发明名称 |
Low overhead PMI and CQI feedback and pairing schemes for MU-MIMO |
摘要 |
A method is provided for searching for a pairing PMI including estimating a MIMO wireless propagation channel from an access point transmitter to a receiver at a UE; quantizing the estimated channel with a codebook consisting of a plurality of codewords, the result being an actual SU-MIMO PMI currently applicable to the UE; estimating the channel quality corresponding to the actual SU-MIMO PMI, resulting in at least one CQI for the UE; constructing a plurality of subsets from a codebook of codewords, wherein each subset comprises potential MU-MIMO PMIs that represent channels that have reduced interference with a channel represented by one of the potential SU-MIMO PMIs; associating each potential SU-MIMO PMI with the subset that comprises the potential MU-MIMO PMIs that represent channels that have reduced interference with the channel represented by that potential SU-MIMO PMI; searching for an appropriate pairing PMI and the associated CQI for the UE. |
申请公布号 |
US8644422(B2) |
申请公布日期 |
2014.02.04 |
申请号 |
US20100705482 |
申请日期 |
2010.02.12 |
申请人 |
GAO SHIWEI;XU HUA;JIA YONGKANG;MOBASHER AMIN;BAYESTEH ALIREZA;CAI ZHIJUN;BLACKBERRY LIMITED |
发明人 |
GAO SHIWEI;XU HUA;JIA YONGKANG;MOBASHER AMIN;BAYESTEH ALIREZA;CAI ZHIJUN |
分类号 |
H03K9/00;H04L27/06 |
主分类号 |
H03K9/00 |
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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