Modified constant modulus algorithm based on new soft decision-directed scheme for both square-QAM system and cross-QAM system

In this paper, an improved constant modulus equalization algorithm called MCMA+MSDD is proposed based on CMA+SDD. The proposed CMA introduces variable step-size and modifies SDD method by dividing rectangular decision region S xy dynamically. The MCMA+MSDD algorithm can be used not only in square-QA...

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Main Authors: Xingli Huang, Huaizong Shao, Wei Huang
Format: Conference Proceeding
Language:English
Subjects:
Bit error rate
Blind equalizers
Convergence
Heuristic algorithms
Quadrature amplitude modulation
Steady-state
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creator Xingli Huang
Huaizong Shao
Wei Huang
description In this paper, an improved constant modulus equalization algorithm called MCMA+MSDD is proposed based on CMA+SDD. The proposed CMA introduces variable step-size and modifies SDD method by dividing rectangular decision region S xy dynamically. The MCMA+MSDD algorithm can be used not only in square-QAM system but also in cross-QAM system. The simulation results show that the proposed algorithm has better performance both in convergence speed and steady-state mean square error compared with the CMA+SDD and CMA+DD algorithm.
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The proposed CMA introduces variable step-size and modifies SDD method by dividing rectangular decision region S xy dynamically. The MCMA+MSDD algorithm can be used not only in square-QAM system but also in cross-QAM system. 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subjects Bit error rate
Blind equalizers
Convergence
Heuristic algorithms
Quadrature amplitude modulation
Steady-state
title Modified constant modulus algorithm based on new soft decision-directed scheme for both square-QAM system and cross-QAM system
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