BR0115660A - Detecção de único usuário - Google Patents

Detecção de único usuário

Info

Publication number
BR0115660A
BR0115660A BR0115660-8A BR0115660A BR0115660A BR 0115660 A BR0115660 A BR 0115660A BR 0115660 A BR0115660 A BR 0115660A BR 0115660 A BR0115660 A BR 0115660A
Authority
BR
Brazil
Prior art keywords
determined
combined signal
data
channel response
data signals
Prior art date
Application number
BR0115660-8A
Other languages
English (en)
Inventor
Parthapratim De
Ariela Zeira
Jung-Lin Pan
Raj Mani Misra
Original Assignee
Interdigital Tech 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 Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of BR0115660A publication Critical patent/BR0115660A/pt

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
    • H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
    • 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
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7105—Joint detection techniques, e.g. linear detectors
    • 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
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7105—Joint detection techniques, e.g. linear detectors
    • H04B1/71052—Joint detection techniques, e.g. linear detectors using decorrelation matrix
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Noise Elimination (AREA)

Abstract

"DETECçãO DE úNICO USUáRIO". Um local transmissor emite uma série de sinais de dados ao longo de um espectro compartilhado em um sistema de comunicação de múltiplo acesso por divisão de códigos. Cada sinal de dados transmitido experimenta resposta de canal similar. é recebido um sinal combinado dos sinais de dados transmitidos. O sinal combinado é amostrado em um múltiplo da velocidade do "chip". é determinada a resposta de canal para o sinal combinado. é determinado um primeiro elemento de um vetor de dados difundidos, através da utilização das amostras de sinal combinadas e da resposta de canal estimada. Utilizando um fator a partir da determinação do primeiro elemento, são determinados os elementos restantes do vetor de dados difundidos. Os dados dos sinais de dados são determinados através da utilização dos elementos determinados do vetor de dados difundidos.
BR0115660-8A 2000-11-09 2001-11-08 Detecção de único usuário BR0115660A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US24694700P 2000-11-09 2000-11-09
PCT/US2001/046747 WO2002039610A2 (en) 2000-11-09 2001-11-08 Single user detection

Publications (1)

Publication Number Publication Date
BR0115660A true BR0115660A (pt) 2004-01-06

Family

ID=22932878

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0115660-8A BR0115660A (pt) 2000-11-09 2001-11-08 Detecção de único usuário

Country Status (20)

Country Link
US (16) US7110383B2 (pt)
EP (2) EP1332565B1 (pt)
JP (5) JP4087705B2 (pt)
KR (4) KR100669970B1 (pt)
CN (4) CN101695005A (pt)
AR (1) AR031747A1 (pt)
AT (2) ATE517472T1 (pt)
AU (1) AU2002220234A1 (pt)
BR (1) BR0115660A (pt)
CA (2) CA2428992C (pt)
DE (2) DE60120740T2 (pt)
DK (1) DK1332565T3 (pt)
ES (1) ES2264995T3 (pt)
HK (1) HK1064525A1 (pt)
IL (4) IL155792A0 (pt)
MX (1) MXPA03004107A (pt)
MY (1) MY140055A (pt)
NO (1) NO20032046L (pt)
TW (1) TW540200B (pt)
WO (1) WO2002039610A2 (pt)

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US6856643B1 (en) * 1999-10-22 2005-02-15 Cwill Telecommunications, Inc. Communication system and method for performing fast symbol estimation for multiple access disperse channels
TW540200B (en) * 2000-11-09 2003-07-01 Interdigital Tech Corp Single user detection
US6707864B2 (en) * 2001-01-25 2004-03-16 Interdigital Technology Corporation Simplified block linear equalizer with block space time transmit diversity
GB2377347B (en) * 2001-07-02 2004-06-30 Ipwireless Inc Chip rate invariant detector
DE10138963B4 (de) * 2001-08-08 2009-04-02 Rohde & Schwarz Gmbh & Co. Kg Verfahren zum Schätzen von Parametern eines CDMA-Signals
DE10138962B4 (de) * 2001-08-08 2011-05-12 Rohde & Schwarz Gmbh & Co. Kg Verfahren zur Erkennung von aktiven Codesequenzen
US7203181B2 (en) 2002-06-28 2007-04-10 Interdigital Technology Corporation CDMA system transmission matrix coefficient calculation
US7408978B2 (en) 2002-09-09 2008-08-05 Interdigital Technology Corporation Extended algorithm data estimator
SG108906A1 (en) * 2003-02-27 2005-02-28 Sony Corp Digital communications channel estimation method
MXPA05009321A (es) 2003-03-03 2005-11-04 Interdigital Tech Corp Igualador basado en ventana deslizable de complejidad reducida.
US7042967B2 (en) * 2003-03-03 2006-05-09 Interdigital Technology Corporation Reduced complexity sliding window based equalizer
TW200537868A (en) * 2003-06-25 2005-11-16 Interdigital Tech Corp Reduced complexity sliding window based equalizer
US7006840B2 (en) 2003-09-30 2006-02-28 Interdigital Technology Corporation Efficient frame tracking in mobile receivers
US7570689B2 (en) * 2005-02-14 2009-08-04 Interdigital Technology Corporation Advanced receiver with sliding window block linear equalizer
CA2515996A1 (en) * 2005-08-15 2007-02-15 Research In Motion Limited Joint space-time optimum filters (jstof) for interference cancellation
US7733996B2 (en) 2005-05-25 2010-06-08 Research In Motion Limited Joint space-time optimum filters (JSTOF) for interference cancellation
JP4303265B2 (ja) * 2005-06-29 2009-07-29 三星電子株式会社 通信システムにおけるユーザ検出装置及び方法
US20070076791A1 (en) * 2005-07-26 2007-04-05 Interdigital Technology Corporation Approximate cholesky decomposition-based block linear equalizer
JP4129014B2 (ja) 2005-08-10 2008-07-30 株式会社エヌ・ティ・ティ・ドコモ 移動通信端末
CA2515932A1 (en) * 2005-08-15 2007-02-15 Research In Motion Limited Implementation of joint space-time optimum filters (jstof) using cholesky and eigenvalue decompositions
CA2516192A1 (en) * 2005-08-15 2007-02-15 Research In Motion Limited Implementation of joint space-time optimum filters (jstof) using qr and eigenvalue decompositions
CA2515997A1 (en) * 2005-08-15 2007-02-15 Research In Motion Limited Implementation of joint space-time optimum filters (jstof) using qr and eigenvalue decompositions
CA2515867A1 (en) * 2005-08-15 2007-02-15 Research In Motion Limited Implementation of joint space-time optimum filters (jstof) using cholesky and eigenvalue decompositions
CA2516124A1 (en) * 2005-08-15 2007-02-15 Research In Motion Limited Implementation of joint space-time optimum filters (jstof) using singular value decompositions
KR100656826B1 (ko) * 2005-12-23 2006-12-13 주식회사 케이티 준동기 부호분할 다원접속 시스템의 낮은 상관구역 수열군생성 장치 및 방법
JP4675255B2 (ja) * 2006-02-15 2011-04-20 株式会社日立国際電気 マルチユーザー検出装置
US20070217615A1 (en) * 2006-03-20 2007-09-20 Beceem Communications, Inc. Method and system for estimating a channel frequency response of a training symbol in a block transmission system
US20090180455A1 (en) * 2008-01-15 2009-07-16 Mukundan Ranganathan Method and system for cqi based adaptive diagonal loading for dmi-eq in hsdpa receivers
US20100011039A1 (en) * 2008-07-11 2010-01-14 James Vannucci Device and method for solving a system of equations
JP5258967B2 (ja) 2008-07-15 2013-08-07 エルジー エレクトロニクス インコーポレイティド オーディオ信号の処理方法及び装置
US8442468B2 (en) * 2010-04-12 2013-05-14 Telefonaktiebolaget L M Ericsson (Publ) Omni-directional sensing of radio spectra
CN102340326B (zh) * 2011-09-09 2016-04-13 中兴通讯股份有限公司 盲多用户检测方法及装置
US11595137B1 (en) * 2021-02-17 2023-02-28 Keysight Technologies, Inc. System and method of measuring error vector magnitude in the time domain

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US5157668A (en) * 1989-07-05 1992-10-20 Applied Diagnostics, Inc. Method and apparatus for locating faults in electronic units
US5157688A (en) * 1991-03-14 1992-10-20 Hughes Aircraft Company Spread spectrum transmitter for degrading spread spectrum feature detectors
US5337225A (en) * 1993-01-06 1994-08-09 The Standard Products Company Lighting strip system
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US5377226A (en) * 1993-10-19 1994-12-27 Hughes Aircraft Company Fractionally-spaced equalizer for a DS-CDMA system
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US5648983A (en) * 1995-04-24 1997-07-15 Lucent Technologies Inc. CDMA rake receiver with sub-chip resolution
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US6856643B1 (en) * 1999-10-22 2005-02-15 Cwill Telecommunications, Inc. Communication system and method for performing fast symbol estimation for multiple access disperse channels
TW540200B (en) * 2000-11-09 2003-07-01 Interdigital Tech Corp Single user detection
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Also Published As

Publication number Publication date
CN101692619A (zh) 2010-04-07
KR100669970B1 (ko) 2007-01-19
IL192393A (en) 2010-03-28
US7768986B2 (en) 2010-08-03
JP2004525539A (ja) 2004-08-19
US20100254440A1 (en) 2010-10-07
US7414999B2 (en) 2008-08-19
AU2002220234A1 (en) 2002-05-21
ATE330371T1 (de) 2006-07-15
TW540200B (en) 2003-07-01
IL155792A (en) 2008-11-26
US20020126619A1 (en) 2002-09-12
IL155792A0 (en) 2003-12-23
US20020159383A1 (en) 2002-10-31
US20070019590A1 (en) 2007-01-25
DE60120740T2 (de) 2007-03-29
NO20032046L (no) 2003-07-07
US7106719B2 (en) 2006-09-12
US7133394B2 (en) 2006-11-07
CN1502173A (zh) 2004-06-02
US7133412B2 (en) 2006-11-07
EP1686696A1 (en) 2006-08-02
US7126962B2 (en) 2006-10-24
EP1332565B1 (en) 2006-06-14
JP2004096795A (ja) 2004-03-25
US7110384B2 (en) 2006-09-19
US20080317103A1 (en) 2008-12-25
KR20060053017A (ko) 2006-05-19
DK1332565T3 (da) 2006-10-16
NO20032046D0 (no) 2003-05-07
KR100669962B1 (ko) 2007-01-19
US7110386B2 (en) 2006-09-19
AR031747A1 (es) 2003-10-01
JP4362504B2 (ja) 2009-11-11
US7126978B2 (en) 2006-10-24
US20020145989A1 (en) 2002-10-10
US20020141366A1 (en) 2002-10-03
JP2007049753A (ja) 2007-02-22
JP2009213181A (ja) 2009-09-17
DE1332565T1 (de) 2003-11-27
CN101695005A (zh) 2010-04-14
JP4087705B2 (ja) 2008-05-21
US20020141372A1 (en) 2002-10-03
WO2002039610A2 (en) 2002-05-16
US20020131383A1 (en) 2002-09-19
KR20050088165A (ko) 2005-09-01
MY140055A (en) 2009-11-30
US20020141373A1 (en) 2002-10-03
US7126961B2 (en) 2006-10-24
US7126960B2 (en) 2006-10-24
CA2428992A1 (en) 2002-05-16
CA2428992C (en) 2009-10-13
JP2012165468A (ja) 2012-08-30
US7110383B2 (en) 2006-09-19
IL199791A (en) 2013-01-31
ES2264995T3 (es) 2007-02-01
US7072290B2 (en) 2006-07-04
US20020159428A1 (en) 2002-10-31
CA2670653A1 (en) 2002-05-16
EP1332565A2 (en) 2003-08-06
CN101692618A (zh) 2010-04-07
KR20040034720A (ko) 2004-04-28
KR20040028682A (ko) 2004-04-03
ATE517472T1 (de) 2011-08-15
US20020154599A1 (en) 2002-10-24
WO2002039610A3 (en) 2003-03-13
JP3996888B2 (ja) 2007-10-24
KR100669959B1 (ko) 2007-01-18
US7126933B2 (en) 2006-10-24
EP1686696B1 (en) 2011-07-20
KR100669969B1 (ko) 2007-01-19
DE60120740D1 (de) 2006-07-27
US20020126646A1 (en) 2002-09-12
MXPA03004107A (es) 2004-01-29
HK1064525A1 (en) 2005-01-28
US20020154619A1 (en) 2002-10-24
CN100561881C (zh) 2009-11-18
US7110385B2 (en) 2006-09-19
US20020136160A1 (en) 2002-09-26
US20020131384A1 (en) 2002-09-19

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 14A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2343 DE 01-12-2015 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.