发明名称 |
ITERATIVE NONLINEAR PRECODING AND FEEDBACK FOR MULTI-USER MULTIPLE-INPUT MULTIPLE-OUTPUT (MU-MIMO) WITH CHANNEL STATE INFORMATION (CSI) IMPAIRMENTS |
摘要 |
An iterative nonlinear preceding method based on, for example. Tomlinson-Harashima Preceding (THP) may be implemented in a MU-MIMO system to alleviate the performance degradation due to mismatches between actual Channel State Information (CSI) and impaired CSI available at a transmitter. In such a method, the effective channel may be fed back rather than a nonprecoded channel for a relay backhaul channel such that the iterative precoding and effective channel feedback may reduce the sensitivity to quantization errors and improve spectrum usage efficiency. Additionally, a Channel Quality Indicator (CQI) may be used to estimate a signal-to-interference-plus-noise (SINK) ratio based on quantization errors to accurately derive the effective channel quality of the receiver.
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申请公布号 |
US2013223555(A1) |
申请公布日期 |
2013.08.29 |
申请号 |
US201113820335 |
申请日期 |
2011.09.01 |
申请人 |
SHENG HONGSAN;LI YINGXUE K.;INTERDIGITAL PATENT HOLDINGS, INC. |
发明人 |
SHENG HONGSAN;LI YINGXUE K. |
分类号 |
H04B7/04 |
主分类号 |
H04B7/04 |
代理机构 |
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