Title:
多重入出力無線通信システムにおける制限されたフィードフォワードのビーム形成を行うための装置及びその方法
Document Type and Number:
Japanese Patent JP4652430
Kind Code:
B2
Abstract:
An apparatus and method are provided for beamforming in a MIMO wireless communication system. A base station includes a first calculator that repeatedly calculates downlink beamforming vectors of the user terminals to calculate the optimal beamforming vectors for the user terminals, a quantizer that quantizes the downlink beamforming vectors in order to transmit information of the downlink beamforming vectors, a control channel transmitter that feeds forward information of the quantized downlink beamforming vectors to the user terminals, a second calculator that calculates the final downlink beamforming vectors of the user terminals, and a beamforming transmitter that sums the beamformed TX signals of the user terminals and transmits the summed TX signals through a plurality of TX antennas.
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Inventors:
Huang Jin-soo
Species Hyun
David Mazzarese
Robert Heath Jr.
Cai
Species Hyun
David Mazzarese
Robert Heath Jr.
Cai
Application Number:
JP2008141720A
Publication Date:
March 16, 2011
Filing Date:
May 29, 2008
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO.,LTD.
THE BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM
THE BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM
International Classes:
H04J99/00
Domestic Patent References:
| JP2007517455A | ||||
| JP2006345531A |
Foreign References:
| WO2005062729A1 |
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro