WO2005020441A3 - System implementing closed loop transmit diversity and method thereof - Google Patents

System implementing closed loop transmit diversity and method thereof Download PDF

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Publication number
WO2005020441A3
WO2005020441A3 PCT/US2003/015090 US0315090W WO2005020441A3 WO 2005020441 A3 WO2005020441 A3 WO 2005020441A3 US 0315090 W US0315090 W US 0315090W WO 2005020441 A3 WO2005020441 A3 WO 2005020441A3
Authority
WO
WIPO (PCT)
Prior art keywords
closed loop
symbol
transmit diversity
loop transmit
time period
Prior art date
Application number
PCT/US2003/015090
Other languages
French (fr)
Other versions
WO2005020441A2 (en
Inventor
Robert Mark Harrison
Mansoor Ahmed
Richard Tonge
Nick Whinnett
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Priority to EP03817480.1A priority Critical patent/EP1552623B1/en
Priority to AU2003304634A priority patent/AU2003304634A1/en
Priority to JP2005508229A priority patent/JP2006516076A/en
Publication of WO2005020441A2 publication Critical patent/WO2005020441A2/en
Publication of WO2005020441A3 publication Critical patent/WO2005020441A3/en

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
    • 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
    • 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
    • H04B7/0652—Feedback error handling
    • H04B7/0656—Feedback error handling at the transmitter, e.g. error detection at base station
    • 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

Abstract

A method (500) of and apparatus (400) for adapting an antenna array for closed loop transmit diversity, the method comprising: receiving (503) an adapting signal corresponding to an antenna array weighting pattern for a time period; demodulating (505) the adapting signal to provide a symbol for the time period; determining (507) a preferred symbol from the symbol for the time period and a previous symbol for a previous time period; and transmitting (515) with an antenna array weighting pattern corresponding to the preferred symbol.
PCT/US2003/015090 2002-06-27 2003-05-13 System implementing closed loop transmit diversity and method thereof WO2005020441A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP03817480.1A EP1552623B1 (en) 2002-06-27 2003-05-13 System implementing closed loop transmit diversity and method thereof
AU2003304634A AU2003304634A1 (en) 2002-06-27 2003-05-13 System implementing closed loop transmit diversity and method thereof
JP2005508229A JP2006516076A (en) 2002-06-27 2003-05-13 Apparatus and method for implementing closed-loop transmit diversity

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/183,292 US7010055B2 (en) 2002-06-27 2002-06-27 System implementing closed loop transmit diversity and method thereof
US10/183,292 2002-06-27

Publications (2)

Publication Number Publication Date
WO2005020441A2 WO2005020441A2 (en) 2005-03-03
WO2005020441A3 true WO2005020441A3 (en) 2005-04-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/015090 WO2005020441A2 (en) 2002-06-27 2003-05-13 System implementing closed loop transmit diversity and method thereof

Country Status (7)

Country Link
US (1) US7010055B2 (en)
EP (1) EP1552623B1 (en)
JP (2) JP2006516076A (en)
KR (1) KR100677180B1 (en)
CN (1) CN100442682C (en)
AU (1) AU2003304634A1 (en)
WO (1) WO2005020441A2 (en)

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Also Published As

Publication number Publication date
EP1552623A2 (en) 2005-07-13
WO2005020441A2 (en) 2005-03-03
JP2006516076A (en) 2006-06-15
KR100677180B1 (en) 2007-02-02
KR20060027297A (en) 2006-03-27
JP4944914B2 (en) 2012-06-06
CN100442682C (en) 2008-12-10
US20040001556A1 (en) 2004-01-01
CN1692570A (en) 2005-11-02
US7010055B2 (en) 2006-03-07
EP1552623A4 (en) 2009-04-29
EP1552623B1 (en) 2017-10-11
AU2003304634A8 (en) 2005-03-10
JP2009171598A (en) 2009-07-30
AU2003304634A1 (en) 2005-03-10

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