数据采集与处理2018，Vol.33Issue(3)：409-415,7.DOI:10.16337/j.1004-9037.2018.03.003
利用粒子流滤波的单通道BPSK信号盲分离算法
Blind Separation Algorithm of Single Channel BPSK Signals Using Particle Flow Filte-ring
摘要
Abstract
Since′particle impoverishment′of the particle filter deteriorates the performance of the single channel blind signal separation based on traditional particle filtering and its huge calculation ,a new single channel blind BPSK signal separation algorithm based on particle flow filtering is proposed .Firstly ,ac-cording to single channel signal of mixing two BPSK signals ,a measuring equation and a state equation are built .Secondly ,particles are updated through moving the particles in state space which obey the prior distribution to its corresponding posterior distribution ,which is different from using resampling to update particles in particle filtering (PF) ,thereby avoiding the′particle impoverishment′phenomenon caused by re-sampling in PF .Lastly a weak solution based particle flow filter is used to achieve BPSK blind signal separation .Computer simulation results show that compared with particle filtering algorithm the new al-gorithm has the lower bit error rate and computational complexity .关键词
粒子滤波/盲分离/单通道/粒子贫化/粒子流滤波Key words
particle filtering/blind separation/single channel/particle impoverishment/particle flow fil-tering分类
信息技术与安全科学引用本文复制引用
赵知劲,吴棫..利用粒子流滤波的单通道BPSK信号盲分离算法[J].数据采集与处理,2018,33(3):409-415,7.基金项目
国防科技重点实验室基金资助项目. （）
