DE69909596D1 - Flexibler gleitender korrelator für direktsequenzspreizspektrumsysteme - Google Patents

Flexibler gleitender korrelator für direktsequenzspreizspektrumsysteme

Info

Publication number
DE69909596D1
DE69909596D1 DE69909596T DE69909596T DE69909596D1 DE 69909596 D1 DE69909596 D1 DE 69909596D1 DE 69909596 T DE69909596 T DE 69909596T DE 69909596 T DE69909596 T DE 69909596T DE 69909596 D1 DE69909596 D1 DE 69909596D1
Authority
DE
Germany
Prior art keywords
direct sequence
spectrum systems
sequence spreading
flexible sliding
sliding correlator
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
DE69909596T
Other languages
English (en)
Other versions
DE69909596T2 (de
Inventor
Essam Sourour
Greg Bottomley
David Barrow
Rajaram Ramesh
V Roberts
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.)
Ericsson Inc
Original Assignee
Ericsson Inc
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 Ericsson Inc filed Critical Ericsson Inc
Application granted granted Critical
Publication of DE69909596D1 publication Critical patent/DE69909596D1/de
Publication of DE69909596T2 publication Critical patent/DE69909596T2/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
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • H04B1/70752—Partial correlation
    • 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
    • H04B1/709—Correlator structure
    • H04B1/7095—Sliding correlator type
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70758—Multimode search, i.e. using multiple search strategies
    • 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
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • 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
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • 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
    • H04B2201/70707—Efficiency-related aspects
    • H04B2201/7071—Efficiency-related aspects with dynamic control of receiver resources
    • H04B2201/70711—Efficiency-related aspects with dynamic control of receiver resources with modular structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
DE69909596T 1998-02-17 1999-02-10 Flexibler gleitender korrelator für direktsequenzspreizspektrumsysteme Expired - Fee Related DE69909596T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/024,120 US6363105B1 (en) 1998-02-17 1998-02-17 Flexible sliding correlator for direct sequence spread spectrum systems
US24120 1998-02-17
PCT/US1999/001869 WO1999041846A1 (en) 1998-02-17 1999-02-10 Flexible sliding correlator for direct sequence spread spectrum systems

Publications (2)

Publication Number Publication Date
DE69909596D1 true DE69909596D1 (de) 2003-08-21
DE69909596T2 DE69909596T2 (de) 2004-04-15

Family

ID=21818967

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69909596T Expired - Fee Related DE69909596T2 (de) 1998-02-17 1999-02-10 Flexibler gleitender korrelator für direktsequenzspreizspektrumsysteme

Country Status (8)

Country Link
US (2) US6363105B1 (de)
EP (1) EP1057280B1 (de)
JP (1) JP2002503908A (de)
KR (1) KR20010034503A (de)
CN (1) CN1291383A (de)
AU (1) AU2566599A (de)
DE (1) DE69909596T2 (de)
WO (1) WO1999041846A1 (de)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19832850A1 (de) * 1998-07-21 2000-02-10 Siemens Ag Akquisitionsverfahren und Vorrichtung zur Durchführung des Verfahrens
JP3695732B2 (ja) * 1998-09-02 2005-09-14 富士通株式会社 Ｃｄｍａ受信装置のサーチ装置
US6363104B1 (en) * 1998-10-02 2002-03-26 Ericsson Inc. Method and apparatus for interference cancellation in a rake receiver
JP2000115026A (ja) * 1998-10-06 2000-04-21 Asahi Chem Ind Co Ltd スペクトラム拡散信号処理装置及びスペクトラム拡散通信システム
US6128330A (en) 1998-11-24 2000-10-03 Linex Technology, Inc. Efficient shadow reduction antenna system for spread spectrum
EP2296288B1 (de) 1998-12-14 2012-10-17 Interdigital Technology Corporation Direktzugriffskanal-Präambelerkennung
JP3323453B2 (ja) * 1999-02-09 2002-09-09 松下電器産業株式会社 Ｃｄｍａ受信装置及びｃｄｍａ受信方法
JP3937380B2 (ja) * 1999-12-14 2007-06-27 富士通株式会社 パスサーチ回路
US6480529B1 (en) * 1999-12-21 2002-11-12 Qualcomm, Incorporated Programmable matched filter searcher for multiple pilot searching
EP1189357A1 (de) * 2000-09-19 2002-03-20 Lucent Technologies Inc. Segmentierte Korrelatorarchitektur zur Signal-erkennung in Schwundkanälen
US6771688B1 (en) 2000-09-19 2004-08-03 Lucent Technologies Inc. Segmented architecture for multiple sequence detection and identification in fading channels
US7113538B1 (en) * 2000-11-01 2006-09-26 Nortel Networks Limited Time diversity searcher and scheduling method
GB0028392D0 (en) * 2000-11-22 2001-01-03 Koninkl Philips Electronics Nv A rake receiver
JP3695316B2 (ja) * 2000-11-24 2005-09-14 株式会社日本自動車部品総合研究所 スペクトラム拡散受信機の相関検出器
GB2369531B (en) * 2000-11-27 2004-06-16 Ericsson Telefon Ab L M Mobile communications device
AU2002217057A1 (en) * 2000-11-27 2002-06-03 Telefonaktiebolaget Lm Ericsson (Publ) Code synchronization in a mobile communication device
DE60123938T2 (de) * 2001-07-06 2007-07-05 Ericsson Ab Verfahren zur Überwachung eines redundanten Senders
JP2003092578A (ja) * 2001-09-18 2003-03-28 Fujitsu Ltd 管理装置、処理装置、装置、およびプログラム
US7738533B2 (en) * 2002-01-07 2010-06-15 Qualcomm Incorporated Multiplexed CDMA and GPS searching
WO2004019510A1 (en) * 2002-08-21 2004-03-04 Koninklijke Philips Electronics N.V. Delay line for multiple propagation paths reception
GB2410162B (en) * 2004-01-16 2005-12-21 Compxs Uk Ltd Spread spectrum acquisition
US7512172B2 (en) * 2004-09-30 2009-03-31 Yan Zhang Path search method for CDMA communication systems
US7650839B2 (en) * 2005-02-09 2010-01-26 Eastman Kodak Company Method for registering patterns on a web
WO2006129349A1 (ja) * 2005-05-31 2006-12-07 Fujitsu Limited データ受信装置
US7715505B2 (en) * 2005-07-28 2010-05-11 Itt Manufacturing Enterprises, Inc Adaptive synchronization enhancement technique for serial modulated waveforms
US7801255B2 (en) * 2005-07-28 2010-09-21 Itt Manufacturing Enterprises, Inc. Synchronization technique for serial modulated waveforms
EP1917724A1 (de) * 2005-08-05 2008-05-07 Thomson Licensing Verfahren und vorrichtung zur zeitlich gemultiplexten nicht kohärenten mehrwegesuche
US8121228B2 (en) * 2005-11-04 2012-02-21 Freescale Semiconductor, Inc. Detecting a data frame
US20070248191A1 (en) * 2006-04-25 2007-10-25 Telefonaktiebolaget Lm Ericsson (Publ) Baseband sample selection
US7889777B2 (en) 2006-11-08 2011-02-15 Silicon Laboratories Inc. System and method for data transfer in frequency hopping wireless networks
ES2390311T3 (es) * 2008-02-29 2012-11-08 Selex Elsag S.P.A. Aparato y procedimiento para la adquisición de una secuencia de ensanchamiento en sistemas DSSS aperiódicos
CN101252406B (zh) * 2008-03-28 2012-04-25 哈尔滨工业大学 抗多址干扰的直接序列扩频通信系统
US8711902B2 (en) * 2009-01-15 2014-04-29 Nec Corporation Synchronization processing circuit and synchronization processing method in wireless communication system
WO2010107567A1 (en) * 2009-03-16 2010-09-23 Rmo, Inc. Orthodontic bracket having an archwire channel and archwire retaining mechanism
US8442469B2 (en) * 2009-12-15 2013-05-14 At&T Mobility Ii Llc Methods, system, and computer program product for optimizing signal quality of a composite received signal
WO2015122810A1 (en) * 2014-02-14 2015-08-20 Telefonaktiebolaget L M Ericsson (Publ) Determination of bit rate request
US9846228B2 (en) 2016-04-07 2017-12-19 Uhnder, Inc. Software defined automotive radar systems
US9689967B1 (en) 2016-04-07 2017-06-27 Uhnder, Inc. Adaptive transmission and interference cancellation for MIMO radar
US10261179B2 (en) 2016-04-07 2019-04-16 Uhnder, Inc. Software defined automotive radar
EP3449272B1 (de) 2016-04-25 2022-11-02 Uhnder, Inc. Fahrzeugradarsystem mit einem gemeinsamen radar und kommunikationssystem, und verfahren zur verwaltung eines solchen systems in einem fahrzeug
US9791564B1 (en) 2016-04-25 2017-10-17 Uhnder, Inc. Adaptive filtering for FMCW interference mitigation in PMCW radar systems
US10573959B2 (en) 2016-04-25 2020-02-25 Uhnder, Inc. Vehicle radar system using shaped antenna patterns
EP3449275A4 (de) 2016-04-25 2020-01-01 Uhnder, Inc. Verringerung der pmcw-pcmw-interferenz
US9791551B1 (en) 2016-04-25 2017-10-17 Uhnder, Inc. Vehicular radar system with self-interference cancellation
US9806914B1 (en) 2016-04-25 2017-10-31 Uhnder, Inc. Successive signal interference mitigation
US9945935B2 (en) 2016-04-25 2018-04-17 Uhnder, Inc. Digital frequency modulated continuous wave radar using handcrafted constant envelope modulation
US9753121B1 (en) 2016-06-20 2017-09-05 Uhnder, Inc. Power control for improved near-far performance of radar systems
US9869762B1 (en) 2016-09-16 2018-01-16 Uhnder, Inc. Virtual radar configuration for 2D array
WO2018146634A1 (en) 2017-02-10 2018-08-16 Uhnder, Inc. Increasing performance of a receive pipeline of a radar with memory optimization
WO2018146530A1 (en) 2017-02-10 2018-08-16 Uhnder, Inc. Reduced complexity fft-based correlation for automotive radar
US11454697B2 (en) 2017-02-10 2022-09-27 Uhnder, Inc. Increasing performance of a receive pipeline of a radar with memory optimization
US11105890B2 (en) 2017-12-14 2021-08-31 Uhnder, Inc. Frequency modulated signal cancellation in variable power mode for radar applications
US11474225B2 (en) 2018-11-09 2022-10-18 Uhnder, Inc. Pulse digital mimo radar system
WO2020183392A1 (en) 2019-03-12 2020-09-17 Uhnder, Inc. Method and apparatus for mitigation of low frequency noise in radar systems
US11899126B2 (en) 2020-01-13 2024-02-13 Uhnder, Inc. Method and system for multi-chip operation of radar systems

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550414A (en) 1983-04-12 1985-10-29 Charles Stark Draper Laboratory, Inc. Spread spectrum adaptive code tracker
US4642567A (en) * 1984-06-04 1987-02-10 Indiana University Foundation Methods for two dimensional nuclear magnetic resonance imaging
JPH065822B2 (ja) * 1989-01-19 1994-01-19 日本電気株式会社 並列処理形トランスバーサル等化器
CH679718A5 (de) * 1989-10-19 1992-03-31 Ascom Zelcom Ag
US5218619A (en) 1990-12-17 1993-06-08 Ericsson Ge Mobile Communications Holding, Inc. CDMA subtractive demodulation
US5099243A (en) * 1991-03-06 1992-03-24 The United States Of America As Represented By The Secretary Of The Air Force Digital frequency measurement receiver with bandwidth improvement through multiple sampling of complex signals
US5406586A (en) * 1991-07-09 1995-04-11 At&T Corp. Signal correlation technique
US5237586A (en) 1992-03-25 1993-08-17 Ericsson-Ge Mobile Communications Holding, Inc. Rake receiver with selective ray combining
US5255292A (en) * 1992-03-27 1993-10-19 Motorola, Inc. Method and apparatus for modifying a decision-directed clock recovery system
US5295153A (en) 1992-04-13 1994-03-15 Telefonaktiebolaget L M Ericsson CDMA frequency allocation
US5440583A (en) * 1992-08-24 1995-08-08 Nec Corporation Decision feedback equalizer with second-order recursive filter controlled with two feedback coefficients
JP2663820B2 (ja) * 1992-12-28 1997-10-15 日本電気株式会社 判定帰還形等化器
JPH0758669A (ja) 1993-08-11 1995-03-03 Fujitsu Ltd デジタルマッチドフィルタ
US5425049A (en) 1993-10-25 1995-06-13 Ericsson Ge Mobile Communications Inc. Staggered frequency hopping cellular radio system
US5422909A (en) * 1993-11-30 1995-06-06 Motorola, Inc. Method and apparatus for multi-phase component downconversion
US5572552A (en) 1994-01-27 1996-11-05 Ericsson Ge Mobile Communications Inc. Method and system for demodulation of downlink CDMA signals
JPH088780A (ja) 1994-06-23 1996-01-12 Toshiba Corp 相関器及びスペクトル拡散通信システム
KR100220140B1 (ko) 1994-12-28 1999-09-01 다치카와 게이지 씨디엠에이 전송 시스템의 확산 스펙트럼 코드를 초기 동기시키 기 위한 장치 및 방법
US5742591A (en) * 1995-06-07 1998-04-21 General Instrument Corporation Interference cancellation system for CATV return transmissions
DE69610091T2 (de) 1995-06-07 2001-04-05 Time Domain Corp Vorrichtung zur schnellen verriegelung fur mehrkanal-ultrabreitbandkommunikation
US5615209A (en) 1995-07-26 1997-03-25 Ericsson Inc. Method and apparatus for CDMA signal orthogonalization
JP3000037B2 (ja) * 1995-09-08 2000-01-17 エヌ・ティ・ティ移動通信網株式会社 通信方法及び同通信方法のための装置
JP2944492B2 (ja) 1995-11-10 1999-09-06 国際電気株式会社 マッチドフィルタ装置
EP0800284B1 (de) 1996-04-04 2006-01-04 New Japan Radio Corp., Ltd. Korrelator für Spreizspektrumsignale
US5903597A (en) * 1996-05-20 1999-05-11 Trimble Navigation Limited Suppression on multipath signal effects
JPH09321667A (ja) 1996-05-29 1997-12-12 Yozan:Kk Ｃｄｍａ通信システム用受信機
US5920287A (en) * 1997-01-21 1999-07-06 Widata Corporation Radio location system for precisely tracking objects by RF transceiver tags which randomly and repetitively emit wideband identification signals

Also Published As

Publication number Publication date
DE69909596T2 (de) 2004-04-15
US20010002919A1 (en) 2001-06-07
EP1057280A1 (de) 2000-12-06
AU2566599A (en) 1999-08-30
US6621858B2 (en) 2003-09-16
US6363105B1 (en) 2002-03-26
CN1291383A (zh) 2001-04-11
WO1999041846A1 (en) 1999-08-19
KR20010034503A (ko) 2001-04-25
JP2002503908A (ja) 2002-02-05
EP1057280B1 (de) 2003-07-16

Similar Documents

Publication Publication Date Title
DE69909596D1 (de) Flexibler gleitender korrelator für direktsequenzspreizspektrumsysteme
DE69823103D1 (de) Trägerrückgewinnung für Direktsequenzspreizspektrumsignale
DE69735031D1 (de) Korrelator für Spreizspektrumsignale
DE69810581D1 (de) Merkmalkorrelator für Fingerabdrücke
DE69927090D1 (de) Mehrbenutzerstörunterdrücker für ein DS-CDMA-System
DE69832805D1 (de) Kanalstruktur für kommunikationssystemen
DE69932368D1 (de) Störungsdetektion für Spreizspektrumsysteme
BR0014197B1 (pt) inserto flexÍvel para um conduto de cabo subterrÂneo.
DE69734693D1 (de) Sequenzerzeugung für asynchrone Spreizspektrumübertragung
DE10085372T1 (de) Konfigurierbares Codegenerator-System für Spread-Spektrum-Anwendungen
DE69700255T2 (de) Mehrbenutzer-Demodulator für CDMA-Spreitzbandkommunikationssystem
DE69927465D1 (de) Kanalzuweisungssystem
NO984300D0 (no) Armert, fleksibel r°rledning
DE69726786D1 (de) Spreizspektrumempfänger
DE69736033D1 (de) Spreizspektrum-Mehrwegdemodulator
DE69922116D1 (de) Spreizspektrumdiversitysender/-empfänger
DE69634466D1 (de) Mehrbenutzerempfang für CDMA
DE69833498D1 (de) Kanalsimulator für mobile systeme
DE69723596D1 (de) Kanalschätzung
DE60030018D1 (de) Korrelator für CDMA Kodeerfassung
ITTO980746A0 (it) Graffa di ritegno, particolarmente per canaletta destinata ad apparec- chiature elettriche.
DE29719650U1 (de) Schiebeklemme
DE29720708U1 (de) Spreizvorrichtung für Reifen
DE29709056U1 (de) Gleithilfe für Fallschirmspringer
DE69904321D1 (de) Empfänger für cdma-system

Legal Events

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