| 分布式MIMO系统中载波频偏和信道的EM-PF联合估计 |
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| 引用本文： | 张文俊, 张静, 曹欢.分布式MIMO系统中载波频偏和信道的EM-PF联合估计[J].上海师范大学学报(自然科学版),2011,40(4). |
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| 作者姓名： | 张文俊 张静 曹欢 |
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| 作者单位： | 上海师范大学信息与机电工程学院,上海,200234 |
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| 基金项目： | 上海市自然科学基金(11ZR1426600) |
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| 摘 要： | 考虑了平衰落背景下分布式MIMO系统中载波频偏和信道的联合估计问题.与集中式MIMO的联合处理方法不同,改进了EM算法,提出了EM-PF算法解决这一强非线性难题.仿真结果表明:改进的算法更逼近克拉美罗界,在高性噪比条件下,误码率更低,有很大的实用价值.
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| 关 键 词： | 分布式MIMO EM-PF 联合估计 |
The EM-PF joint estimation of carrier frequency offset and channel in distributed MIMO system |
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| ZHANG Wen-jun,ZHANG Jing,CAO Huan.The EM-PF joint estimation of carrier frequency offset and channel in distributed MIMO system[J].Journal of Shanghai Normal University(Natural Sciences),2011,40(4). |
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| Authors: | ZHANG Wen-jun ZHANG Jing CAO Huan |
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| Institution: | ZHANG Wen-jun,ZHANG Jing,CAO Huan(College of Information,Mechanical and Electrical Engineering,Shanghai Normal University,Shanghai 200234,China) |
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| Abstract: | This paper considers the joint estimation of channel and carrier frequency offset in the context of distributed flat fading MIMO system.Compared with the estimation method for centralized MIMO system,this paper improves the EM algorithm and a novel EM-PF algorithm is proposed to overcome the nonlinear problem.The simulation results show that this improved method is more approximate the Cramer-Rao Bound,lowers BER under the high SNR condition and has great practical value. |
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| Keywords: | distributed MIMO system EM-PF algorithm joint parameter estimation |
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