BRPI0507767A - diversidade de transmissão e espalhamento espacial para um sistema de comunicação de múltiplas antenas com base em ofdm - Google Patents

diversidade de transmissão e espalhamento espacial para um sistema de comunicação de múltiplas antenas com base em ofdm

Info

Publication number
BRPI0507767A
BRPI0507767A BRPI0507767-2A BRPI0507767A BRPI0507767A BR PI0507767 A BRPI0507767 A BR PI0507767A BR PI0507767 A BRPI0507767 A BR PI0507767A BR PI0507767 A BRPI0507767 A BR PI0507767A
Authority
BR
Brazil
Prior art keywords
transmission
subbands
transmission diversity
targeting vectors
entity
Prior art date
Application number
BRPI0507767-2A
Other languages
English (en)
Inventor
Jay Rodney Walton
John W Ketchum
Mark S Wallace
Steven J Howard
Sanjiv Nanda
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 BRPI0507767A publication Critical patent/BRPI0507767A/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
    • H04B7/0697—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
    • H04B7/0413—MIMO 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
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam 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
    • 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
    • H04B7/0617—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 for beam forming
    • 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
    • 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
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • 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
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Landscapes

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

Abstract

DIVERSIDADE DE TRANSMISSãO E ESPALHAMENTO ESPACIAL PARA UM SISTEMA DE COMUNICAçãO DE MúLTIPLAS ANTENAS COM BASE EM OFDM Uma entidade de transmissão de múltiplas antenas transmite dados para uma entidade receptora de única - ou de múltiplas antenas utilizando (1) um modo direcionado para orientar a transmissão de dados para a entidade de recepção ou (2) um modo pseudo-aleatório de transmissão direcionada (PRTS) para tornar aleatória os canais efetivos observados pela transmissão de dados através das sub-bandas. O modo PRTS pode ser utilizado para se alcançar a diversidade de transmissão ou espalhamento espacial. Para diversidade de transmissão, a entidade de transmissão utiliza diferentes vetores de direcionamento pseudo-aleatórios através das sub-bandas mas o mesmo vetor de direcionamento através de todo um pacote para cada sub-banda. A entidade de recepção não precisa ter conhecimento dos vetores de direcionamento pseudo-aleatórios ou realizar qualquer processamento especial. Para o espalhamento espacial, a entidade de transmissão utiliza diferentes vetores de direcionamento pseudo-aleatórios através das sub-bandas e diferentes vetores de direcionamento através do pacote para cada sub-banda. Apenas as entidades de transmissão e recepção conhecem os vetores de direcionamento utilizados para a transmissão de dados.
BRPI0507767-2A 2004-02-18 2005-02-18 diversidade de transmissão e espalhamento espacial para um sistema de comunicação de múltiplas antenas com base em ofdm BRPI0507767A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/781,951 US20050180312A1 (en) 2004-02-18 2004-02-18 Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system
PCT/US2005/005261 WO2005081445A1 (en) 2004-02-18 2005-02-18 Transmit diversity and spatial spreading for an ofdm-based multi-antenna communication system

Publications (1)

Publication Number Publication Date
BRPI0507767A true BRPI0507767A (pt) 2007-07-10

Family

ID=34838774

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0507767-2A BRPI0507767A (pt) 2004-02-18 2005-02-18 diversidade de transmissão e espalhamento espacial para um sistema de comunicação de múltiplas antenas com base em ofdm

Country Status (12)

Country Link
US (1) US20050180312A1 (pt)
EP (1) EP1716656A1 (pt)
JP (2) JP5053647B2 (pt)
KR (1) KR100855481B1 (pt)
CN (1) CN1943156B (pt)
AU (2) AU2005214778A1 (pt)
BR (1) BRPI0507767A (pt)
CA (3) CA2747374C (pt)
IL (1) IL177532A0 (pt)
RU (1) RU2350013C2 (pt)
TW (1) TWI394397B (pt)
WO (1) WO2005081445A1 (pt)

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CA2556708A1 (en) 2005-09-01
CA2556708C (en) 2012-10-02
RU2006133289A (ru) 2008-03-27
JP5053647B2 (ja) 2012-10-17
KR100855481B1 (ko) 2008-09-01
IL177532A0 (en) 2006-12-10
RU2350013C2 (ru) 2009-03-20
CA2747374A1 (en) 2005-09-01
US20050180312A1 (en) 2005-08-18
AU2005214778A1 (en) 2005-09-01
CN1943156B (zh) 2012-02-15
AU2009202224A1 (en) 2009-06-25
CA2747374C (en) 2014-03-11
CA2747273A1 (en) 2005-09-01
KR20060123629A (ko) 2006-12-01
CN1943156A (zh) 2007-04-04
JP2010063097A (ja) 2010-03-18
JP5199202B2 (ja) 2013-05-15
EP1716656A1 (en) 2006-11-02
CA2747273C (en) 2014-03-11
TWI394397B (zh) 2013-04-21
WO2005081445A1 (en) 2005-09-01
TW200603565A (en) 2006-01-16
JP2007523569A (ja) 2007-08-16

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