BR0114769A - Método e equipamento para estimativa de canal de classificação reduzida em um sistema de comunicações - Google Patents

Método e equipamento para estimativa de canal de classificação reduzida em um sistema de comunicações

Info

Publication number
BR0114769A
BR0114769A BR0114769-2A BR0114769A BR0114769A BR 0114769 A BR0114769 A BR 0114769A BR 0114769 A BR0114769 A BR 0114769A BR 0114769 A BR0114769 A BR 0114769A
Authority
BR
Brazil
Prior art keywords
equipment
channel estimation
reduced
estimation
downgrading
Prior art date
Application number
BR0114769-2A
Other languages
English (en)
Inventor
Josef J Blanz
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 BR0114769A publication Critical patent/BR0114769A/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
    • H04B7/10—Polarisation diversity; Directional diversity
    • 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
    • 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
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
    • H04L25/0248—Eigen-space methods

Abstract

"MéTODO E EQUIPAMENTO PARA ESTIMATIVA DE CANAL DE CLASSIFICAçãO REDUZIDA EM UM SISTEMA DE COMUNICAçõES". Um método e um equipamento para estimar um canal de comunicação (14) em um sistema de comunicação sem fio (10) possuindo múltiplas antenas transmissoras (12) usando estimativa de classificação reduzida. O método explora o conhecimento redundante e/ou a priori dentro de um sistema para simplificar os cálculos de estimativa. Em uma modalidade, é calculada (44) e analisada (46) uma matriz de covariância para determinar se os parâmetros do canal podem ser reduzidos para a estimativa do canal. Caso não possam, são usados todos os parâmetros (50), caso contrário é usada uma matriz de classificação reduzida (54) para o cálculo.
BR0114769-2A 2000-10-23 2001-10-19 Método e equipamento para estimativa de canal de classificação reduzida em um sistema de comunicações BR0114769A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/694,432 US6907270B1 (en) 2000-10-23 2000-10-23 Method and apparatus for reduced rank channel estimation in a communications system
PCT/US2001/050068 WO2002060138A2 (en) 2000-10-23 2001-10-19 Method and apparatus for producing a channel estimate with reduced rank

Publications (1)

Publication Number Publication Date
BR0114769A true BR0114769A (pt) 2004-06-15

Family

ID=24788795

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0114769-2A BR0114769A (pt) 2000-10-23 2001-10-19 Método e equipamento para estimativa de canal de classificação reduzida em um sistema de comunicações

Country Status (13)

Country Link
US (1) US6907270B1 (pt)
EP (1) EP1329069A2 (pt)
JP (1) JP4508529B2 (pt)
KR (1) KR100810180B1 (pt)
CN (1) CN1471779A (pt)
BR (1) BR0114769A (pt)
CA (1) CA2426650A1 (pt)
IL (1) IL155532A0 (pt)
MX (1) MXPA03003564A (pt)
NO (1) NO20031780L (pt)
RU (1) RU2292655C2 (pt)
TW (1) TW533714B (pt)
WO (1) WO2002060138A2 (pt)

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Also Published As

Publication number Publication date
JP2004521539A (ja) 2004-07-15
TW533714B (en) 2003-05-21
MXPA03003564A (es) 2003-10-06
EP1329069A2 (en) 2003-07-23
US6907270B1 (en) 2005-06-14
RU2292655C2 (ru) 2007-01-27
NO20031780D0 (no) 2003-04-22
NO20031780L (no) 2003-06-20
KR20030044025A (ko) 2003-06-02
IL155532A0 (en) 2003-11-23
WO2002060138A2 (en) 2002-08-01
CN1471779A (zh) 2004-01-28
WO2002060138A3 (en) 2003-04-10
JP4508529B2 (ja) 2010-07-21
KR100810180B1 (ko) 2008-03-06
CA2426650A1 (en) 2002-08-01

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