CA2176401A1 - A high-data-rate wireless local-area network - Google Patents

A high-data-rate wireless local-area network

Info

Publication number
CA2176401A1
CA2176401A1 CA002176401A CA2176401A CA2176401A1 CA 2176401 A1 CA2176401 A1 CA 2176401A1 CA 002176401 A CA002176401 A CA 002176401A CA 2176401 A CA2176401 A CA 2176401A CA 2176401 A1 CA2176401 A1 CA 2176401A1
Authority
CA
Canada
Prior art keywords
data
area network
wireless local
walsh
spectrum modulation
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.)
Granted
Application number
CA002176401A
Other languages
French (fr)
Other versions
CA2176401C (en
Inventor
John H. Cafarella
Jeffrey H. Fischer
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.)
Symbol Technologies LLC
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26893503&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2176401(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US08/369,778 external-priority patent/US5809060A/en
Application filed by Individual filed Critical Individual
Publication of CA2176401A1 publication Critical patent/CA2176401A1/en
Application granted granted Critical
Publication of CA2176401C publication Critical patent/CA2176401C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • 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
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0048—Walsh
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H04J13/102—Combining codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709709—Methods of preventing interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Abstract

An apparatus and method for communicating data between at least two data devices, suitable for use as a wireless local-area network, that provides robust data via a radio channel corrupted by multipath interference, particularly at high data rates. A preferred embodiment of the invention represents data as a sequence of Walsh-function waveforms (66) encoded by pseudo-noise direct-sequence spread-spectrum modulation (70). Walsh function encoding of the data provides a long symbol duration, thereby allowing the spread spectrum modulation to provide processing gain sufficient to substantially overcome multipath interference, while providing a high data rate.
CA002176401A 1994-02-17 1995-02-03 A high-data-rate wireless local-area network Expired - Lifetime CA2176401C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US19813894A 1994-02-17 1994-02-17
US198,138 1994-02-17
US369,778 1994-12-30
US08/369,778 US5809060A (en) 1994-02-17 1994-12-30 High-data-rate wireless local-area network
PCT/US1995/001421 WO1995022859A1 (en) 1994-02-17 1995-02-03 A high-data-rate wireless local-area network

Publications (2)

Publication Number Publication Date
CA2176401A1 true CA2176401A1 (en) 1995-08-24
CA2176401C CA2176401C (en) 2003-07-08

Family

ID=26893503

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002176401A Expired - Lifetime CA2176401C (en) 1994-02-17 1995-02-03 A high-data-rate wireless local-area network

Country Status (8)

Country Link
US (2) US6075812A (en)
EP (1) EP0745290A4 (en)
JP (3) JP3406319B2 (en)
CN (2) CN100483958C (en)
CA (1) CA2176401C (en)
MX (1) MX9603336A (en)
SG (1) SG52170A1 (en)
WO (1) WO1995022859A1 (en)

Families Citing this family (169)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2921446B2 (en) * 1995-08-30 1999-07-19 日本電気株式会社 CSK communication device for spread spectrum communication and communication method
US6173007B1 (en) * 1997-01-15 2001-01-09 Qualcomm Inc. High-data-rate supplemental channel for CDMA telecommunications system
US5982807A (en) * 1997-03-17 1999-11-09 Harris Corporation High data rate spread spectrum transceiver and associated methods
US5938787A (en) * 1997-03-27 1999-08-17 Ericsson Inc. Communications systems and methods employing code rate partitioning with nonorthogonal modulation
AU755260B2 (en) * 1997-06-23 2002-12-05 Proxim, Inc. Wireless communications system for transmitting and receiving data with increased data rates and robustness
US6680928B1 (en) * 1997-07-22 2004-01-20 Ericsson Inc. Communications system and method for multi-carrier orthogonal coding
WO1999037047A1 (en) 1998-01-16 1999-07-22 Symbol Technologies, Inc. INFRASTRUCTURE FOR WIRELESS LANSs
US5955992A (en) * 1998-02-12 1999-09-21 Shattil; Steve J. Frequency-shifted feedback cavity used as a phased array antenna controller and carrier interference multiple access spread-spectrum transmitter
US7430257B1 (en) * 1998-02-12 2008-09-30 Lot 41 Acquisition Foundation, Llc Multicarrier sub-layer for direct sequence channel and multiple-access coding
WO1999041867A1 (en) * 1998-02-17 1999-08-19 Root Inc. Radio communication equipment and communication method
FR2776146B1 (en) * 1998-03-13 2000-08-04 Mitsubishi Electric Inf Tech METHOD FOR DEMODULATING REPRESENTATIVE SIGNALS OF SEQUENCES TRANSMITTED IN A COMMUNICATION SYSTEM
US6226318B1 (en) 1998-03-31 2001-05-01 Zenith Electronics Corporation Detection of code vectors in single frequency, multiple transmitter networks
US6396866B1 (en) * 1998-05-01 2002-05-28 Trw Inc. Symmetric chirp communications acquisition method and apparatus
KR100381012B1 (en) 1998-05-04 2003-08-19 한국전자통신연구원 Random connection device for reverse common channel in cdma scheme and method therefor
US6470401B1 (en) * 1999-03-18 2002-10-22 C4Si, Inc. School computer system having simplified computer devices for classroom distribution
US6724829B1 (en) * 1999-03-18 2004-04-20 Conexant Systems, Inc. Automatic power control in a data transmission system
DE10027216B4 (en) 1999-05-31 2008-10-16 Electronics And Telecommunications Research Institute Apparatus and method for modulating a data message by using Orthogonal Variable Spreading Factor (OVSF) codes in a mobile communication system
FR2795894B1 (en) * 1999-06-29 2001-10-05 Commissariat Energie Atomique MULTI-MAK MODULATION/DEMODULATION TRANSMISSION METHOD, CORRESPONDING TRANSMITTER AND RECEIVER
US6356580B1 (en) * 1999-07-06 2002-03-12 The United States Of America As Represented By The Secretary Of The Air Force Direct sequence spread spectrum using non-antipodal phase shift keying
US6360348B1 (en) * 1999-08-27 2002-03-19 Motorola, Inc. Method and apparatus for coding and decoding data
US6874006B1 (en) * 1999-10-29 2005-03-29 Pentomics, Inc. Apparatus and method for rectangular-to-polar conversion
JP4329192B2 (en) * 1999-11-19 2009-09-09 ソニー株式会社 Wireless communication apparatus, wireless communication system and method thereof
US7173922B2 (en) 2000-03-17 2007-02-06 Symbol Technologies, Inc. Multiple wireless local area networks occupying overlapping physical spaces
US7173923B2 (en) * 2000-03-17 2007-02-06 Symbol Technologies, Inc. Security in multiple wireless local area networks
US6928084B2 (en) 2000-03-28 2005-08-09 At & T Corp. OFDM communication system and method having a reduced peak-to-average power ratio
US6674818B1 (en) 2000-04-17 2004-01-06 Rf Micro Devices, Inc. Reduced complexity decision circuitry
US6693954B1 (en) 2000-04-17 2004-02-17 Rf Micro Devices, Inc. Apparatus and method of early-late symbol tracking for a complementary code keying receiver
US6683905B1 (en) 2000-04-17 2004-01-27 Rf Micro Devices, Inc. Dual-mode receiver
US6912469B1 (en) 2000-05-05 2005-06-28 Kenneth J. Cool Electronic hybridization assay and sequence analysis
AU8043901A (en) * 2000-05-30 2001-12-11 Univ Johns Hopkins Threat identification for mass spectrometer system
US8363744B2 (en) 2001-06-10 2013-01-29 Aloft Media, Llc Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks
US7630721B2 (en) * 2000-06-27 2009-12-08 Ortiz & Associates Consulting, Llc Systems, methods and apparatuses for brokering data between wireless devices and data rendering devices
US9380414B2 (en) 2000-06-27 2016-06-28 Ortiz & Associates Consulting, Llc Systems, methods and apparatuses for brokering data between wireless devices, servers and data rendering devices
US6728324B1 (en) 2000-07-31 2004-04-27 Rf Micro Devices, Inc. Method and apparatus for multipath signal compensation in spread-spectrum communications systems
US6647077B1 (en) 2000-07-31 2003-11-11 Rf Micro Devices, Inc. Multipath parameter estimation in spread-spectrum communications systems
US6700929B1 (en) 2000-07-31 2004-03-02 Rf Micro Devices, Inc. Method and apparatus for multipath parameter estimation in spread-spectrum communications systems
JP4752093B2 (en) * 2000-08-16 2011-08-17 ソニー株式会社 Information processing apparatus and information processing method
EP1312164B1 (en) * 2000-08-25 2008-05-28 STMicroelectronics Asia Pacific Pte Ltd Method for efficient and zero latency filtering in a long impulse response system
EP1202483A1 (en) * 2000-10-27 2002-05-02 Alcatel Correlated spreading sequences for high rate non-coherent communication systems
US8670390B2 (en) 2000-11-22 2014-03-11 Genghiscomm Holdings, LLC Cooperative beam-forming in wireless networks
US6882692B2 (en) * 2000-12-29 2005-04-19 Sharp Laboratories Of America, Inc. Fast transform system for an extended data rate WLAN system
US6882679B2 (en) * 2000-12-29 2005-04-19 Sharp Laboratories Of America, Inc. Extension of wireless local area network communication system to accommodate higher data rates while preserving legacy receiver features
JP2002247119A (en) * 2001-02-20 2002-08-30 Advantest Corp Symbol point estimate device, method, program and recording medium for recording the program and modulation analyzer
US6823224B2 (en) * 2001-02-21 2004-11-23 Freescale Semiconductor, Inc. Data processing system having an on-chip background debug system and method therefor
US8619922B1 (en) 2002-02-04 2013-12-31 Marvell International Ltd. Method and apparatus for acquisition and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise
US7218691B1 (en) 2001-03-05 2007-05-15 Marvell International Ltd. Method and apparatus for estimation of orthogonal frequency division multiplexing symbol timing and carrier frequency offset
US20020176511A1 (en) * 2001-03-16 2002-11-28 Fullerton Larry W. High pulse-rate radio-frequency apparatus and associated methods
JP4572482B2 (en) * 2001-04-11 2010-11-04 株式会社デンソー CDMA wireless communication demodulator
US10425135B2 (en) 2001-04-26 2019-09-24 Genghiscomm Holdings, LLC Coordinated multipoint systems
US10931338B2 (en) 2001-04-26 2021-02-23 Genghiscomm Holdings, LLC Coordinated multipoint systems
US9819449B2 (en) 2002-05-14 2017-11-14 Genghiscomm Holdings, LLC Cooperative subspace demultiplexing in content delivery networks
US9893774B2 (en) 2001-04-26 2018-02-13 Genghiscomm Holdings, LLC Cloud radio access network
US10355720B2 (en) 2001-04-26 2019-07-16 Genghiscomm Holdings, LLC Distributed software-defined radio
US20050008097A1 (en) * 2001-08-17 2005-01-13 Tjhung Tjeng Thiang Coded modulation scheme for a wirelesss communication system and methods thereof
US7095710B2 (en) * 2001-12-21 2006-08-22 Qualcomm Decoding using walsh space information
AU2003228236A1 (en) * 2002-03-01 2003-09-16 Telepulse Technologies Corporation Dynamic time metered delivery
US9628231B2 (en) 2002-05-14 2017-04-18 Genghiscomm Holdings, LLC Spreading and precoding in OFDM
US10142082B1 (en) 2002-05-14 2018-11-27 Genghiscomm Holdings, LLC Pre-coding in OFDM
US10644916B1 (en) 2002-05-14 2020-05-05 Genghiscomm Holdings, LLC Spreading and precoding in OFDM
US10200227B2 (en) 2002-05-14 2019-02-05 Genghiscomm Holdings, LLC Pre-coding in multi-user MIMO
US20040203764A1 (en) * 2002-06-03 2004-10-14 Scott Hrastar Methods and systems for identifying nodes and mapping their locations
US7383577B2 (en) 2002-05-20 2008-06-03 Airdefense, Inc. Method and system for encrypted network management and intrusion detection
US7086089B2 (en) 2002-05-20 2006-08-01 Airdefense, Inc. Systems and methods for network security
US7532895B2 (en) 2002-05-20 2009-05-12 Air Defense, Inc. Systems and methods for adaptive location tracking
US7277404B2 (en) * 2002-05-20 2007-10-02 Airdefense, Inc. System and method for sensing wireless LAN activity
US7058796B2 (en) 2002-05-20 2006-06-06 Airdefense, Inc. Method and system for actively defending a wireless LAN against attacks
US7042852B2 (en) 2002-05-20 2006-05-09 Airdefense, Inc. System and method for wireless LAN dynamic channel change with honeypot trap
US7322044B2 (en) 2002-06-03 2008-01-22 Airdefense, Inc. Systems and methods for automated network policy exception detection and correction
US7106803B1 (en) 2002-06-26 2006-09-12 Marvell International Ltd. Phase shift keying wireless communication apparatus and method
US7203183B2 (en) * 2002-06-26 2007-04-10 International Business Machines Corporation Access point initiated forced roaming based upon bandwidth
US7054396B2 (en) 2002-08-20 2006-05-30 Rf Micro Devices, Inc. Method and apparatus for multipath signal compensation in spread-spectrum communications systems
EP1411738A1 (en) * 2002-10-15 2004-04-21 Lucent Technologies Inc. A telecommunications base station, and a method of detection by a base station of a sequence of data representing a request for call connection from a mobile
US7127000B2 (en) * 2002-10-21 2006-10-24 The Aerospace Corporation Turbo decoding system using NTH root metrics for non-Gaussian communication channels
DE10251322B4 (en) * 2002-11-04 2006-10-26 Advanced Micro Devices, Inc., Sunnyvale Early-late correlation to timing error correction in data communication receivers
KR100470401B1 (en) 2002-12-24 2005-02-05 한국전자통신연구원 A wireless communication system and method using grouping Maximum Lilelihood Detection
WO2004079927A2 (en) 2003-03-03 2004-09-16 Interdigital Technology Corporation Reduced complexity sliding window based equalizer
US7042967B2 (en) * 2003-03-03 2006-05-09 Interdigital Technology Corporation Reduced complexity sliding window based equalizer
CN1305264C (en) * 2003-04-14 2007-03-14 中兴通讯股份有限公司 Device and method for radio local network baseband processing and coding modulation
US7355996B2 (en) * 2004-02-06 2008-04-08 Airdefense, Inc. Systems and methods for adaptive monitoring with bandwidth constraints
US7324804B2 (en) 2003-04-21 2008-01-29 Airdefense, Inc. Systems and methods for dynamic sensor discovery and selection
US7359676B2 (en) 2003-04-21 2008-04-15 Airdefense, Inc. Systems and methods for adaptively scanning for wireless communications
US7522908B2 (en) 2003-04-21 2009-04-21 Airdefense, Inc. Systems and methods for wireless network site survey
US7356074B2 (en) * 2003-05-08 2008-04-08 Rf Micro Devices, Inc. Estimation of multipath channel with sub-chip resolution
CN100397350C (en) * 2003-05-28 2008-06-25 赛宝技术公司 Backup cell controller
US20050157690A1 (en) * 2003-05-28 2005-07-21 James Frank Wireless network cell controller
US20050059406A1 (en) * 2003-09-17 2005-03-17 Trapeze Networks, Inc. Wireless LAN measurement feedback
JP4346465B2 (en) * 2003-09-29 2009-10-21 三洋電機株式会社 Receiving method and apparatus
JP2005277539A (en) 2004-03-23 2005-10-06 Sanyo Electric Co Ltd Receiving method and receiver
US7761769B1 (en) * 2004-03-26 2010-07-20 Cypress Semiconductor Corporation Method and apparatus for using valid bits for erasure correction
US11381285B1 (en) 2004-08-02 2022-07-05 Genghiscomm Holdings, LLC Transmit pre-coding
US11184037B1 (en) 2004-08-02 2021-11-23 Genghiscomm Holdings, LLC Demodulating and decoding carrier interferometry signals
US11552737B1 (en) 2004-08-02 2023-01-10 Genghiscomm Holdings, LLC Cooperative MIMO
US8196199B2 (en) 2004-10-19 2012-06-05 Airdefense, Inc. Personal wireless monitoring agent
ES2442855T3 (en) 2004-12-23 2014-02-13 Electronics And Telecommunications Research Institute Apparatus for transmitting and receiving data to provide high speed data communication and method for doing so
KR100643150B1 (en) * 2005-01-05 2006-11-10 오소트론 주식회사 Method and Apparatus for Differentially Orthogonal Modulation by Using Repetition Time Period of Chirp Signal
US7523364B2 (en) * 2005-02-09 2009-04-21 International Business Machines Corporation Double DRAM bit steering for multiple error corrections
US7529925B2 (en) 2005-03-15 2009-05-05 Trapeze Networks, Inc. System and method for distributing keys in a wireless network
US7864832B2 (en) * 2005-05-06 2011-01-04 Samsung Electronics Co., Ltd. Multi-code correlation architecture for use in software-defined radio systems
USRE47633E1 (en) 2005-06-22 2019-10-01 Odyssey Wireless Inc. Systems/methods of conducting a financial transaction using a smartphone
US8233554B2 (en) 2010-03-29 2012-07-31 Eices Research, Inc. Increased capacity communications for OFDM-based wireless communications systems/methods/devices
US8670493B2 (en) * 2005-06-22 2014-03-11 Eices Research, Inc. Systems and/or methods of increased privacy wireless communications
US8638762B2 (en) 2005-10-13 2014-01-28 Trapeze Networks, Inc. System and method for network integrity
US7573859B2 (en) 2005-10-13 2009-08-11 Trapeze Networks, Inc. System and method for remote monitoring in a wireless network
WO2007044986A2 (en) 2005-10-13 2007-04-19 Trapeze Networks, Inc. System and method for remote monitoring in a wireless network
US7724703B2 (en) 2005-10-13 2010-05-25 Belden, Inc. System and method for wireless network monitoring
US7551619B2 (en) 2005-10-13 2009-06-23 Trapeze Networks, Inc. Identity-based networking
US8250587B2 (en) 2005-10-27 2012-08-21 Trapeze Networks, Inc. Non-persistent and persistent information setting method and system for inter-process communication
US7577424B2 (en) 2005-12-19 2009-08-18 Airdefense, Inc. Systems and methods for wireless vulnerability analysis
US7602838B2 (en) * 2005-12-22 2009-10-13 Telefonaktiebolaget Lm Ericsson (Publ) Linear turbo equalization using despread values
US7715800B2 (en) 2006-01-13 2010-05-11 Airdefense, Inc. Systems and methods for wireless intrusion detection using spectral analysis
US7971251B2 (en) 2006-03-17 2011-06-28 Airdefense, Inc. Systems and methods for wireless security using distributed collaboration of wireless clients
US7558266B2 (en) 2006-05-03 2009-07-07 Trapeze Networks, Inc. System and method for restricting network access using forwarding databases
US8966018B2 (en) 2006-05-19 2015-02-24 Trapeze Networks, Inc. Automated network device configuration and network deployment
US8818322B2 (en) 2006-06-09 2014-08-26 Trapeze Networks, Inc. Untethered access point mesh system and method
US9191799B2 (en) 2006-06-09 2015-11-17 Juniper Networks, Inc. Sharing data between wireless switches system and method
US7912982B2 (en) 2006-06-09 2011-03-22 Trapeze Networks, Inc. Wireless routing selection system and method
US9258702B2 (en) 2006-06-09 2016-02-09 Trapeze Networks, Inc. AP-local dynamic switching
US7844298B2 (en) 2006-06-12 2010-11-30 Belden Inc. Tuned directional antennas
US7970013B2 (en) 2006-06-16 2011-06-28 Airdefense, Inc. Systems and methods for wireless network content filtering
US20080025438A1 (en) * 2006-07-28 2008-01-31 Utstarcom, Inc. Method and apparatus for demodulating saturated differential psk signals
US7724704B2 (en) 2006-07-17 2010-05-25 Beiden Inc. Wireless VLAN system and method
US8281392B2 (en) 2006-08-11 2012-10-02 Airdefense, Inc. Methods and systems for wired equivalent privacy and Wi-Fi protected access protection
US8340110B2 (en) 2006-09-15 2012-12-25 Trapeze Networks, Inc. Quality of service provisioning for wireless networks
US8072952B2 (en) 2006-10-16 2011-12-06 Juniper Networks, Inc. Load balancing
US7933354B2 (en) * 2006-11-22 2011-04-26 Semtech Corporation Encoding and decoding architecture and method for pipelining encoded data or pipelining with a look-ahead strategy
US7873061B2 (en) 2006-12-28 2011-01-18 Trapeze Networks, Inc. System and method for aggregation and queuing in a wireless network
WO2008083339A2 (en) 2006-12-28 2008-07-10 Trapeze Networks, Inc. Application-aware wireless network system and method
US8050362B2 (en) * 2007-05-25 2011-11-01 Amicus Wireless Technology Ltd. Soft-bit de-mapping device and method of generating soft bits for decoding
WO2008157679A1 (en) * 2007-06-19 2008-12-24 Raytheon Company Methods and apparatus for receiver having fast walsh transform
US8902904B2 (en) 2007-09-07 2014-12-02 Trapeze Networks, Inc. Network assignment based on priority
US8509128B2 (en) 2007-09-18 2013-08-13 Trapeze Networks, Inc. High level instruction convergence function
US20090116422A1 (en) * 2007-11-02 2009-05-07 Chia-Chin Chong Method and system for opportunistic hybrid relay selection scheme for downlink transmission
US8238942B2 (en) 2007-11-21 2012-08-07 Trapeze Networks, Inc. Wireless station location detection
US8582705B2 (en) * 2007-12-10 2013-11-12 Ciena Corporation Serializer-deserializer circuit with multi-format and multi-data rate capability
US8150357B2 (en) 2008-03-28 2012-04-03 Trapeze Networks, Inc. Smoothing filter for irregular update intervals
US8474023B2 (en) 2008-05-30 2013-06-25 Juniper Networks, Inc. Proactive credential caching
US9374746B1 (en) 2008-07-07 2016-06-21 Odyssey Wireless, Inc. Systems/methods of spatial multiplexing
US8978105B2 (en) 2008-07-25 2015-03-10 Trapeze Networks, Inc. Affirming network relationships and resource access via related networks
US8238298B2 (en) 2008-08-29 2012-08-07 Trapeze Networks, Inc. Picking an optimal channel for an access point in a wireless network
US9119165B2 (en) 2009-09-10 2015-08-25 Nextnav, Llc Coding in a wide area positioning system (WAPS)
US7768448B2 (en) * 2008-09-18 2010-08-03 Raytheon Company Enhanced line-of-sight (LOS) processing for all-digital LOS processor
US7773027B2 (en) * 2008-09-18 2010-08-10 Raytheon Company Enhanced countermeasures for all-digital line-of-sight (LOS) processor
US7760131B2 (en) * 2008-09-18 2010-07-20 Raytheon Company All-digital line-of-sight (LOS) processor architecture
US7764222B2 (en) * 2008-09-18 2010-07-27 Raytheon Company Adaptive pulse detection for all-digital line-of-sight (LOS) processor
US7948332B2 (en) * 2008-09-30 2011-05-24 Raytheon Company N-channel multiplexer
WO2011056106A1 (en) * 2009-11-06 2011-05-12 Telefonaktiebolaget L M Ericsson (Publ) Processing nodes and methods of estimating interference in a radio telecommunication network
US9806790B2 (en) 2010-03-29 2017-10-31 Odyssey Wireless, Inc. Systems/methods of spectrally efficient communications
WO2011145027A1 (en) * 2010-05-21 2011-11-24 Koninklijke Philips Electronics N.V. Method and device for forwarding data packets
US8391334B1 (en) 2010-09-27 2013-03-05 L-3 Communications Corp Communications reliability in a hub-spoke communications system
KR101026141B1 (en) 2010-11-18 2011-04-06 삼성탈레스 주식회사 Receiving apparatus and method of frequency hopping spread spectru/time division mutiple access performing partial cross correlation during cyclic code shift keying demodulation
US8542836B2 (en) 2010-12-01 2013-09-24 Juniper Networks, Inc. System, apparatus and methods for highly scalable continuous roaming within a wireless network
US9645249B2 (en) 2011-06-28 2017-05-09 Nextnav, Llc Systems and methods for pseudo-random coding
CN102394671B (en) * 2011-11-15 2013-10-09 哈尔滨工业大学 QPSK modulation and mutual complementing code based spread spectrum communication (SSC) method without multipath and multi-access interference
US9270396B2 (en) * 2013-04-11 2016-02-23 Tellabs Operations, Inc. Method and apparatus for providing timing analysis for packet streams over packet carriers
US9054652B2 (en) * 2013-10-02 2015-06-09 Nokia Solutions And Networks Oy Using fractional delay computations to improve intermodulation performance
US9191047B2 (en) * 2014-01-15 2015-11-17 Mitsubishi Electric Research Laboratories, Inc. Detecting narrow band interference in wireless networks using spectral analysis
US10389477B2 (en) 2015-03-15 2019-08-20 Qualcomm Incorporated Devices and methods for facilitating a non-orthogonal underlay in wireless communications systems
US10270488B2 (en) * 2016-12-16 2019-04-23 Raytheon Company Binary high-power modulator
US10637705B1 (en) 2017-05-25 2020-04-28 Genghiscomm Holdings, LLC Peak-to-average-power reduction for OFDM multiple access
US10243773B1 (en) 2017-06-30 2019-03-26 Genghiscomm Holdings, LLC Efficient peak-to-average-power reduction for OFDM and MIMO-OFDM
CN109088840B (en) * 2017-06-13 2023-10-20 华为技术有限公司 Information transmission method and device
EP3741008B1 (en) * 2018-01-21 2023-08-02 Infinidome Ltd. Phased-array anti-jamming device and method
US10707913B2 (en) * 2018-09-04 2020-07-07 Raytheon Company Composable transceiver using low bit count inputs and outputs
CN113454964A (en) 2019-01-25 2021-09-28 珍吉斯科姆控股有限责任公司 Orthogonal and non-orthogonal multiple access
US11343823B2 (en) 2020-08-16 2022-05-24 Tybalt, Llc Orthogonal multiple access and non-orthogonal multiple access
US11917604B2 (en) 2019-01-25 2024-02-27 Tybalt, Llc Orthogonal multiple access and non-orthogonal multiple access
WO2020242898A1 (en) 2019-05-26 2020-12-03 Genghiscomm Holdings, LLC Non-orthogonal multiple access
US11575777B2 (en) 2019-05-27 2023-02-07 Massachusetts Institute Of Technology Adaptive causal network coding with feedback
US11184203B2 (en) * 2019-12-12 2021-11-23 Maxim Integrated Products, Inc. Systems and methods for identifying polarization/quadrature channels in dual-polarization coherent optical transmission

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176316A (en) 1953-03-30 1979-11-27 International Telephone & Telegraph Corp. Secure single sideband communication system using modulated noise subcarrier
CH622661B (en) 1978-11-30 Ebauches Bettlach Sa DEVICE FOR FIXING A WATCHMAKING DIAL ON THE PLATE OF A WATCH MOVEMENT.
US4730340A (en) 1980-10-31 1988-03-08 Harris Corp. Programmable time invariant coherent spread symbol correlator
US4494238A (en) * 1982-06-30 1985-01-15 Motorola, Inc. Multiple channel data link system
US4550414A (en) * 1983-04-12 1985-10-29 Charles Stark Draper Laboratory, Inc. Spread spectrum adaptive code tracker
US4707839A (en) 1983-09-26 1987-11-17 Harris Corporation Spread spectrum correlator for recovering CCSK data from a PN spread MSK waveform
US4644523A (en) * 1984-03-23 1987-02-17 Sangamo Weston, Inc. System for improving signal-to-noise ratio in a direct sequence spread spectrum signal receiver
US4562415A (en) 1984-06-22 1985-12-31 Motorola, Inc. Universal ultra-precision PSK modulator with time multiplexed modes of varying modulation types
JPH0693670B2 (en) * 1984-12-29 1994-11-16 京セラ株式会社 Spread spectrum communication system
US4635221A (en) * 1985-01-18 1987-01-06 Allied Corporation Frequency multiplexed convolver communication system
US5001723A (en) * 1985-11-05 1991-03-19 Allied-Signal Inc. Sinusoidal M-ary orthogonal keyed decoding
US4901307A (en) 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
US4894842A (en) * 1987-10-15 1990-01-16 The Charles Stark Draper Laboratory, Inc. Precorrelation digital spread spectrum receiver
US4872182A (en) * 1988-03-08 1989-10-03 Harris Corporation Frequency management system for use in multistation H.F. communication network
FR2629931B1 (en) * 1988-04-08 1991-01-25 Lmt Radio Professionelle ASYNCHRONOUS DIGITAL CORRELATOR AND DEMODULATORS COMPRISING SUCH A CORRELATOR
US5109390A (en) 1989-11-07 1992-04-28 Qualcomm Incorporated Diversity receiver in a cdma cellular telephone system
US5101501A (en) 1989-11-07 1992-03-31 Qualcomm Incorporated Method and system for providing a soft handoff in communications in a cdma cellular telephone system
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5511073A (en) * 1990-06-25 1996-04-23 Qualcomm Incorporated Method and apparatus for the formatting of data for transmission
US5151919A (en) 1990-12-17 1992-09-29 Ericsson-Ge Mobile Communications Holding Inc. Cdma subtractive demodulation
US5218619A (en) 1990-12-17 1993-06-08 Ericsson Ge Mobile Communications Holding, Inc. CDMA subtractive demodulation
US5204876A (en) 1991-03-13 1993-04-20 Motorola, Inc. Method and apparatus for providing high data rate traffic channels in a spread spectrum communication system
EP0533887B1 (en) * 1991-03-13 1998-10-21 Motorola, Inc. Method and apparatus for accommodating a variable number of communication channels in a spread spectrum communication system
US5357454A (en) 1991-07-25 1994-10-18 Ericsson Ge Mobile Communications Holding, Inc. Fast walsh transform processor
US5187675A (en) 1991-09-18 1993-02-16 Ericsson-Ge Mobile Communications Holding Inc. Maximum search circuit
IL118832A (en) * 1992-01-16 1998-03-10 Qualcomm Inc Method and apparatus for combining data for transmission and using excess capacity
US5555268A (en) * 1994-01-24 1996-09-10 Fattouche; Michel Multicode direct sequence spread spectrum
US5353352A (en) 1992-04-10 1994-10-04 Ericsson Ge Mobile Communications Inc. Multiple access coding for radio communications
JP3274885B2 (en) 1992-06-20 2002-04-15 功芳 畔柳 Spread spectrum communication method
US5297161A (en) * 1992-06-29 1994-03-22 Motorola Inc. Method and apparatus for power estimation in an orthogonal coded communication system
US5311544A (en) * 1992-11-19 1994-05-10 Samsung Electronics Co., Ltd. Receiver of a direct sequence spread spectrum system
US5414728A (en) * 1993-11-01 1995-05-09 Qualcomm Incorporated Method and apparatus for bifurcating signal transmission over in-phase and quadrature phase spread spectrum communication channels
US5414730A (en) * 1993-12-21 1995-05-09 Unisys Corporation Asynchronous samples data demodulation system

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