Pre-Whitening QR-Decomposition Maximum Likelihood Detection for Co-channel Interference Rejection in MIMO Systems
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概要
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We describe a co-channel interference rejection scheme that is suitable for QR-decomposition maximum likelihood detection (MLD) in multiple-input and multiple output (MIMO) systems. A pre-whitening matrix for interference rejection is decomposed into a triangular matrix and its Hermitian matrix by using a complex Gaxpy version of the Cholesky algorithm. The decomposed triangular matrix is used as a spatial pre-filter to whiten co-channel interference. Simulation results demonstrate that the proposed scheme can suppress co-channel interference streams at the cost of receive diversity order and achieves better transmission performance than QR-decomposition MLD itself in MIMO channels with co-channel interference.
- （社）電子情報通信学会の論文
- 2009-07-01
著者
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Fujii Masaaki
Samsung Yokohama Res. Inst. Co. Ltd. Yokohama‐shi Jpn
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Fujii Masaaki
Samsung Yokohama Res. Inst. Co. Ltd.
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FUJII Masaaki
Samsung Yokohama Research Institute Co., Ltd.
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