发明名称 |
Techniques for detection of signals in multiple-input multiple-output communication systems |
摘要 |
A receiver of a multiple-input multiple-output (MIMO) system performs QR decomposition of the channel matrix to enable detection of a transmitted vector in a layered manner. In each layer, a sub-vector of the transmitted vector is estimated. A reactive tabu search is performed if an estimated symbol differs from a nearest symbol in the alphabet by a predetermined value. The receiver may order the entries of the channel matrix prior to QR decomposition to enable estimation in an optimum order. In another embodiment, a receiver performs multiple reactive tabu searches to estimate a transmitted vector. The receiver employs a fixed threshold or a variable threshold for a cost function used in the multiple reactive tabu searches depending on whether the MIMO system is under-determined or not. The techniques enable low bit-error rate (BER) performance in MIMO systems with large number of antennas and when higher-order modulation techniques are used. |
申请公布号 |
US8634490(B2) |
申请公布日期 |
2014.01.21 |
申请号 |
US201213545010 |
申请日期 |
2012.07.10 |
申请人 |
CHOCKALINGAM ANANTHANARAYANAN;RAJAN BALAJI SUNDAR;NAGARAJA SRINIDHI;DATTA TANUMAY;INDIAN INSTITUTE OF SCIENCE |
发明人 |
CHOCKALINGAM ANANTHANARAYANAN;RAJAN BALAJI SUNDAR;NAGARAJA SRINIDHI;DATTA TANUMAY |
分类号 |
H04B7/02;H04L1/02 |
主分类号 |
H04B7/02 |
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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