期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2014
卷号：3
期号：2
页码：470-474
出版社：Shri Pannalal Research Institute of Technolgy
摘要：In this paper, we propose and analyze a new non-coherent receiver with PN code tracking for direct sequence code division multiple access (DS-CDMA) com munication systems in Multipath channels. We employ the decision-feedback differential detection m ethod to detect MDPSK signals. An "error signal" is used to update the tap weights and the estimated code delay. Increasing the num ber of feedback symbols can im prove the Performance of the proposed non-coherent receiver. For an infinite number of feedback symbols, the optim um weight can be derived analytically, and the performance of the proposed non-coherent receiver approaches to that of the conventional coherent receiver.
关键词：DS/CDMA; Code Tracking; LMS (Least Mean ; Square error); MAI (Multiple Access Interference); and MUD ; (Multiuser Detector)
