion de donnees numeriques, notamment pour la radiodiffusion a haut debit vers des mobiles, a entrelacement temps-frequence et demodulation coherente, et recepteur correspondant.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10029308A1 (de) * 2000-06-14 2001-12-20 Rohde & Schwarz System zur Datenübertragung nach dem Frequenzsprungverfahren
US7248620B2 (en) 2000-06-14 2007-07-24 Rohde & Schwarz Gmbh & Co. Kg System for treatment data by the frequency hopping method

Also Published As

Publication number Publication date
EP0439925B1 (de) 1996-05-15
JP2862682B2 (ja) 1999-03-03
DE69027018D1 (de) 1996-06-20
EP0439925A3 (en) 1993-01-20
EP0439925A2 (de) 1991-08-07
JPH04211527A (ja) 1992-08-03
US5048057A (en) 1991-09-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee