摘要
盲均衡恒模算法对高阶多模调制信号(如16QAM等)的信道均衡效果较差,基于对其算法的研究,提出了一种适用多模调制的并行改进算法。该算法以恒模算法作为训练模式,待恒模算法达到初步收敛后,再采用多模并行算法对多模调制信号进行信道均衡,从而获得更小的剩余误差和更低的传输误码率。计算机仿真结果表明,文章提出的多模并行半盲均衡算法在减小稳态剩余误差和降低系统误码率方面,性能有着显著的提升。
The blind equalization Constant Modulus Algorithm(CMA)faces challenges with high-order multi-modulation signals like 16QAM due to its fixed modulus convergence.To address this,a multi-modulus parallel semi-blind equalization algorithm has been developed.It begins with CMA for initial training and then applies a multi-modulus approach for further equalization.This hybrid method combines the simplicity of CMA with the precision of multi-modulus techniques,resulting in faster convergence and reduced steady-state errors and bit error rates.Simulations confirm its enhanced performance in these areas.
作者
郝广凯
田毅辉
陆卫强
陆格格
雷鸣
HAO Guangkai;TIAN Yihui;LU Weiqiang;LU Gege;LEI Ming(Shanghai Aerospace Electronic Technology Institute,Shanghai,201109,China)
出处
《长江信息通信》
2025年第9期71-74,共4页
Changjiang Information & Communications
关键词
半盲均衡
恒模算法
多模并行算法
Semi-blind equalization
Constant modulus algorithm
Multi-mode parallel algorithm
