一种基于独立分量分析的OFDM-IDMA检测方法  

ICA- based Detection Algorthm for OFDM- IDMA System

作　　者：冯肖扬 徐鑫[1] 

机构地区：[1]中国电子科技集团第三十研究所,四川成都610041

出　　处：《通信技术》2015年第4期392-396,共5页Communications Technology

摘　　要：提出了一种基于独立分量分析(ICA)的OFDM-IDMA检测新方法。独立分量分析是信号盲源分离领域中的新技术,它可以在系统用户特征序列未知的情况下,成功地提取出有用信号,节省了系统的资源。经过进一步优化,ICA可适用于OFDM-IDMA系统中,成功地实现对系统用户信号的检测。最后通过计算机仿真结果验证了该算法的有效性,且检测性能优于过去的方法;采用ICA算法检测器的OFDM-IDMA系统,还可减小通信传输时的误码率。A novel ICA-based detection algorithm for OFDM-IDMA system is proposed. ICA, as a new signal technology in blind source separation, can teristics sequence of the system user, thus saving successfully extract useful signal without knowing charac- the system resources. After futher modification, the pro- posed algorithm could be applicable to OFDM-IDMA system, and thus successfully realize the dectection of system user signal. Finally, computer simulation results verify that the proposed algorithm is feasibile and enjoys better dectection performance as compared with the conventional one. OFDM-IDMA system with ICA detection algorithm could reduce bit error rate in communication tansmission.

关 键 词：独立分量分析 交织多址 OFDM-IDMA系统 检测器 

分 类 号：TN918.91[电子电信—通信与信息系统]