Title:
ビーム形成のために必要なチャネル状態情報を取得する方法と装置
Document Type and Number:
Japanese Patent JP5303010
Kind Code:
B2
Abstract:
The present invention provides a method for obtaining channel state information required for beamforming, comprising: estimating current channel state information according to a received signal; predicting future channel state information which is expected to be used by a transmitter in the next beamforming based on the current channel state information and historical channel state information; reading previous channel state information used by the transmitter in the current beamforming; determining feedback information based on the future channel state information and the previous channel state information; and sending the feedback information to the transmitter. The present invention further provides a method for performing beamforming, comprising: receiving feedback information from a receiver; reading previous channel state information used in the last beamforming; reconstructing channel state information based on the feedback information and the previous channel state information; and performing beamforming according to the reconstructed channel state information.
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Inventors:
Chang Yu
Yeah
Lai Mei
Yeah
Lai Mei
Application Number:
JP2011164147A
Publication Date:
October 02, 2013
Filing Date:
July 27, 2011
Export Citation:
Assignee:
NEC(China)Co.,Ltd.
International Classes:
H04B7/10; H04B7/06; H04J99/00; H04W16/28; H04W24/10
Domestic Patent References:
| JP2003143065A | ||||
| JP2009526480A |
Attorney, Agent or Firm:
Masao Matsumoto