| 基于后验概率估计的软输出MMSE MIMO排序串行干扰抵消检测算法 |
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| 引用本文： | 王军,王振伟,李少谦.基于后验概率估计的软输出MMSE MIMO排序串行干扰抵消检测算法[J].电路与系统学报,2010,15(2). |
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| 作者姓名： | 王军 王振伟 李少谦 |
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| 作者单位： | 电子科技大学通信抗干扰技术国家级重点实验室,四川,成都,611731 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，"973"课题，国家重大专项课题，国家基础科研项目 |
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| 摘 要： | 该文研究了信道编码无线MIMO通信系统中的软输出MMSE排序串行干扰抵消检测算法。利用MMSE滤波器输出的高斯近似表示,提出了基于后验概率估计的判决误差传播抑制算法,以提高检测算法输出的编码比特对数似然比的可靠性;利用检测器的矩阵结构和矩阵求逆引理,进一步提出了降低复杂度的实现方法。仿真结果表明:提出的检测算法优于现有算法,当BER为10-4,在所给的仿真条件下有1～3dB的性能增益。
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| 关 键 词： | 排序串行干扰抵消 复杂度 |
A posteriori probability based soft-output MMSE MIMO ordering sequential interference cancellation detection |
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| WANG Jun,WANG Zhen-wei,LI Shao-qian.A posteriori probability based soft-output MMSE MIMO ordering sequential interference cancellation detection[J].Journal of Circuits and Systems,2010,15(2). |
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| Authors: | WANG Jun WANG Zhen-wei LI Shao-qian |
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| Affiliation: | WANG Jun,WANG Zhen-wei,LI Shao-qian (National Key Laboratory of Science , Technology on Communications,UESTC,Chengdu 611731,China) |
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| Abstract: | For channel coded wireless multiple-input multiple-output (MIMO) communication systems,soft-output minimum mean square error (MMSE) ordering sequential interference cancellation (OSIC) detection is investigated in this paper.By Gaussian approximation of the output of MMSE filter,a posteriori symbol probability estimation based scheme is proposed to suppress the impact of error propagation due to imperfect interference cancellation so that the reliability of the log-likelihood ratio of each coded bit can be ... |
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| Keywords: | MIMO MMSE |
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