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基于BD的改进多用户MIMO预编码算法 被引量：3

Improved BD Precoding Algorithms for Multi-User MIMO Systems
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摘要 块对角化(BD,Block diagonalization)预编码算法可以全部消除多用户MIMO的共信道干扰(CCI,Co-Channel Interference),但其子流之间强弱差别很大。提出了一种低复杂度的子流选择算法以及基于用户公平性的功率分配方案。前者在容量损失不多的前提下,提升了系统的误码性能和功率利用效率;后者使系统各子流接收信噪比相同,各个用户的误码性能一致,且计算复杂度低,不需要复杂的数值优化。 The Block diagonalization （BD） precoding algorithm of multi-user MIMO systems eliminates the co-channel interference （CCI） , but great differences of intensity still exist in its substreams. This paper proposes a low complexity substreams selection algorithm and a power allocation scheme based on the fairness between users; The former improves the BER performance and the effi- ciency in power utilization with a bearable capacity loss. The later makes all the substreams have the same SNR and all the users have the same BER performance. It also reduces the computational complexity by saving the necessity in conducting numerical optimization.
作者 祝锴 王丽 胡捍英
机构地区 信息工程大学信息工程学院
出处 《信息工程大学学报》 2010年第1期7-10,共4页 Journal of Information Engineering University
基金 国家863计划资助项目(2009AA011504)
关键词 MIMO 预编码 块对角化 子流选择 公平性 MIMO precoding block diagonalization substreams selection fairness
分类号 TN929.5 [电子电信—通信与信息系统]
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参考文献11

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同被引文献26

  • 1Komine T,Nakagawa M.Fundamental analysis for visiblelight communication system using LED lights[J].IEEE Tran.Consumer Electronics,2004,50(1):00-107.
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  • 7Yang H,Bergmans J W M,Schenk T C W,et al.Uniform illumination rendering using an array of LEDs:a signal processing perspective[J].IEEE Trans.Signal Process.,2009,57(3):1044-1057.
  • 8Minh H L,O’Brien D C,Faulkner G,et al.100-Mb/s NRZ visiblelight communications using apostequalized white LED.Photonic Technol.Lett.,2009,21(15):1063-1065.
  • 9Wang Z,Yu C,Zhong W,et al.Performance of a novel LED lamp arrangement to reduce SNR fluctuation for multi-user visible light communication system[J].Opt.Express,2012,20(4):4564-4573.
  • 10Ding J P,Huang Z,Ji Y.Evolutionary algorithm based power coverage optimization for visible light communications[J].Commun.Lett.,2012,16(4):439-441.

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信息工程大学学报
2010年 第1期

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