MY154092A - Feedback method for performing a feedback by using a codebook in mimo system - Google Patents

Feedback method for performing a feedback by using a codebook in mimo system

Info

Publication number
MY154092A
MY154092A MYPI2010004346A MYPI20104346A MY154092A MY 154092 A MY154092 A MY 154092A MY PI2010004346 A MYPI2010004346 A MY PI2010004346A MY PI20104346 A MYPI20104346 A MY PI20104346A MY 154092 A MY154092 A MY 154092A
Authority
MY
Malaysia
Prior art keywords
codebook
feedback
mimo
mimo system
feedback information
Prior art date
Application number
MYPI2010004346A
Other languages
English (en)
Inventor
Lee Wook Bong
Chun Jin Young
Park Sung Ho
Lee Moon Il
Ko Hyun Soo
Ihm Bin Chul
Original Assignee
Lg Electronics 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 Lg Electronics Inc filed Critical Lg Electronics Inc
Publication of MY154092A publication Critical patent/MY154092A/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
    • 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
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user 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
    • H04B7/06—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
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • 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
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • 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
    • H04B7/0636—Feedback format
    • H04B7/0645—Variable feedback
    • H04B7/065—Variable contents, e.g. long-term or short-short
    • 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
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
MYPI2010004346A 2008-04-07 2009-04-06 Feedback method for performing a feedback by using a codebook in mimo system MY154092A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US4277808P 2008-04-07 2008-04-07
US5059108P 2008-05-05 2008-05-05
US7413208P 2008-06-19 2008-06-19
KR1020080081244A KR101537591B1 (ko) 2008-04-07 2008-08-20 Ｍｉｍｏ 시스템에서 모드 적응 방법
US15116109P 2009-02-09 2009-02-09

Publications (1)

Publication Number Publication Date
MY154092A true MY154092A (en) 2015-04-30

Family

ID=41162048

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2010004346A MY154092A (en) 2008-04-07 2009-04-06 Feedback method for performing a feedback by using a codebook in mimo system

Country Status (7)

Country Link
US (4) US8111662B2 (https=)
EP (3) EP2248278B1 (https=)
JP (3) JP5427878B2 (https=)
KR (1) KR101537591B1 (https=)
CN (3) CN101981823B (https=)
MY (1) MY154092A (https=)
WO (3) WO2009125954A1 (https=)

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Also Published As

Publication number Publication date
KR20090106975A (ko) 2009-10-12
WO2009125956A1 (en) 2009-10-15
JP2011518491A (ja) 2011-06-23
US8111662B2 (en) 2012-02-07
WO2009125954A1 (en) 2009-10-15
EP2248277A1 (en) 2010-11-10
CN101981823B (zh) 2015-07-08
EP2245758A1 (en) 2010-11-03
EP2248278B1 (en) 2016-08-31
EP2245758A4 (en) 2014-05-07
US20090268698A1 (en) 2009-10-29
US8045528B2 (en) 2011-10-25
JP5567550B2 (ja) 2014-08-06
US20090257383A1 (en) 2009-10-15
JP2011517524A (ja) 2011-06-09
US20120008613A1 (en) 2012-01-12
CN101981823A (zh) 2011-02-23
CN101981824B (zh) 2014-04-02
WO2009125955A1 (en) 2009-10-15
JP5427878B2 (ja) 2014-02-26
CN101981825A (zh) 2011-02-23
EP2248278A4 (en) 2014-05-07
EP2248278A1 (en) 2010-11-10
JP2011518492A (ja) 2011-06-23
US8811355B2 (en) 2014-08-19
US20090257384A1 (en) 2009-10-15
CN101981824A (zh) 2011-02-23
KR101537591B1 (ko) 2015-07-20
EP2248277A4 (en) 2014-05-07

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