发明名称 |
DIFFERENTIAL FEEDBACK SCHEME FOR CLOSED-LOOP MIMO BEAMFORMING |
摘要 |
A first N×M codebook of a first rank M may be used to generate a second N×(N−M) codebook of a second rank (N−M). This second codebook is both orthogonal and complementary to the first codebook. In practice, this may reduce storage requirements in closed-loop MIMO beamforming, because the second codebook may be dynamically generated as needed by a base station and/or a mobile station. In some cases, a higher rank beamforming matrix or precoding matrix may be formed from a lower rank (e.g., one or two) beamforming matrix or precoding matrix. Also, a novel way to generate the rotation matrix Qv(t-1) is disclosed. |
申请公布号 |
EP2425544(A4) |
申请公布日期 |
2015.03.11 |
申请号 |
EP20100770386 |
申请日期 |
2010.04.29 |
申请人 |
INTEL CORPORATION |
发明人 |
LI, QINGHUA;ZHU, YUAN;LIN, XINTIAN EDDIE |
分类号 |
H04B7/04;H04B7/06;H04L25/03 |
主分类号 |
H04B7/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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