BRPI0512808A - computação eficiente de matrizes de filtro espacial para diversidade de transmissão de direcionamento em um sistema de comunicação mimo - Google Patents

computação eficiente de matrizes de filtro espacial para diversidade de transmissão de direcionamento em um sistema de comunicação mimo

Info

Publication number
BRPI0512808A
BRPI0512808A BRPI0512808-0A BRPI0512808A BRPI0512808A BR PI0512808 A BRPI0512808 A BR PI0512808A BR PI0512808 A BRPI0512808 A BR PI0512808A BR PI0512808 A BRPI0512808 A BR PI0512808A
Authority
BR
Brazil
Prior art keywords
matrix
spatial
filter
spatial filter
communication system
Prior art date
Application number
BRPI0512808-0A
Other languages
English (en)
Inventor
Mark S Wallace
Jay Rodney Walton
Steven J Howard
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34979956&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BRPI0512808(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of BRPI0512808A publication Critical patent/BRPI0512808A/pt
Publication of BRPI0512808B1 publication Critical patent/BRPI0512808B1/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
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • 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
    • 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
    • H04B7/08—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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • 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

Abstract

COMPUTAçãO EFICIENTE DE MATRIZES DE FILTRO ESPACIAL PARA DIVERSIDADE DE TRANSMISSãO DE DIRECIONAMENTO EM UM SISTEMA DE COMUNICAçãO MIMO. São descritas técnicas para computar eficientemente matrizes de filtro espacial. As matrizes de resposta de canal para um canal MIMO podem estar altamente correlacionadas caso o canal seja relativamente estático dentro de uma faixa de durações de transmissão. Em tal caso, pode ser derivada uma matriz espacial inicial de filtro com base em uma matriz de resposta de canal e uma matriz de filtro espacial para cada duração de transmissão pode ser computada com base na matriz espacial inicial de filtro e em uma matriz de direcionamento usada para tal duração de transmissão. As matrizes de resposta de canal podem ser parcialmente correlacionadas caso o canal MIMO não seja estático, porém não mude abruptamente. Em tal caso, pode ser derivada uma matriz de filtro espacial para matriz espacial inicial de filtro para outra duração de transmissão m . Uma matriz de filtro espacial para a duração de transmissão m pode ser computada com base na matriz espacial inicial de filtro, usando por exemplo um procedimento interativo.
BRPI0512808A 2004-06-30 2005-06-27 computação eficiente de matrizes de filtro espacial para diversidade de transmissão de direcionamento em um sistema de comunicação mimo BRPI0512808B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/882,491 US7110463B2 (en) 2004-06-30 2004-06-30 Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system
PCT/US2005/022840 WO2006004706A1 (en) 2004-06-30 2005-06-27 Efficient computation of spatial filter matrices for steering transmit diversity in a mimo communication system

Publications (2)

Publication Number Publication Date
BRPI0512808A true BRPI0512808A (pt) 2008-04-08
BRPI0512808B1 BRPI0512808B1 (pt) 2018-10-09

Family

ID=34979956

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0512808A BRPI0512808B1 (pt) 2004-06-30 2005-06-27 computação eficiente de matrizes de filtro espacial para diversidade de transmissão de direcionamento em um sistema de comunicação mimo

Country Status (15)

Country Link
US (2) US7110463B2 (pt)
EP (1) EP1766807B1 (pt)
JP (3) JP4833969B2 (pt)
KR (1) KR100887199B1 (pt)
CN (1) CN101010890B (pt)
AU (2) AU2005260035C1 (pt)
BR (1) BRPI0512808B1 (pt)
CA (2) CA2572591C (pt)
ES (1) ES2427934T3 (pt)
IL (1) IL180340A0 (pt)
MX (1) MX2007000268A (pt)
MY (1) MY139975A (pt)
RU (1) RU2363101C2 (pt)
TW (2) TWI451710B (pt)
WO (1) WO2006004706A1 (pt)

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EP1766807B1 (en) 2013-06-19
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