【作者】 程鹏； 宋文涛；

【Author】 CHENG Peng, SONG Wen-tao Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200030, China

【机构】 上海交通大学电子工程系；

【摘要】 本文主要研究了CDMA移动通信系统的各种多用户检测算法的原理和优缺点。首先介绍了多用户检测技术的基本分类,主要有线性多用户检测和非线性多用户检测两类,前者包括解相关检测、线性最小均方误差检测,后者则以干扰抵消多用户检测为主,又分为串行和并行干扰抵消多用户检测。然后对各类多用户检测技术的特点进行了分析比较。最后,探讨了几种最新的多用户检测技术并分析了它们各自的算法和特点。更多还原

【Abstract】 This article focuses on the principle and algorithm of Multiuser Detection (MUD) and discusses the main techniques available for data detection in wireless CDMA systems. MUD can be classified into two main parts: Linear MUD and Nonlinear MUD. Linear MUD includes Decorrelating Detection and Minimum Mean-Square Error (MMSE) Linear MUD, while Nonlinear MUD includes Successive Interference Cancellation (SIC) and Parallel Interference Cancellation (PIC). In this paper, the pros and cons of recent and old techniques available in the literature are discussed. Furthermore, delay, complexity, and alleged relative BER performance comparisons are also assessed.更多还原