超宽带通信中的多用户检测技术  

Multi user detection technology in Ultra Wideband Communications

作　　者：欧林晖[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《信息通信》2015年第3期34-35,共2页Information & Communications

摘　　要：多用户检测是伴随CDMA等多址技术发展起来的信号检测技术。在传统的信号检测接收中,由于远近效应和多址干扰(MAI)的影响,系统容量很难有效提高。多用户检测技术通过利用造成多址干扰的所有用户信息对各用户做联合检测,明显改善了系统性能,提高了系统容量。文章对传统检测技术和多用户检测技术之间进行了比较,分析了各种多用户检测技术的原理及优缺点。Multi-user Detection （MUD） is the signal detection technology that develops with Multi-access technology such as CDMA. In traditional signal detection and receiving, the system capacity is difficult to improve because of the influence of the far near effect and Multiple-path interference. MUD make use of all users＇ information which result in Multiple-path inter- ference to make consociation detection, so it improve the system performance and raise the system capacity obviously. The text make a comparison and imitation of the tradional detection and the MUD detection ,analyze the principle of MUD and advan- tage-disadvantaze of MUD.

关 键 词：超宽带通信 多用户检测 解相关 

分 类 号：TN914.4[电子电信—通信与信息系统]