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BR9908389A - Decodificação de sinais codificados de espaço-tempo para comunicação sem fio - Google Patents

Decodificação de sinais codificados de espaço-tempo para comunicação sem fio

Info

Publication number
BR9908389A
BR9908389A BR9908389-2A BR9908389A BR9908389A BR 9908389 A BR9908389 A BR 9908389A BR 9908389 A BR9908389 A BR 9908389A BR 9908389 A BR9908389 A BR 9908389A
Authority
BR
Brazil
Prior art keywords
transmitting
antennas
wireless communication
sym
decoding
Prior art date
Application number
BR9908389-2A
Other languages
English (en)
Inventor
Arthur R Calderbank
Hamid Jafarkhani
Ayaman F Naguib
Nambirajam Seshadri
Vahid Tarokh
Original Assignee
At & T 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
Priority claimed from US09/186,907 external-priority patent/US6088408A/en
Application filed by At & T Corp filed Critical At & T Corp
Publication of BR9908389A publication Critical patent/BR9908389A/pt

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0669—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different channel coding between antennas
    • 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
    • H04B7/0845—Weighted combining per branch equalization, e.g. by an FIR-filter or RAKE receiver per antenna branch

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

<B>DECODIFICAçãO DE SINAIS CODIFICADOS DE ESPAçO-TEMPO PARA COMUNICAçãO SEM FIO<D> As instruções da técnica anterior para a codificação de sinais e a sua transmissão através de uma multiplicidade de antenas são aperfeiçoadas pelo processo descrito para a codificação de qualquer número de antenas de transmissão. Também descrita é uma abordagem generalizada para a decodificação de probabilidade máxima em que uma regra de decisão é formada para todas as antenas que estão transmitindo de um transmissor, e uma decisão é tomada a favor dos símbolos transmitidos para reduzir ao mínimo a equação c~ i~ = arg min | R~ i~ - c|² + (-1 + <sym> | h~ i,j~ |² ) | c |² na qual r~ t~^ j^ é o sinal recebido no intervalo de tempo t, na antena de recepção j, h*~ <sym>t(i)j~ é o conjugado complexo da função de transferência de canal entre a antena de transmissor que está transmitindo o símbolo c~ i~ e a antena receptora j, e <sym>~ t~(i) é a indicação do símbolo c~ i~ no intervalo de tempo t.
BR9908389-2A 1998-03-03 1999-02-26 Decodificação de sinais codificados de espaço-tempo para comunicação sem fio BR9908389A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US7661398P 1998-03-03 1998-03-03
US09/186,907 US6088408A (en) 1998-11-06 1998-11-06 Decoding for generalized orthogonal designs for space-time codes for wireless communication
PCT/US1999/004187 WO1999045657A1 (en) 1998-03-03 1999-02-26 Decoding of space-time coded signals for wireless communication

Publications (1)

Publication Number Publication Date
BR9908389A true BR9908389A (pt) 2000-10-31

Family

ID=26758288

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9908389-2A BR9908389A (pt) 1998-03-03 1999-02-26 Decodificação de sinais codificados de espaço-tempo para comunicação sem fio

Country Status (8)

Country Link
EP (2) EP1060575B1 (pt)
JP (1) JP4245802B2 (pt)
KR (1) KR100684483B1 (pt)
CN (1) CN1292175A (pt)
BR (1) BR9908389A (pt)
CA (1) CA2321618C (pt)
DE (1) DE69936044T2 (pt)
WO (1) WO1999045657A1 (pt)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI19992829A7 (fi) 1999-12-30 2001-07-01 Nokia Networks Oy Datan lähetys radiojärjestelmässä lähettimeltä vastaanottimelle
EP1152548A1 (en) 2000-05-05 2001-11-07 Lucent Technologies Inc. Increased data communication capacity of a high rate wireless network
US7068628B2 (en) 2000-05-22 2006-06-27 At&T Corp. MIMO OFDM system
US6654928B1 (en) 2000-07-20 2003-11-25 Nokia Mobile Phones Limited Hybrid dimensional, spherical space-time coding and decoding apparatus, and associated method, for a communication system
AU2002346266A1 (en) * 2002-06-07 2003-12-22 Linkair Communications, Inc. A method and apparatus of spread space-time block coding
JP4331563B2 (ja) * 2002-10-10 2009-09-16 三星電子株式会社 空間−時間ブロック符号を用いて送信アンテナダイバシティを支援する送受信装置
KR100630108B1 (ko) 2002-10-10 2006-09-27 삼성전자주식회사 공간-시간 블럭부호를 사용하여 송신 안테나 다이버시티를지원하는 송수신 장치
KR100640349B1 (ko) * 2003-01-02 2006-10-30 삼성전자주식회사 3개의 송신 안테나들을 가지는 무선통신 시스템을 위한송수신 장치
KR100557085B1 (ko) * 2003-01-09 2006-03-03 삼성전자주식회사 적어도 3개의 송신 안테나들을 사용하는 무선통신시스템의 수신 장치
KR100605860B1 (ko) * 2003-01-09 2006-07-31 삼성전자주식회사 4개의 송신 안테나를 사용하는 무선통신 시스템의 송신 장치 및 방법
FR2854995B1 (fr) 2003-05-14 2005-07-29 Nortel Networks Ltd Modulateur et demodulateur a etalement de spectre
GB2406759B (en) * 2003-10-02 2006-06-07 Toshiba Res Europ Ltd Signal decoding methods and apparatus
GB2409384B (en) * 2003-12-18 2005-11-30 Toshiba Res Europ Ltd Maximum likelihood sequence estimation equaliser
CN100346578C (zh) * 2004-01-07 2007-10-31 北京邮电大学 空时连续相位调制编码器的实现方法
EP1768263B1 (en) 2004-05-26 2015-01-21 NEC Corporation Spatially-multiplexed signal detecting method and time space iterative decoder using same
FR2873878A1 (fr) 2004-08-02 2006-02-03 Nortel Networks Ltd Procede d'emission radio a diversite spatiale et emetteur radio mettant en oeuvre le procede
WO2008060177A1 (en) * 2006-11-14 2008-05-22 Intel Corporation Space-time decoder and methods for decoding alamouti-encoded signals in high-doppler environments

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5479448A (en) 1992-03-31 1995-12-26 At&T Corp. Method and apparatus for providing antenna diversity
US6185258B1 (en) * 1997-09-16 2001-02-06 At&T Wireless Services Inc. Transmitter diversity technique for wireless communications
US7422498B2 (en) 2004-04-19 2008-09-09 Burg Donald E Ship with wave engulfing enhanced propulsors

Also Published As

Publication number Publication date
DE69936044T2 (de) 2008-01-10
KR20010041534A (ko) 2001-05-25
EP2262123A2 (en) 2010-12-15
CA2321618A1 (en) 1999-09-10
CA2321618C (en) 2004-01-27
EP1060575A1 (en) 2000-12-20
KR100684483B1 (ko) 2007-02-22
EP2262123A3 (en) 2011-01-19
DE69936044D1 (de) 2007-06-21
JP4245802B2 (ja) 2009-04-02
WO1999045657A1 (en) 1999-09-10
JP2002506316A (ja) 2002-02-26
CN1292175A (zh) 2001-04-18
EP1060575B1 (en) 2007-05-09

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired