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http://dx.doi.org/10.7236/JIIBC.2016.16.3.89

Performance Evaluation of a Dual-Mode Blind Equalization Algorithm Using the Size of Decision-Directed Error Signal for High-Order QAM Signals  

Jeong, Young-Hwa (Dept. of Information & Communication, Namseoul University)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.16, no.3, 2016 , pp. 89-95 More about this Journal
Abstract
In this paper, we propose a dual-mode blind equalization algorithm that two of the blind equalization algorithm using the size of the decision-directed error signal is automatically switched. The proposed algorithm has a faster convergence speed due to operation of the MSAGF-SMMA with large fixed step-size mainly in the initial equalization. After the equalization has been made to some extent, the proposed algorithm has a smaller residual error in the steady- state by operation of the MSAGF-SMMA with a variable step-size mainly. The variable step-size is determined by multiplying the size of the decision-directed error signal of a fixed step-size. In this paper, we analyze the performance of the proposed algorithm. The computer simulation results demonstrate that the proposed algorithm has a significantly improved performance in terms of a residual inter-symbol interference and residual error in the steady-state compared with the MMA, SMMA, and MSAGF-SMMA.
Keywords
MMA; MMA; SMMA; MSAGF-SMMA; dual-mode blind equalization; variable step-size;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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