| 盲匹配滤波接收机中的一种改进方法 |
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| 引用本文： | 沈红林,朱义胜. 盲匹配滤波接收机中的一种改进方法[J]. 现代电子技术, 2005, 28(10): 70-72 |
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| 作者姓名： | 沈红林 朱义胜 |
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| 作者单位： | 大连海事大学,信息工程学院,辽宁,大连,116026 |
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| 摘 要： | 将零逼近和最小均方估计算法运用于盲匹配滤波接收机(MFR)中，并对这两种算法所得到的比特误码率(BER)作了仿真比较。在噪声存在时，使用常系数算法(CMA)对信道进行估计的效果变差；为此，改用了最大似然序列估计算法(MLSE)并对匹配滤波器(MF系数进行了修正，同时使用Matlab进行了仿真，仿真结果表明：MLSE方法在低信噪比时使接收机表现出良好的性能。
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| 关 键 词： | 匹配滤波接收机 盲信道估计 盲判决反馈均衡器 常系数算法（CMA） 最大似然序列估计（MLSE） |
| 文章编号： | 1004-373X(2005)10-070-03 |
| 修稿时间： | 2005-01-19 |
An Improved Method in Blind Matched Filter Receiver |
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| SHEN Honglin,Zhu Yisheng. An Improved Method in Blind Matched Filter Receiver[J]. Modern Electronic Technique, 2005, 28(10): 70-72 |
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| Authors: | SHEN Honglin Zhu Yisheng |
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| Abstract: | Based on designs of the blind MFR,zero forcing and minimum Meansquare estimation are preposed and their BER results are compared by simulation.The effect of channel estimation which uses the CMA deteriorates is worse in the presence of noise.A new method of MaxinumLikelihood Sequence Estimation to tackle the problem is developed,as well as the modulus of MF are corrected and the result is simulated in Matlab.The simulation results show that MLSE has satisfactory behavior in the low signal tonoise ratios. |
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| Keywords: | matched filter receiver blind channel estimation blind decision feedback equalization Constant-Modulus Algorithm(CMA) Maximum-Likelihood Sequence Estimation(MLSE) |
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