AT491269T - A method for determining transmit weights - Google Patents

A method for determining transmit weights

Info

Publication number
AT491269T
AT491269T AT03783024T AT03783024T AT491269T AT 491269 T AT491269 T AT 491269T AT 03783024 T AT03783024 T AT 03783024T AT 03783024 T AT03783024 T AT 03783024T AT 491269 T AT491269 T AT 491269T
Authority
AT
Austria
Prior art keywords
method
transmit weights
determining transmit
determining
weights
Prior art date
Application number
AT03783024T
Other languages
German (de)
Inventor
David Astely
Peter Larsson
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to PCT/SE2003/002071 priority Critical patent/WO2005062496A1/en
Publication of AT491269T publication Critical patent/AT491269T/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity 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
    • H04B7/0615Diversity 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
    • H04B7/0619Diversity 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
    • H04B7/0621Feedback content
    • H04B7/0632Channel quality parameters, e.g. channel quality indicator [CQI]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity 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
    • H04B7/0615Diversity 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
    • H04B7/0617Diversity 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026Transmission of channel quality indication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2626Arrangements specific to the transmitter
AT03783024T 2003-12-22 2003-12-22 A method for determining transmit weights AT491269T (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SE2003/002071 WO2005062496A1 (en) 2003-12-22 2003-12-22 A method for determining transmit weights

Publications (1)

Publication Number Publication Date
AT491269T true AT491269T (en) 2010-12-15

Family

ID=34709479

Family Applications (1)

Application Number Title Priority Date Filing Date
AT03783024T AT491269T (en) 2003-12-22 2003-12-22 A method for determining transmit weights

Country Status (9)

Country Link
US (1) US7406336B2 (en)
EP (1) EP1700397B1 (en)
JP (1) JP4435737B2 (en)
CN (1) CN1886915B (en)
AT (1) AT491269T (en)
AU (1) AU2003290487A1 (en)
DE (1) DE60335305D1 (en)
TW (1) TW200537835A (en)
WO (1) WO2005062496A1 (en)

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Also Published As

Publication number Publication date
TW200537835A (en) 2005-11-16
AU2003290487A1 (en) 2005-07-14
US20070099666A1 (en) 2007-05-03
WO2005062496A1 (en) 2005-07-07
DE60335305D1 (en) 2011-01-20
CN1886915B (en) 2010-06-09
JP4435737B2 (en) 2010-03-24
JP2007521708A (en) 2007-08-02
EP1700397B1 (en) 2010-12-08
US7406336B2 (en) 2008-07-29
CN1886915A (en) 2006-12-27
EP1700397A1 (en) 2006-09-13

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Legal Events

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