发明授权
- 专利标题： Efficient feedback of channel information in a closed loop beamforming wireless communication system
- 专利标题（中）： 在闭环波束成形无线通信系统中有效地反馈信道信息
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申请号： US11237341申请日： 2005-09-28
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公开(公告)号： US08416862B2公开(公告)日： 2013-04-09
- 发明人: Carlos Aldana , Joonsuk Kim
- 申请人： Carlos Aldana , Joonsuk Kim
- 申请人地址： US CA Irvine
- 专利权人： Broadcom Corporation
- 当前专利权人： Broadcom Corporation
- 当前专利权人地址： US CA Irvine
- 代理机构： Garlick & Markison
- 代理商 Holly L. Rudnick
- 主分类号： H04K1/10
- IPC分类号： H04K1/10
摘要：
A method for feeding back transmitter beamforming information from a receiving wireless communication device to a transmitting wireless communication device includes a receiving wireless communication device receiving a preamble sequence from the transmitting wireless device. The receiving wireless device estimates a channel response based upon the preamble sequence and then determines an estimated transmitter beamforming unitary matrix based upon the channel response and a receiver beamforming unitary matrix. The receiving wireless device then decomposes the estimated transmitter beamforming unitary matrix to produce the transmitter beamforming information and then wirelessly sends the transmitter beamforming information to the transmitting wireless device. The receiving wireless device may transform the estimated transmitter beamforming unitary matrix using a QR decomposition operation such as a Givens Rotation operation to produce the transformer beamforming information.
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