A Fast Converge Momentum Dual-Mode Modified Constant Modulus Blind Equalization Algorithm for High-Order QAM Signals

被引：0
|
作者：
Yongjun Sun
Zhongfa Liang
Cuiyuan Jia
机构：
[1] Xidian University,Department of Communication Engineering
来源：
Wireless Personal Communications | 2015年 / 83卷
关键词：
Blind equalization; High-order QAM modulation; Momentum dual-mode; CME;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A dual-mode blind channel equalization algorithm for high-order quadrature amplitude modulation (QAM) signals is proposed. The proposed algorithm, named momentum constellation matching error modified constant modulus algorithm (MCME–MCMA), firstly starts the equalization by momentum MCMA algorithm, and then introduces a constellation matching error term when it beginning to converge, which significantly reduces the steady-state mean square error (MSE). An optimized switching-point is provided and confirmed by simulations. Simulations demonstrate that MCME–MCMA improves the convergence rate and decreases the MSE by 5–7 dB for 64-QAM and 256-QAM compared with that of MCMA.
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页码：3045 / 3055
页数：10
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