| 基于MMMA的双模式变步长盲均衡算法 |
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| 引用本文： | 王晓东,孟玲玲,韩宝如.基于MMMA的双模式变步长盲均衡算法[J].电视技术,2011,35(13):86-88,109. |
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| 作者姓名： | 王晓东 孟玲玲 韩宝如 |
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| 作者单位： | 1. 燕山大学信息学院,河北秦皇岛,066004
2. 海南软件职业技术学院电子工程系,海南琼海,571400 |
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| 摘 要： | 恒模算法(CMA)是一种重要的盲均衡技术,虽然能达到盲均衡效果,但是收敛后有较大的剩余误差和相位模糊。在VS-MCMA+DD-LMS算法的基础上进行了改进,提出变步长修正多模算法(VS-MMMA)和DD-LMS相结合,以及变步长解相关修正多模算法(VS-UMMMA)和DD-LMS相结合两种新算法,新算法在收敛速度和均衡误差方面均有明显的改进。最后,对该算法进行了仿真和性能分析。
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| 关 键 词： | 剩余误差 相位模糊 解相关 |
Variable Step Dual-mode Blind Equalization Algorithm Based on MMMA |
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| WANG Xiaodong,MENG Lingling,HAN Baoru.Variable Step Dual-mode Blind Equalization Algorithm Based on MMMA[J].Tv Engineering,2011,35(13):86-88,109. |
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| Authors: | WANG Xiaodong MENG Lingling HAN Baoru |
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| Affiliation: | 1.College of Information,Yanshan University,Hebei Qinhuangdao 066004,China;2.Department of Electronic Engineering,Hainan Software Vocational Technical College,Hainan Qionghai 571400,China) |
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| Abstract: | CMA is a very important technology of blind equalization.Although it can achieve the aim of blind equalization,it has the problems of big residual error and phase blur when convergenced.In this paper,two variable step modified dual-mode blind equalization algorithms are proposed.The algorithm of VS-MMMA+DD-LMS units the modified multi-modulus algorithm and decision directed algorithm.The algorithm of VS-UMMMA+DD-LMS units the uncorrelated modified multi-modulus algorithm and decision directed algorithm.The algorithms proposed in this paper can improve the speed of convergence and reduce the residual error effectively.The capability of this algorithm is simulated and analysed finally. |
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| Keywords: | residual error phase blur uncorrelated |
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