BR0103224A - Sistemas de comunicação sem fio que utilizam múltiplas antenas no transmissor e múltiplas antenas no receptor - Google Patents

Sistemas de comunicação sem fio que utilizam múltiplas antenas no transmissor e múltiplas antenas no receptor

Info

Publication number
BR0103224A
BR0103224A BR0103224-0A BR0103224A BR0103224A BR 0103224 A BR0103224 A BR 0103224A BR 0103224 A BR0103224 A BR 0103224A BR 0103224 A BR0103224 A BR 0103224A
Authority
BR
Brazil
Prior art keywords
antennas
transmitter
multiple antennas
receiver
subflows
Prior art date
Application number
BR0103224-0A
Other languages
English (en)
Inventor
Angel Lozano
Reinaldo A Valenzuela
Farrokh Rashid-Farrokhi
Original Assignee
Lucent Technologies 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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of BR0103224A publication Critical patent/BR0103224A/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
    • H04B7/06—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
    • H04B7/0615—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 weighted versions of same signal
    • H04B7/0619—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 weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0634—Antenna weights or vector/matrix coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • 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
    • H04B7/0615—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 weighted versions of same signal
    • H04B7/0619—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 weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • H04B7/0615—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 weighted versions of same signal
    • H04B7/0619—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 weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0645—Variable feedback
    • H04B7/065—Variable contents, e.g. long-term or short-short
    • 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
    • H04B7/0697—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 spatial multiplexing
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Power Engineering (AREA)
  • Quality & Reliability (AREA)
  • Electromagnetism (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

"SISTEMAS DE COMUNICAçãO SEM FIO QUE UTILIZAM MúLTIPLAS ANTENAS NO TRANSMISSOR E MúLTTPLAS ANTENAS NO RECEPTOR". São desenvolvidos sinais para utilização em um sistema sem fio com múltiplas antenas de transmissão e múltiplas antenas de recepção de modo que mesmo em face de alguma correlação a capacidade mais laço aberta que pode ser atingida utilizando um sistema substancialmente de laço aberto com um canal daquele nivel de correlação é obtido. De acordo com os princípios da invenção, os sinais transmitidos das várias antenas são processados de modo a melhorar sua capacidade de portar a quantidade máxima de informação. Mais especificamente, os dados a serem transmitidos são divididos em M+1 subfluxos, em que M é o número de antenas de transmissão. Cada antena de transmissão é fornecida com um sinal de combinação que é composto de uma versão ponderada de um dos subfluxos comuns e uma versão ponderada de um dos respectivos subfluxos que é singularmente fornecido para aquela antena, de modo que há M sinais de transmissão. Um receptor tendo N antenas recebe os M sinais de transmissão como combinados pelo canal e reconstitui deles os dados originais. Isto pode ser atingido utilizando técnicas de descodificação sucessivas. Como vantagem, a capacidade, isto é, a velocidade de informação que pode ser passada com uma probabilidade arbitrariamente pequena de erro quando a condição de canal de emissão instantâneo é desconhecida do transmissor, é maximizada.
BR0103224-0A 2000-08-18 2001-08-06 Sistemas de comunicação sem fio que utilizam múltiplas antenas no transmissor e múltiplas antenas no receptor BR0103224A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/641,414 US6778612B1 (en) 2000-08-18 2000-08-18 Space-time processing for wireless systems with multiple transmit and receive antennas

Publications (1)

Publication Number Publication Date
BR0103224A true BR0103224A (pt) 2002-04-02

Family

ID=24572266

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0103224-0A BR0103224A (pt) 2000-08-18 2001-08-06 Sistemas de comunicação sem fio que utilizam múltiplas antenas no transmissor e múltiplas antenas no receptor

Country Status (10)

Country Link
US (2) US6778612B1 (pt)
EP (1) EP1187363B1 (pt)
JP (1) JP5366345B2 (pt)
KR (1) KR100811577B1 (pt)
CN (1) CN1233106C (pt)
AT (1) ATE271284T1 (pt)
AU (1) AU5799301A (pt)
BR (1) BR0103224A (pt)
CA (1) CA2350878C (pt)
DE (1) DE60104252T2 (pt)

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Also Published As

Publication number Publication date
CA2350878C (en) 2005-01-04
DE60104252T2 (de) 2005-09-08
CN1339881A (zh) 2002-03-13
US6778612B1 (en) 2004-08-17
CN1233106C (zh) 2005-12-21
JP2002124899A (ja) 2002-04-26
EP1187363A1 (en) 2002-03-13
EP1187363B1 (en) 2004-07-14
DE60104252D1 (de) 2004-08-19
US7113558B2 (en) 2006-09-26
KR20020014774A (ko) 2002-02-25
AU5799301A (en) 2002-02-21
JP5366345B2 (ja) 2013-12-11
ATE271284T1 (de) 2004-07-15
CA2350878A1 (en) 2002-02-18
KR100811577B1 (ko) 2008-03-10
US20040208258A1 (en) 2004-10-21

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