脉冲噪声下数字调制信号的自适应解调  

Adaptive Demodulation Method for Digital Modulated Signals under Pulse Noise

作　　者：付柏成[1] 赵知劲[1] 赵治栋[1] 

机构地区：[1]杭州电子科技大学通信工程学院,浙江杭州310018

出　　处：《现代电子技术》2008年第23期10-14,共5页Modern Electronics Technique

基　　金：浙江省自然科学基金资助(Y106839)

摘　　要：提出基于自适应滤波解调α稳定分布脉冲噪声下的常规数字调制信号的方法。采用归一化最小平均p范数自适应滤波算法的自适应滤波器,跟踪信号任一码元间隔内的单一频率,根据自适应滤波器权值的收敛值可以解调相应的码元。计算机仿真结果表明,此自适应滤波解调方法性能优越,抗脉冲干扰强,同时算法计算速度快,易于实现,具有很好的实用价值。A new adaptive demodulation method for general digital modulated signals（MPSK, MFSK and MQAM） under a - stable distribution pulse ＂noise is proposed. To track single frequency of any code interval of signals and to demodulate these signals,the normalized least mean p -norm adaptive filtering algorithm is used. The simulation results indicate that the performance of this adaptive demodulation method is predominant and it can mitigate pulse interference. This adaptive demodulation method is robust,fast and easy to implement.

关 键 词：a稳定分布 数字调制信号 自适应解调 归一化最小平均P范数算法 

分 类 号：TN911.72[电子电信—通信与信息系统]