发明名称 |
HYBRID TIME AND FREQUENCY DOMAIN CSI FEEDBACK SCHEME |
摘要 |
In a downlink multi-user multiple input multiple output (DL MU-MIMO) system, channel state information (CSI) feedback duration may strongly affect media access control (MAC) efficiency. While a time domain compression may give a significant reduction in feedback duration, the time domain compression may have complexity issues at the station (STA). In particular, for time domain compression, a large complex matrix multiplication may be required at the client to estimate a cyclic prefix (CP) length impulse response, which best models the frequency response of the channel. Embodiments of the invention comprise a hybrid scheme that may reduce the above complexity while maintaining significant compression gains. |
申请公布号 |
US2011310870(A1) |
申请公布日期 |
2011.12.22 |
申请号 |
US201113164514 |
申请日期 |
2011.06.20 |
申请人 |
VAN NEE DIDIER JOHANNES RICHARD;SAMPATH HEMANTH;VERMANI SAMEER;TANDRA RAHUL;VAN ZELST ALBERT;JONES, IV VINCENT KNOWLES;QUALCOMM INCORPORATED |
发明人 |
VAN NEE DIDIER JOHANNES RICHARD;SAMPATH HEMANTH;VERMANI SAMEER;TANDRA RAHUL;VAN ZELST ALBERT;JONES, IV VINCENT KNOWLES |
分类号 |
H04L27/06;H04L27/00;H04W4/00 |
主分类号 |
H04L27/06 |
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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