发明授权
- 专利标题: Eigen-beamforming for wireless communication systems
- 专利标题(中): 无线通信系统的特征波束成形
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申请号: US12189483申请日: 2008-08-11
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公开(公告)号: US08014265B2公开(公告)日: 2011-09-06
- 发明人: Sandip Sarkar , Byoung-Hoon Kim , Durga Prasad Malladi , Juan Montojo
- 申请人: Sandip Sarkar , Byoung-Hoon Kim , Durga Prasad Malladi , Juan Montojo
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM incorporated
- 当前专利权人: QUALCOMM incorporated
- 当前专利权人地址: US CA San Diego
- 代理商 Peng Zhu; Kenyon S. Jenckes
- 主分类号: H04W4/00
- IPC分类号: H04W4/00
摘要:
Techniques for sending multiple-input multiple-output (MIMO) transmissions in wireless communication systems are described. In one design, a transmitter sends a first reference signal via a first link, e.g., a cell-specific reference signal via the downlink. The transmitter receives channel quality indicator (CQI) information determined by a receiver based on the first reference signal. The transmitter also receives a second reference signal from the receiver via a second link, e.g., a sounding reference signal via the uplink. The transmitter obtains at least one MIMO channel matrix for the first link based on the second reference signal. The transmitter determines at least one precoding matrix based on the at least one MIMO channel matrix, e.g., in accordance with ideal eigen-beamforming or pseudo eigen-beamforming. The transmitter then sends a data transmission to the receiver based on the at least one precoding matrix and the CQI information.
公开/授权文献
- US20090046570A1 EIGEN-BEAMFORMING FOR WIRELESS COMMUNICATION SYSTEMS 公开/授权日:2009-02-19