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3rd International Conference on Environmental Science and Information Application Technology (ESIAT)

作者： Rao, Wei Nanchang Inst Technol Nanchang 330099 Peoples R China

The Constant Modulus algorithm (CMA) is recognized as the most widely used algorithm in blind channel equalization practice. However, the CMA cost function exhibits local minima, which often leads to ill-convergence. This paper proposes a concurrent equalizer, in which a soft decision directed (SDD) equalizer operates cooperatively with a CMA equalizer, controlled through a non-linear link that depends on the system a priory state. The simulation results show that the proposed equalizer has faster convergence rate and lower steady-state mean square error than the CMA equalizer. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Conference ESIAT2011 Organization Committee.

关键词： Constant modulus algorithm soft decision directed algorithm blind equalization

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New Concurrent Modulus algorithm and soft decision directed Scheme for Blind Equalization

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Procedia Environmental Sciences 2011年 10卷 1264-1269页

作者： Wei Rao Nanchang Institute of Technology Nanchang 330099 P.R. China

关键词： Constant modulus algorithm soft decision directed algorithm blind equalization

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New Concurrent Modulus algorithm and soft decision directed Scheme for Blind Equalization

New Concurrent Modulus Algorithm and Soft Decision Directed ...

引用

2011 3rd International Conference on Environmental Science and Information Application Technology(ESIAT 2011)

作者： Wei Rao Nanchang Institute of Technology

The Constant Modulus algorithm(CMA) is recognized as the most widely used algorithm in blind channel equalization practice. However, the CMA cost function exhibits local minima, which often leads to ill-convergence. This paper proposes a concurrent equalizer, in which a soft decision directed(SDD) equalizer operates cooperatively with a CMA equalizer, controlled through a non-linear link that depends on the system a priory state. The simulation results show that the proposed equalizer has faster convergence rate and lower steady-state mean square error than the CMA equalizer.

关键词： Constant modulus algorithm soft decision directed algorithm blind equalization

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