Title:
CONTROL METHOD AND CONTROL MEANS FOR RATE AND POWER OF SUBCHANNEL PER SPACE
Document Type and Number:
WIPO Patent Application WO/2008/098442
Kind Code:
A1
Abstract:
A control method and control means for rate and power of subchannel per space are disclosed. The method includes: the receiver determines selected modulation and coding mode for every space subchannel based on channel status information on receiver side; the receiver informs the transmitter about the selected modulation and coding mode in the form of index; the transmitter performs pre-coding based on the statistic value of channel status information and modulation and coding mode of subchannel. Because the present invention only feedbacks the index, and does not need to feedback channel status information in real time, bandwidth requirementof feedback information is reduced. And present invention uses statistic information of channel status information, such as mean, variance or related matrix parameter, to pre-code, therefore, sensitivity of the pre-coding system performance to channel status information error is reduced.
Inventors:
LIU YUNHUI (CN)
ZHANG XIAOLIN (CN)
ZHANG XIAOLIN (CN)
Application Number:
PCT/CN2007/003148
Publication Date:
August 21, 2008
Filing Date:
November 06, 2007
Export Citation:
Assignee:
BEIJING LENOVO SOFTWARE LTD (CN)
LENOVO BEIJING LTD (CN)
LIU YUNHUI (CN)
ZHANG XIAOLIN (CN)
LENOVO BEIJING LTD (CN)
LIU YUNHUI (CN)
ZHANG XIAOLIN (CN)
International Classes:
H04B7/06; H04W52/42
Foreign References:
| CN1521959A | 2004-08-18 | |||
| CN1469662A | 2004-01-21 | |||
| CN1780278A | 2006-05-31 |
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (Building BTsinghua Tongfang Hi-Tech Plaza,No. 1, Wangzhuang Road,Haidian District, Beijing 3, CN)
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