| MIMO系统中MCMC检测算法的研究与改进 |
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| 引用本文： | 肖珂,苏明超,郭书军. MIMO系统中MCMC检测算法的研究与改进[J]. 北方工业大学学报, 2009, 21(3): 4-8 |
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| 作者姓名： | 肖珂 苏明超 郭书军 |
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| 作者单位： | 北方工业大学信息工程学院,100144,北京;北方工业大学信息工程学院,100144,北京;北方工业大学信息工程学院,100144,北京 |
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| 摘 要： | 介绍了MIMO接收机模型,在分析LSD检测算法和MCMC检测算法基础上,提出了一种改进的MCMC检测算法.该算法通过在接收机中添加预判决模块,融合SIC-MMSE算法,有效利用信道译码器产生的软信息,辅助MIMO检测器中的吉布斯采样,减少了采样点数,降低了传统算法的复杂度.仿真结果显示,改进的MCMC算法性能上优于LSD算法,在相同的信噪比情况下降低了误码率,有一定的理论和实用意义.
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| 关 键 词： | 多天线系统 列表球形检测算法 马尔科夫链蒙特卡洛算法 |
An Improved MCMC Detection Algorithm for MIMO Systems |
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| Xiao Ke,Su Mingchao,Guo Shujun. An Improved MCMC Detection Algorithm for MIMO Systems[J]. Journal of North China University of Technology, 2009, 21(3): 4-8 |
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| Authors: | Xiao Ke Su Mingchao Guo Shujun |
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| Affiliation: | Xiao Ke Su Mingchao Guo Shujun (College of Information Engineering, North China Univ. of Teeh. , 1000144, Beijing, China) |
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| Abstract: | The LSD algorithm and MCMC algorithm are introduced in this paper.An improved MCMC detection algorithm is proposed.It reduces the number of samples and the complexity of the traditional algorithm by adding a pre-decision block in the receiver to assist the Gibbs sampling in MIMO detector.The simulation results show that the improved MCMC algorithm performs better than the LSD algorithm and achieves a lower BER at the same SNR point. |
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| Keywords: | MIMO LSD MCMC |
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