BR0209807A - Sistema e método para predição de sinal recebido em um sistema de comunicações sem fio - Google Patents

Sistema e método para predição de sinal recebido em um sistema de comunicações sem fio

Info

Publication number
BR0209807A
BR0209807A BR0209807-5A BR0209807A BR0209807A BR 0209807 A BR0209807 A BR 0209807A BR 0209807 A BR0209807 A BR 0209807A BR 0209807 A BR0209807 A BR 0209807A
Authority
BR
Brazil
Prior art keywords
signal
weights
mmse
approach
wireless communications
Prior art date
Application number
BR0209807-5A
Other languages
English (en)
Inventor
John Edward Smee
Nagabhushana Sindhushayana
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BR0209807A publication Critical patent/BR0209807A/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
    • 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
    • H04B7/0848—Joint weighting
    • 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
    • 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
    • H04B1/71055—Joint detection techniques, e.g. linear detectors using minimum mean squared error [MMSE] detector
    • 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
    • H04B7/0848—Joint weighting
    • H04B7/0851—Joint weighting using training sequences or error signal
    • 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
    • H04B7/0848—Joint weighting
    • H04B7/0854—Joint weighting using error minimizing algorithms, e.g. minimum mean squared error [MMSE], "cross-correlation" or matrix inversion
    • 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
    • H04B7/0848—Joint weighting
    • H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

"SISTEMA E MéTODO PARA PREDIçãO DE SINAL RECEBIDO EM UM SISTEMA DE COMUNICAçõES SEM FIO". São descritos um método e um equipamento para computar os coeficientes de combinador para sistemas de comunicação sem fio para uma solução espaço - tempo. Uma modalidade treina -os pesos sobre um sinal conhecido a priori que é multiplexado temporalmente com outros sinais, tais como um sinal piloto em um sistema de alta taxa de dados (HDR) , em que o sinal é transmitido com potência total. é aplicada uma estratégia de minimizar o erro médio quadrático, MMSE, permitindo a combinação de pesos em uma base por trajetória. Os pesos são calculados como uma função de uma matriz de correlação de ruído e assinatura espacial por trajetória. A matriz de correlação de ruído é determinada a partir de uma matriz de auto-correlação do sinal recebido. Em uma modalidade, a estratégia MMSE é aplicada de modo a constituir um sinal piloto não temporalmente 'gateado' (gated).
BR0209807-5A 2001-05-17 2002-05-17 Sistema e método para predição de sinal recebido em um sistema de comunicações sem fio BR0209807A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/860,707 US6990137B2 (en) 2001-05-17 2001-05-17 System and method for received signal prediction in wireless communications systems
PCT/US2002/015583 WO2003061380A2 (en) 2001-05-17 2002-05-17 System and method for received signal prediction in wireless communications system

Publications (1)

Publication Number Publication Date
BR0209807A true BR0209807A (pt) 2006-02-07

Family

ID=25333835

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0209807-5A BR0209807A (pt) 2001-05-17 2002-05-17 Sistema e método para predição de sinal recebido em um sistema de comunicações sem fio

Country Status (11)

Country Link
US (2) US6990137B2 (pt)
EP (1) EP1404175B1 (pt)
JP (3) JP2005515738A (pt)
KR (2) KR100945100B1 (pt)
CN (4) CN101383633B (pt)
AT (1) ATE472195T1 (pt)
AU (1) AU2002365239A1 (pt)
BR (1) BR0209807A (pt)
DE (1) DE60236797D1 (pt)
TW (1) TW564608B (pt)
WO (1) WO2003061380A2 (pt)

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DE60236797D1 (de) 2010-08-05
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ATE472195T1 (de) 2010-07-15
JP2009260968A (ja) 2009-11-05
CN1921325B (zh) 2011-08-10
EP1404175B1 (en) 2010-06-23
KR100945100B1 (ko) 2010-03-02
AU2002365239A1 (en) 2003-09-02
JP2005515738A (ja) 2005-05-26
CN101383633A (zh) 2009-03-11
JP5575859B2 (ja) 2014-08-20
US7433384B2 (en) 2008-10-07
CN101494472A (zh) 2009-07-29
WO2003061380A3 (en) 2003-10-09
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US6990137B2 (en) 2006-01-24
JP2013062817A (ja) 2013-04-04
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CN101494472B (zh) 2014-08-20
US20060120439A1 (en) 2006-06-08
CN101383633B (zh) 2016-05-25
WO2003061380A2 (en) 2003-07-31
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US20030031234A1 (en) 2003-02-13

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