| 基于EM的MIMO-OFDM系统LMMSE信道估计 |
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| 引用本文： | 吕博,张兴周,刘春玲.基于EM的MIMO-OFDM系统LMMSE信道估计[J].应用科技,2011,38(2):38-41,55. |
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| 作者姓名： | 吕博 张兴周 刘春玲 |
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| 作者单位： | 哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 最小均方误差(MMSE)信道估计算法应用于MIMO-OFDM系统时将带来高计算复杂度且不易实现,根据这个问题,提出了一种基于期望最大化(EM)的线性最小均方误差(LMMSE)信道估计算法,并分析了该算法的性能.EM算法可以把多输入多输出(MIMO)信道估计问题转化为一系列单输入单输出(SISO)信道估计问题,避免了大规...
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| 关 键 词： | 多输入多输出 正交频分复用 信道估计 期望最大化 线性最小均方误差 |
EM-based LMMSE channel estimation for MIMO-OFDM system |
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| L Bo,ZHANG Xingzhou,LIU Chunling.EM-based LMMSE channel estimation for MIMO-OFDM system[J].Applied Science and Technology,2011,38(2):38-41,55. |
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| Authors: | L Bo ZHANG Xingzhou LIU Chunling |
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| Institution: | L(U) Bo,ZHANG Xingzhou,LIU Chunling |
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| Abstract: | The channel estimation algorithm of minimum mean square error(MMSE)is of high computational complexity and is not easy to carry out when it is applied to multiple input multiple output with orthogonal frequency division multiplexing(MIMO-OFDM)systems.Aiming at these problems,an expectation maximum(EM)based linear minimum square mean(LMMSE)algorithm is proposed and the performance is analyzed.The EM algorithm can change multiple input multiple output(MIMO)channel estimation problem into a series of single in... |
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| Keywords: | multiple input multiple output(MIMO) orthogonal frequency division multiplexing(OFDM) channel estimation expectation maximum(EM) linear minimum mean square error(LMMSE) |
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