计算机科学 ›› 2013, Vol. 40 ›› Issue (Z6): 61-63.
赵文红,王巍
ZHAO Wen-hong and WANG Wei
摘要: 近年来,单通道盲分离作为信号处理领域中的重要分支,受到了人们越来越多的关注。粒子滤波和进化算法都是利用一群粒子(个体)进行逼近估计的方法,同时各有各的优势。本文将粒子滤波与进化算法两种方法结合起来,既利用了粒子滤波估计的准确性,又利用了进化算法对收敛性进行保证,提出了一种解决单通道盲分离问题的新方法。文中针对两路同频BPSK混合信号,采用粒子滤波的架构,同时利用赌轮选择方法对粒子进行重要性采样,最后根据最大后验估计的方法对当前时刻的粒子对进行估计。
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