基于改进粒子群优化算法的CDMA多用户检测  

CDMA multi-user detection based on the improved particle swarm optimization algorithm

作　　者：孙惠芹[1] 刘南平[2] 

机构地区：[1]天津职业大学电子信息工程学院,天津300410 [2]天津电子信息职业技术学院电子技术系,天津300350

出　　处：《天津师范大学学报（自然科学版）》2013年第4期24-27,共4页Journal of Tianjin Normal University：Natural Science Edition

基　　金：中国博士后基金资助项目(20090450750)

摘　　要：采用改进的粒子群优化算法,引入因子w,利用sigmoid函数离散粒子群设计CDMA多用户检测系统.针对不同信噪比和用户数,对其误码率和抗远近效应性能进行仿真分析,证实在CDMA系统中安装基于离散型粒子群优化算法的多用户检测系统具有可行性,且算法效率高,加快了运行的收敛速度.With improved particle swam： optimization algorithm （DPSO） which incorporates factor w, CDMA muhi-user detection system was designed using discrete particle swarm optimization with sigmoid function. By simulating analysis of bit error rate and anti near-far effect according to different signal-to-noise ratio （SNR） and number of users, the installa- tion of multi-user detection system which based on the discrete particle swarm optimization algorithm in CDMA system was proved to be feasible, and the algorithm was efficient and accelerated the tempo of convergence.

关 键 词：多用户检测 改进的粒子群优化算法 误码率 抗远近效应 信噪比 

分 类 号：TN919[电子电信—通信与信息系统]