FI954558A0 - Menetelmä ja järjestelmä "alas-linkki"-CDMA-signaalien demodulointia varten - Google Patents

Menetelmä ja järjestelmä "alas-linkki"-CDMA-signaalien demodulointia varten

Info

Publication number
FI954558A0
FI954558A0 FI954558A FI954558A FI954558A0 FI 954558 A0 FI954558 A0 FI 954558A0 FI 954558 A FI954558 A FI 954558A FI 954558 A FI954558 A FI 954558A FI 954558 A0 FI954558 A0 FI 954558A0
Authority
FI
Finland
Prior art keywords
demodulating
downlink
cdma signals
cdma
signals
Prior art date
Application number
FI954558A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI954558A (fi
Inventor
Paul W Dent
Gregory E Bottomley
Original Assignee
Ericsson Ge Mobile Communicat
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 Ge Mobile Communicat filed Critical Ericsson Ge Mobile Communicat
Publication of FI954558A0 publication Critical patent/FI954558A0/fi
Publication of FI954558A publication Critical patent/FI954558A/fi

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
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0865—Independent weighting, i.e. weights based on own antenna reception parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Circuits Of Receivers In General (AREA)
FI954558A 1994-01-27 1995-09-26 Menetelmä ja järjestelmä "alas-linkki"-CDMA-signaalien demodulointia varten FI954558A (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/187,062 US5572552A (en) 1994-01-27 1994-01-27 Method and system for demodulation of downlink CDMA signals
PCT/US1995/001010 WO1995020842A1 (en) 1994-01-27 1995-01-27 Method and system for demodulation of downlink cdma signals

Publications (2)

Publication Number Publication Date
FI954558A0 true FI954558A0 (fi) 1995-09-26
FI954558A FI954558A (fi) 1995-09-26

Family

ID=22687464

Family Applications (1)

Application Number Title Priority Date Filing Date
FI954558A FI954558A (fi) 1994-01-27 1995-09-26 Menetelmä ja järjestelmä "alas-linkki"-CDMA-signaalien demodulointia varten

Country Status (13)

Country Link
US (1) US5572552A (cs)
KR (1) KR100383208B1 (cs)
CN (1) CN1063890C (cs)
AU (1) AU1732695A (cs)
BR (1) BR9505692A (cs)
CA (1) CA2157661C (cs)
DE (1) DE19580134T1 (cs)
ES (1) ES2120352B1 (cs)
FI (1) FI954558A (cs)
FR (1) FR2715523B1 (cs)
MX (1) MX9504051A (cs)
SE (1) SE521004C2 (cs)
WO (1) WO1995020842A1 (cs)

Families Citing this family (92)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5677930A (en) * 1995-07-19 1997-10-14 Ericsson Inc. Method and apparatus for spread spectrum channel estimation
US5809020A (en) * 1996-03-18 1998-09-15 Motorola, Inc. Method for adaptively adjusting weighting coefficients in a cDMA radio receiver
US5799011A (en) * 1996-03-29 1998-08-25 Motorola, Inc. CDMA power control channel estimation using dynamic coefficient scaling
US5768307A (en) * 1996-09-13 1998-06-16 Telefonaktiebolaget Lm Ericsson Coherent demodulation with decision-directed channel estimation for digital communication
US6034987A (en) * 1996-12-17 2000-03-07 Ericsson Inc. System for improving the quality of a received radio signal
US6360079B2 (en) * 1997-02-12 2002-03-19 Interdigital Technology Corporation Global channel power control to minimize spillover in a wireless communication environment
JP3164008B2 (ja) * 1997-03-04 2001-05-08 日本電気株式会社 無線受信機
US6925127B1 (en) 1997-07-22 2005-08-02 Ericsson Inc. Method and apparatus for subtracting multiple rays of multiple interfering received signals
JP2991170B2 (ja) * 1997-10-01 1999-12-20 日本電気株式会社 Ｃｄｍａ受信装置および方法
US6175588B1 (en) 1997-12-30 2001-01-16 Motorola, Inc. Communication device and method for interference suppression using adaptive equalization in a spread spectrum communication system
US6175587B1 (en) 1997-12-30 2001-01-16 Motorola, Inc. Communication device and method for interference suppression in a DS-CDMA system
US6363105B1 (en) 1998-02-17 2002-03-26 Ericsson Inc. Flexible sliding correlator for direct sequence spread spectrum systems
US6212368B1 (en) * 1998-05-27 2001-04-03 Ericsson Inc. Measurement techniques for diversity and inter-frequency mobile assisted handoff (MAHO)
SE9802109D0 (sv) * 1998-06-12 1998-06-12 Ericsson Telefon Ab L M One-bit correlator rake receiver
US6047035A (en) * 1998-06-15 2000-04-04 Dspc Israel Ltd. Method and device for quantizing the input to soft decoders
EP0967742B1 (de) * 1998-06-25 2007-03-21 Philips Intellectual Property & Standards GmbH Drahtloses Netzwerk
EP0981206B1 (en) * 1998-08-19 2005-11-23 Siemens Aktiengesellschaft Spread spectrum receiver with reduction of intersymbol interference
US6208684B1 (en) 1998-09-18 2001-03-27 Dspc Technologies Ltd. Cyclic adaptive receivers for DS-CDMA signals
US6363104B1 (en) 1998-10-02 2002-03-26 Ericsson Inc. Method and apparatus for interference cancellation in a rake receiver
US6687461B1 (en) 1998-11-04 2004-02-03 Board Of Regents, The University Of Texas System Active optical lattice filters
US6700923B1 (en) * 1999-01-04 2004-03-02 Board Of Regents The University Of Texas System Adaptive multiple access interference suppression
US6507602B1 (en) 1999-01-07 2003-01-14 Ericsson, Inc. Smoothing receiver channel estimates using spectral estimation
US6470044B1 (en) 1999-01-15 2002-10-22 Sharp Laboratories Of America, Inc. Computationally parsimonious forward link receiver for DS-CDMA systems and method for same
US6501788B1 (en) 1999-01-22 2002-12-31 Ericsson Inc. Apparatus and methods for intereference cancellation in spread spectrum communications systems
US6625200B1 (en) 1999-01-25 2003-09-23 Ericsson Inc. Multi-stage CDMA synchronization with parallel execution
US6556634B1 (en) 1999-02-10 2003-04-29 Ericsson, Inc. Maximum likelihood rake receiver for use in a code division, multiple access wireless communication system
US6567390B1 (en) * 1999-03-29 2003-05-20 Lsi Logic Corporation Accelerated message decoding
US6782036B1 (en) 1999-05-26 2004-08-24 Board Of Regents, The University Of Texas System Smart antenna multiuser detector
US6714585B1 (en) 1999-06-25 2004-03-30 Ericsson Inc. Rake combining methods and apparatus using weighting factors derived from knowledge of spreading spectrum signal characteristics
US6574270B1 (en) 1999-07-30 2003-06-03 Ericsson Inc. Baseband interference canceling spread spectrum communications methods and apparatus
US6515980B1 (en) * 1999-09-22 2003-02-04 Ericsson Inc. Methods and apparatus for interference cancellation using complex interference orthogonalization techniques
US6922434B2 (en) 1999-10-19 2005-07-26 Ericsson Inc. Apparatus and methods for finger delay selection in RAKE receivers
US6683924B1 (en) 1999-10-19 2004-01-27 Ericsson Inc. Apparatus and methods for selective correlation timing in rake receivers
US6590932B1 (en) * 1999-11-24 2003-07-08 Ericsson Inc. Methods, receiver devices and systems for whitening a signal disturbance in a communication signal
EP1155511A1 (en) * 1999-12-22 2001-11-21 Koninklijke Philips Electronics N.V. Method and apparatus for adaptively selecting a soft symbol
US6674820B1 (en) * 2000-02-15 2004-01-06 Ericsson Inc. Receiver devices, systems and methods for receiving communication signals subject to colored noise
GB2359950B (en) * 2000-02-29 2004-06-30 Ericsson Telefon Ab L M Signal filtering
US6430214B1 (en) * 2000-05-22 2002-08-06 Motorola, Inc. Fading resistant multi-level QAM receiver
KR100675907B1 (ko) * 2000-10-04 2007-01-29 에스케이 텔레콤주식회사 다중률 코드 분할 다원 접속 시스템에서의 다원 접속 간섭제거 장치
US7443826B1 (en) 2000-10-04 2008-10-28 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for automatic frequency control in a CDMA receiver
ATE336829T1 (de) * 2000-10-06 2006-09-15 Ericsson Inc Verfahren und vorrichtung zum subtrahieren von mehreren pfaden empfangener störsignale
US6934317B1 (en) 2000-10-11 2005-08-23 Ericsson Inc. Systems and methods for communicating spread spectrum signals using variable signal constellations
US7769078B2 (en) * 2000-12-22 2010-08-03 Telefonaktiebolaget Lm Ericsson (Publ) Apparatus, methods and computer program products for delay selection in a spread-spectrum receiver
US7778312B2 (en) * 2000-12-22 2010-08-17 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for selecting demodulation processing delays in a receiver
EP1282258A1 (en) * 2001-08-02 2003-02-05 Mitsubishi Electric Information Technology Centre Europe B.V. Method and apparatus for synchronising receivers
US7440489B2 (en) * 2001-08-07 2008-10-21 Ericsson Inc. Method and apparatus for selective demodulation and decoding of communications signals
US7218672B2 (en) * 2001-10-16 2007-05-15 Koninklijke Philips Electronics N.V. Apparatus and method for constraining the value of feedback filter tap coefficients in a decision feedback equalizer
US6993311B2 (en) * 2002-02-20 2006-01-31 Freescale Semiconductor, Inc. Radio receiver having an adaptive equalizer and method therefor
KR100630112B1 (ko) * 2002-07-09 2006-09-27 삼성전자주식회사 이동통신시스템의 적응형 채널 추정장치 및 방법
US6987797B2 (en) * 2002-07-26 2006-01-17 Qualcomm Incorporated Non-parametric matched filter receiver for wireless communication systems
US7532864B2 (en) * 2003-02-17 2009-05-12 Panasonic Corporation Noise power estimation method and noise power estimation device
US20040161057A1 (en) * 2003-02-18 2004-08-19 Malladi Durga Prasad Communication receiver with a rake-based adaptive equalizer
US7257377B2 (en) * 2003-02-18 2007-08-14 Qualcomm, Incorporated Systems and methods for improving channel estimation
US20040203812A1 (en) * 2003-02-18 2004-10-14 Malladi Durga Prasad Communication receiver with an adaptive equalizer that uses channel estimation
US7272176B2 (en) * 2003-02-18 2007-09-18 Qualcomm Incorporated Communication receiver with an adaptive equalizer
CN100342738C (zh) * 2003-02-22 2007-10-10 艾利森电话股份有限公司 用于功率估计的装置和方法
US6956917B2 (en) * 2003-04-17 2005-10-18 Finisar Corporation Method and apparatus for reducing interference in an optical data stream using data-independent equalization
US7239677B2 (en) * 2003-04-29 2007-07-03 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for soft symbol scaling
US7116998B2 (en) * 2003-05-14 2006-10-03 Telefonaktiebolaget L M Ericsson (Publ) Subtractive multipath delay detection
US6944434B2 (en) * 2003-06-27 2005-09-13 Nokia Corporation Method and apparatus for suppressing co-channel interference in a receiver
US7042657B2 (en) 2003-08-28 2006-05-09 Board Of Regents The University Of Texas System Filter for selectively processing optical and other signals
US7675968B2 (en) * 2003-09-29 2010-03-09 Hiroshi Takatori Adaptive FIR filter and method
US7428260B2 (en) * 2003-10-30 2008-09-23 Marvell World Trade Ltd. Unified MMSE equalization and multi-user detection approach for use in a CDMA system
US7437135B2 (en) 2003-10-30 2008-10-14 Interdigital Technology Corporation Joint channel equalizer interference canceller advanced receiver
US7400692B2 (en) 2004-01-14 2008-07-15 Interdigital Technology Corporation Telescoping window based equalization
US7676000B2 (en) * 2004-01-15 2010-03-09 Ittiam Systems (P) Ltd. Systems and methods for an adaptive rake receiver
US7539240B2 (en) * 2004-03-12 2009-05-26 Telefonaftiebolaget Lm Ericsson (Publ) Method and apparatus for parameter estimation in a generalized rake receiver
US7848389B2 (en) * 2004-03-12 2010-12-07 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for scaling parameter estimation in parametric generalized rake receivers
JP4097615B2 (ja) * 2004-03-23 2008-06-11 三洋電機株式会社 信号検出方法および装置ならびにそれを利用した送信装置および受信装置
US7536158B2 (en) * 2004-03-29 2009-05-19 Telefonaktiebolaget Lm Ericsson (Publ) Impairment correlation estimation in a spread spectrum system
US8165186B2 (en) 2005-08-12 2012-04-24 Qualcomm Incorporated Channel estimation for wireless communication
US7602838B2 (en) * 2005-12-22 2009-10-13 Telefonaktiebolaget Lm Ericsson (Publ) Linear turbo equalization using despread values
DE102007022978A1 (de) * 2007-05-15 2008-11-20 Atmel Germany Gmbh Korrelationsvorrichtung
US8130880B1 (en) 2007-05-23 2012-03-06 Hypress, Inc. Wideband digital spectrometer
US7864663B2 (en) * 2007-05-25 2011-01-04 Telefonaktiebolaget Lm Ericsson (Publ) Orthogonal spread-spectrum waveform generation with non-contiguous spectral occupancy for use in CDMA communications
EP2195944B1 (en) 2007-10-03 2018-12-05 LG Electronics Inc. Optimizing transmission for broadcast multicast service
US8098717B1 (en) 2008-11-25 2012-01-17 Marvell International Ltd. Hybrid equalizer
CN102195904A (zh) * 2010-03-18 2011-09-21 电信科学技术研究院 一种同频算法信道估计处理方法及设备
US8644376B2 (en) * 2010-09-30 2014-02-04 Alcatel Lucent Apparatus and method for generating compressive measurements of video using spatial and temporal integration
US8929456B2 (en) 2010-09-30 2015-01-06 Alcatel Lucent Video coding using compressive measurements
US9344736B2 (en) 2010-09-30 2016-05-17 Alcatel Lucent Systems and methods for compressive sense imaging
US9634690B2 (en) 2010-09-30 2017-04-25 Alcatel Lucent Method and apparatus for arbitrary resolution video coding using compressive sampling measurements
US9319578B2 (en) 2012-10-24 2016-04-19 Alcatel Lucent Resolution and focus enhancement
US9398310B2 (en) 2011-07-14 2016-07-19 Alcatel Lucent Method and apparatus for super-resolution video coding using compressive sampling measurements
RU2494550C2 (ru) * 2011-12-19 2013-09-27 Федеральное государственное военное образовательное учреждение высшего профессинального образования Военная академия Ракетных войск стратегического назначения имени Петра Великого МО РФ Передатчик с кодовым разделением каналов с высокой структурной скрытностью передаваемых сигналов
US9344303B1 (en) 2012-01-04 2016-05-17 Marvell International Ltd. Adaptive signal covariance estimation for MMSE equalization
US9563806B2 (en) 2013-12-20 2017-02-07 Alcatel Lucent Methods and apparatuses for detecting anomalies using transform based compressed sensing matrices
US9600899B2 (en) 2013-12-20 2017-03-21 Alcatel Lucent Methods and apparatuses for detecting anomalies in the compressed sensing domain
US9894324B2 (en) 2014-07-15 2018-02-13 Alcatel-Lucent Usa Inc. Method and system for modifying compressive sensing block sizes for video monitoring using distance information
US9660743B1 (en) 2014-08-27 2017-05-23 Marvell International Ltd. Channel estimation by searching over channel response candidates having dominant components
RU2608585C1 (ru) * 2016-02-09 2017-01-23 Открытое акционерное общество научно-внедренческое предприятие "ПРОТЕК" Временной компенсатор для обеспечения электромагнитной совместимости отечественного передатчика радиопомех НАП ГНСС противника с отечественной НАП ГНСС при их одновременной работе на совпадающих частотах
RU2700690C1 (ru) * 2018-11-15 2019-09-19 Федеральное государственное казенное военное образовательное учреждение высшего образования "Военная академия Ракетных войск стратегического назначения имени Петра Великого" МО РФ Передатчик с когерентным частотно-кодовым разделением каналов и с высокой структурной скрытностью передаваемых сигналов

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4709374A (en) * 1984-07-05 1987-11-24 American Telephone And Telegraph Company Technique for decision-directed equalizer train/retrain
US4761796A (en) * 1985-01-24 1988-08-02 Itt Defense Communications High frequency spread spectrum communication system terminal
JPH0750863B2 (ja) * 1987-09-25 1995-05-31 日本電気株式会社 受信器
US5127051A (en) * 1988-06-13 1992-06-30 Itt Corporation Adaptive modem for varying communication channel
SE463540B (sv) * 1988-09-19 1990-12-03 Ericsson Telefon Ab L M Saett foer att i ett radiokommunikationssystem digitalisera godtyckliga radiosignaler samt anordning foer utoevande av saettet
US5010333A (en) * 1989-05-17 1991-04-23 Halliburton Logging Services, Inc. Advanced digital telemetry system for monocable transmission featuring multilevel correlative coding and adaptive transversal filter equalizer
US4985684A (en) * 1989-08-31 1991-01-15 Motorola, Inc. Fully integrated digital FM discriminator
US5218619A (en) * 1990-12-17 1993-06-08 Ericsson Ge Mobile Communications Holding, Inc. CDMA subtractive demodulation
EP0505657A1 (en) * 1991-03-27 1992-09-30 International Business Machines Corporation Preamble recognition and synchronization detection in partial-response systems
US5311545A (en) * 1991-06-17 1994-05-10 Hughes Aircraft Company Modem for fading digital channels affected by multipath
US5268930A (en) * 1991-12-19 1993-12-07 Novatel Communications Ltd. Decision feedback equalizer
US5237586A (en) * 1992-03-25 1993-08-17 Ericsson-Ge Mobile Communications Holding, Inc. Rake receiver with selective ray combining
US5353352A (en) * 1992-04-10 1994-10-04 Ericsson Ge Mobile Communications Inc. Multiple access coding for radio communications
US5305349A (en) * 1993-04-29 1994-04-19 Ericsson Ge Mobile Communications Inc. Quantized coherent rake receiver
US5361276A (en) * 1993-09-13 1994-11-01 At&T Bell Laboratories All digital maximum likelihood based spread spectrum receiver
US5506861A (en) * 1993-11-22 1996-04-09 Ericsson Ge Mobile Comminications Inc. System and method for joint demodulation of CDMA signals
US5499272A (en) * 1994-05-31 1996-03-12 Ericsson Ge Mobile Communications Inc. Diversity receiver for signals with multipath time dispersion

Also Published As

Publication number Publication date
WO1995020842A1 (en) 1995-08-03
FR2715523A1 (fr) 1995-07-28
US5572552A (en) 1996-11-05
FI954558A (fi) 1995-09-26
DE19580134T1 (de) 1996-02-22
SE9503231D0 (sv) 1995-09-18
CA2157661A1 (en) 1995-08-03
CN1063890C (zh) 2001-03-28
MX9504051A (es) 1997-04-30
KR100383208B1 (ko) 2003-07-22
KR960701530A (cs) 1996-02-24
SE9503231L (sv) 1995-11-15
CA2157661C (en) 2005-05-17
ES2120352B1 (es) 1999-05-01
FR2715523B1 (fr) 2004-07-30
AU1732695A (en) 1995-08-15
SE521004C2 (sv) 2003-09-23
ES2120352A1 (es) 1998-10-16
BR9505692A (pt) 1996-01-16
CN1124544A (zh) 1996-06-12

Similar Documents

Publication Publication Date Title
FI954558A0 (fi) Menetelmä ja järjestelmä "alas-linkki"-CDMA-signaalien demodulointia varten
FI943249A (fi) Menetelmä vastaanottimen ohjaamiseksi ja vastaanotin
DE69730238D1 (de) Kommunikationssystem und -verfahren
FI944835A0 (fi) Järjestely lähetyksen ja vastaanoton erottamiseksi
DE69129846D1 (de) Synchrones spreizspektrum-kommunikationssystem und -verfahren
FI971827A (fi) Menetelmä ja laite kanavaestimointiin
FI964330A (fi) Menetelmä ja laite porrashissejä varten
FI961362A (fi) Häiriöiden vähentämismenetelmä ja radiojärjestelmä
OA09340A (en) Irrigation system and irrigation method
FI963172A (fi) Kytkentämenetelmä ja laite
FI965162A0 (fi) Puhelinjärjestelmä ja menetelmä sitä varten
KR960009470A (ko) Cdma 통신시스템
FI970098A0 (fi) Menetelmä ja yhdiste hiustenlähdön hoitamiseksi
FI965118A0 (fi) Menetelmä ja järjestely signalointijärjestelmiin
ITBS970015A0 (it) Metodo ed impianto per la mitilicoltura
GB9018443D0 (en) Arrangement for demodulating multiplexed signals and method of performing the same
FI962131A0 (fi) Menetelmä kudonnassa ja kudontalaitteisto
SE9403475D0 (sv) Sätt och anordning avseende skyddsdräkt
SE9603414D0 (sv) Förfarande för betning och anordning enligt förfarandet
FI942862A0 (fi) Foerfarande och system foer butikoevervakning
SE9600865D0 (sv) System för färgsättning och kulörval
SE9500063D0 (sv) Förfarande och system för tidregistrering
SE9501126D0 (sv) Förfarande och anordning för kylning
SE9400975D0 (sv) Sätt och anordning för överföring av information
FI960008A0 (fi) Foerfarande och anordning med vilken en jonproduktionselektrod haolls ren