发明名称 |
METHOD AND DEVICE FOR OBTAINING PRECODING MATRIX INDICATOR (PMI) AND PRECODING MATRIX |
摘要 |
<p>In the field of communication technologies, a method and an apparatus for acquiring a Precoding Matrix Indicator (PMI) and a Precoding Matrix (PM) are provided. The method includes: acquiring a reference PMI and a differential PMI according to a first non-differential codebook and a first diagonal differential codebook, where codewords included in the first diagonal differential codebook form a diagonal matrix. The apparatus includes a PMI acquiring module. Acquiring a reference PMI and a differential PMI according to a non-differential codebook and a diagonal differential codebook can reduce the feedback overhead or improve the feedback precision; and the fact that codewords included in the diagonal differential codebook form a diagonal matrix can maintain amplitude characteristics (for example, a constant modulus characteristic, and a finite character set constraint characteristic) of elements of the non-differential codebook or facilitate power distribution among antennas.</p> |
申请公布号 |
EP2525505(A1) |
申请公布日期 |
2012.11.21 |
申请号 |
EP20110732685 |
申请日期 |
2011.01.17 |
申请人 |
HUAWEI TECHNOLOGIES CO., LTD. |
发明人 |
WANG, JIANGUO;ZHOU, YONGXING |
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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