基于并行进化规划的多用户检测器  

Multi-user Detector Based on Parallel Evolutionary Programming

作　　者：许良凤[1] 胡敏[1] 

机构地区：[1]合肥工业大学计算机与信息学院通信系,合肥230009

出　　处：《电子测量与仪器学报》2007年第4期108-111,共4页Journal of Electronic Measurement and Instrumentation

基　　金：合肥工业大学博士资助基金项目(编号:035022)

摘　　要：多用户检测技术是第三代移动通信系统CDMA中的一项关键技术。在多用户检测器中求解最佳矢量问题可以转化为在进化规划中求解具有最高适应度函数的问题,利用进化规划能全局寻优的优势,提出了一种基于并行进化规划的CDMA多用户检测器。通过性能分析和计算机仿真结果,这种新的多用户检测器在抗多址干扰的能力和抗远近效应的能力都优于进化规划的多用户检测器,并且该检测器的收敛速度明显比进化规划检测器快。由于采用并行遗传算法,使这种多用户检测器更易于实时应用和硬件实现。Multi-user detection is a key technique in 3^rd generation mobile communication system-CDMA. It is shown that the problem of minimizing the objective function of the optimal multi-user detector can be translated into the problem of finding the highest fitness function in evolutionary programming, we apply the global optimum performance of evolutionary programming to design a kind of muhi-user detector in CDMA based on parallel evolutionary programming. The performance analysis and computer simulation results show that in the aspects of anti-multiple access interference and near-far resistance, the proposed parallel evolutionary programming detector has better performance than the evolutionary programming multi-user detector, and it converges more quickly than the evolutionary programming detector. The proposed multi-user detector can be easily implemented by VLSI technology, which benefits from the parallel genetic algorithm.

关 键 词：CDMA 多用户检测器 进化规划 并行 

分 类 号：TN914.53[电子电信—通信与信息系统]