发明授权
US08477869B1 Equal power output spatial spreading matrix for use in a wireless MIMO communication system
有权
用于无线MIMO通信系统的等功率输出空间扩展矩阵
- 专利标题： Equal power output spatial spreading matrix for use in a wireless MIMO communication system
- 专利标题（中）： 用于无线MIMO通信系统的等功率输出空间扩展矩阵
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申请号： US13567763申请日： 2012-08-06
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公开(公告)号： US08477869B1公开(公告)日： 2013-07-02
- 发明人: Arul Durai Murugan Palanivelu , Hui-Ling Lou , Kedar Shirali , Rohit U. Nabar , Atul Salhotra
- 申请人： Arul Durai Murugan Palanivelu , Hui-Ling Lou , Kedar Shirali , Rohit U. Nabar , Atul Salhotra
- 申请人地址： BM Hamilton
- 专利权人： Marvell International Ltd.
- 当前专利权人： Marvell International Ltd.
- 当前专利权人地址： BM Hamilton
- 主分类号： H04B7/02
- IPC分类号： H04B7/02 ; H04B1/40 ; H04L23/02
摘要：
A symbol encoder unit is configured to produce two or more encoded spatial data streams, wherein a number, NSS, of the encoded spatial data streams is less than a number, NTX, of transmission antennas to be used to transmit the encoded spatial data streams. A spatial spreading unit is configured to utilize a spatial spreading matrix Q to distribute two or more encoded spatial data streams to the transmission antennas. Q has NTX rows and NSS columns, and Q satisfies one or more of the following two constraints: ∑ l = 1 N SS Q ( t , l ) 2 = A t B ( a ) for all t=1 . . . NTX., or ∑ l = 1 N SS S l Q ( t , l ) 2 = A t B ( b ) for all t=1 . . . NTX when Sl is equal to (i)−1 or (ii) 1. Q(t,l) is a component of Q at row t, column l, Sl is a symbol in an 1-th spatial stream. B is a constant, and A1, A2, . . . , ANTX is a sequence of constants.
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