BR0008086A - Processo para decodificação de sìmbolos no sinalrecebido em um receptor para uso em uma redesem fio, receptor aperfeiçoado para decodificarsinais, e, processo aperfeiçoado paradecodificação de sìmbolos modulados de espectroespalhado - Google Patents

Processo para decodificação de sìmbolos no sinalrecebido em um receptor para uso em uma redesem fio, receptor aperfeiçoado para decodificarsinais, e, processo aperfeiçoado paradecodificação de sìmbolos modulados de espectroespalhado

Info

Publication number
BR0008086A
BR0008086A BR0008086-1A BR0008086A BR0008086A BR 0008086 A BR0008086 A BR 0008086A BR 0008086 A BR0008086 A BR 0008086A BR 0008086 A BR0008086 A BR 0008086A
Authority
BR
Brazil
Prior art keywords
decoding
receiver
symbols
redesign
wire
Prior art date
Application number
BR0008086-1A
Other languages
English (en)
Inventor
Paul W Dent
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
Publication of BR0008086A publication Critical patent/BR0008086A/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
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7105—Joint detection techniques, e.g. linear detectors
    • H04B1/71057—Joint detection techniques, e.g. linear detectors using maximum-likelihood sequence estimation [MLSE]
    • 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
    • H04B1/709—Correlator structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

"PROCESSO PARA DECODIFICAçãO DE SìMBOLOS NO SINALRECEBIDO EM UM RECEPTOR PARA USO EM UMA REDESEM FIO, RECEPTOR APERFEIçOADO PARA DECODIFICARSINAIS, E, PROCESSO APERFEIçOADO PARADECODIFICAçãO DE SìMBOLOS MODULADOS DE ESPECTROESPALHADO". Um receptor aperfeiçoado é divulgado paradecodificação de sinais codificados de espectro espalhadorecebidos através de um canal de propagação de múltiploscaminhos a fim de obter símbolos de informação decodificados. Oreceptor compreende um conversor para filtragem, amplificação,amostragem e conversão de sinais recebidos em amostrasnuméricas representativas e um correlacionador para correlacionaras amostras de sinais numéricos com um código dedesespalhamento através de cada um dos períodos de símbolosde informação para obter, para cada período de símbolos,correlações complexas para diferentes alinhamentos de tempoentre o código de desespalhamento e as amostras de sinais, cadaalinhamento de tempo correspondendo a um diferente dos múltiploscaminhos de propagação. O receptor ainda inclui dispositivo degeração de hipótese para gerar hipótese em seq³ências desímbolos de dados, dispositivo de estimativa de canais para formarestimativas de canais para cada um dos múltiplos caminhos depropagação como uma função das correlações complexas e dasseq³ências de símbolos com hipótese e dispositivo de decisãopara selecionar a mais provável das seq³ências com hipótese,usando as estimativas de canais, assim, decodificando os símbolosde informação.
BR0008086-1A 1999-02-10 2000-02-04 Processo para decodificação de sìmbolos no sinalrecebido em um receptor para uso em uma redesem fio, receptor aperfeiçoado para decodificarsinais, e, processo aperfeiçoado paradecodificação de sìmbolos modulados de espectroespalhado BR0008086A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/247,609 US6556634B1 (en) 1999-02-10 1999-02-10 Maximum likelihood rake receiver for use in a code division, multiple access wireless communication system
PCT/US2000/002896 WO2000048330A1 (en) 1999-02-10 2000-02-04 Maximum likelihood rake receiver for use in a code division, multiple access wireless communication system

Publications (1)

Publication Number Publication Date
BR0008086A true BR0008086A (pt) 2001-11-20

Family

ID=22935574

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0008086-1A BR0008086A (pt) 1999-02-10 2000-02-04 Processo para decodificação de sìmbolos no sinalrecebido em um receptor para uso em uma redesem fio, receptor aperfeiçoado para decodificarsinais, e, processo aperfeiçoado paradecodificação de sìmbolos modulados de espectroespalhado

Country Status (8)

Country Link
US (1) US6556634B1 (pt)
EP (1) EP1151549B1 (pt)
CN (1) CN1197266C (pt)
AT (1) ATE239329T1 (pt)
AU (1) AU3482500A (pt)
BR (1) BR0008086A (pt)
DE (1) DE60002438T2 (pt)
WO (1) WO2000048330A1 (pt)

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US6278726B1 (en) * 1999-09-10 2001-08-21 Interdigital Technology Corporation Interference cancellation in a spread spectrum communication system
US7143013B2 (en) * 1999-11-04 2006-11-28 Verticalband, Limited Reliable symbols as a means of improving the performance of information transmission systems
US7110923B2 (en) * 1999-11-04 2006-09-19 Verticalband, Limited Fast, blind equalization techniques using reliable symbols
US7085691B2 (en) * 1999-11-04 2006-08-01 Verticalband, Limited Reliable symbols as a means of improving the performance of information transmission systems
JP2004508765A (ja) * 2000-09-06 2004-03-18 クゥアルコム・インコーポレイテッド 時間分割多重パイロットデータから基準信号を提供する方法および装置
US6771691B1 (en) 2000-09-15 2004-08-03 Texas Instruments Incorporated System and method for extracting soft symbols in direct sequence spread spectrum communications
CN1146171C (zh) * 2000-11-24 2004-04-14 华为技术有限公司 大容量同步码分多址扩频通信系统的实现方法
FR2829326A1 (fr) * 2001-09-06 2003-03-07 France Telecom Procede et systeme de reception iterative sous optimale pour systeme de transmission haut debit cdma
US7430191B2 (en) * 2001-09-10 2008-09-30 Qualcomm Incorporated Method and apparatus for performing frequency tracking based on diversity transmitted pilots in a CDMA communication system
US6826235B2 (en) * 2002-01-04 2004-11-30 Itran Communications Ltd. Robust communications system utilizing repetition code and cumulative decoder associated therewith
EP1363405B1 (en) * 2002-05-17 2009-12-16 Mitsubishi Electric Information Technology Centre Europe B.V. Multi-user detection method with accelerated sphere decoding
KR20050039843A (ko) * 2002-08-14 2005-04-29 텔레폰악티에볼라겟엘엠에릭슨(펍) 절사 데이터를 디코딩하는 수신기 및 방법
US7609777B2 (en) * 2002-08-30 2009-10-27 Alcatel-Lucent Usa Inc. Maximum likelihood a posteriori probability detector
US20040125865A1 (en) * 2002-12-30 2004-07-01 Frank Colin D. Maximum signal-to-interference-and-noise spread spectrum rake receiver and method
US7400692B2 (en) * 2004-01-14 2008-07-15 Interdigital Technology Corporation Telescoping window based equalization
US7298799B1 (en) 2004-03-08 2007-11-20 Redpine Signals, Inc. All-tap fractionally spaced, serial rake combiner apparatus and method
GB2422991B (en) * 2005-02-03 2009-06-17 Agilent Technologies Inc Method of equalising a channel and apparatus therefor
US7574645B2 (en) * 2005-08-18 2009-08-11 Interdigital Technology Corporation Wireless communication method and apparatus for detecting and decoding enhanced dedicated channel hybrid automatic repeat request indicator channel transmissions
CN100373792C (zh) * 2005-10-28 2008-03-05 北京威讯紫晶科技有限公司 短程无线网络中接收数据的解码方法
US20070201408A1 (en) * 2006-02-08 2007-08-30 Nokia Corporation Apparatus, method and computer program product providing a transport format that is compatible with another transport format that uses spreading codes
US7957453B2 (en) * 2008-03-20 2011-06-07 Raytheon Company Method for operating a rake receiver
US20130170842A1 (en) * 2012-01-04 2013-07-04 Toshiaki Koike-Akino Method and System for Equalization and Decoding Received Signals Based on High-Order Statistics in Optical Communication Networks
WO2014006449A1 (en) * 2012-07-03 2014-01-09 Freescale Semiconductor, Inc. A communication device for wideband code division multiple access communication (w-cdma) system, a method for use therein and an associated semiconductor device
DE112013005093T5 (de) * 2012-10-22 2015-10-22 Intel Corporation Hochleistungszusammenschaltungsbitübertragungsschicht
US9210106B2 (en) 2013-07-02 2015-12-08 Freescale Semiconductor, Inc. Communication device for wideband code division multiple access communication (W-CDMA) system, a method for use therein and an associated semiconductor device

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Also Published As

Publication number Publication date
CN1354915A (zh) 2002-06-19
DE60002438T2 (de) 2003-11-20
EP1151549B1 (en) 2003-05-02
AU3482500A (en) 2000-08-29
EP1151549A1 (en) 2001-11-07
ATE239329T1 (de) 2003-05-15
US6556634B1 (en) 2003-04-29
CN1197266C (zh) 2005-04-13
WO2000048330A1 (en) 2000-08-17
DE60002438D1 (de) 2003-06-05

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B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 7A, 8A E 9A ANUIDADES

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: REFERENTE AO DESPACHO 8.6 NA RPI2003 DE 26/05/2009.