多用户检测技术的应用与发展

第三代移动通信系统采用码分多址(CDMA)方式。由于CDMA系统是一个自干扰系统，存在多址干扰及远近效应，因而限制了系统的容量和性能。多用户检测技术能从根本上消除多址干扰，提高系统的性能。本文主要介绍了多用户检测的思想、分类和性能指标，还提出了多用户检测技术的新发展和在几个具体系统中的应用。

The Development and Application of Multi-User Detection

Code Division Multiple Access(CDMA) is adopted by the third generation mobile communication system. Because CDMA is a self-disturbing system, multiple access interference and far-near efficiency exist, so the capacity and performance of the system are limited. The multi-user detection can essentially eliminate MAI, and improve the system performance. This paper mainly introduces the idea, classification and performance indexes of MUD. New development and specific application of MUD in several systems are also presented.