发明授权
US08396107B2 Generalized decision feedback equalizer precoder with receiver beamforming for matrix calculations in multi-user multiple-input multiple-output wireless transmission systems
有权
具有接收机波束成形的广义判决反馈均衡器预编码器，用于多用户多输入多输出无线传输系统中的矩阵计算
- 专利标题： Generalized decision feedback equalizer precoder with receiver beamforming for matrix calculations in multi-user multiple-input multiple-output wireless transmission systems
- 专利标题（中）： 具有接收机波束成形的广义判决反馈均衡器预编码器，用于多用户多输入多输出无线传输系统中的矩阵计算
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申请号： US12554082申请日： 2009-09-04
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公开(公告)号： US08396107B2公开(公告)日： 2013-03-12
- 发明人: Sudhanshu Gaur
- 申请人： Sudhanshu Gaur
- 申请人地址： JP Tokyo
- 专利权人： Hitachi Ltd.
- 当前专利权人： Hitachi Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Mattingly & Malur, P.C.
- 主分类号： H03H7/30
- IPC分类号： H03H7/30 ; H03H7/40 ; H03K5/159
摘要：
To realize a GDFE precoder for multi-user MIMO systems, which significantly reduces the computational cost while resulting in no capacity loss, one method comprises obtaining an effective downlink (DL) channel matrix H for the DL channel after receiver processing at the user terminals; computing an uplink (UL) covariance matrix D by assuming there are as many user terminals as a number of rows in the effective DL channel matrix H; computing a filter matrix C based on the UL covariance matrix D; computing a feedforward filter matrix F based on the filter matrix C; computing an interference pre-cancellation matrix G, based on the feedforward filter matrix F and the filter matrix C, used in a transmitter at an interference pre-cancellation stage of the GDFE precoder; and processing user symbols by a decision feedback equalizing stage of the GDFE precoder to produce filtered vector symbols.
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