摘要
多用户检测(Multi-User Detection,MUD)就是利用各用户之间特征码的非正交性来消除多用户之间的相互干扰。多用户检测充分利用造成多址干扰的所有用户信号的信息对单个用户的信号进行检测,既可以降低多址干扰和远近效应的影响,也降低了系统对功率控制精度的要求,有效地利用了链路频谱资源,从而显著提高了系统的容量。
By using the non-orthogonal signature between users, Multi-user detection technology could eliminate the multi-user interference. It takes full advantage of the signal information of all users, which causes the multi-address interference, to detects the signal of individual users, thus reducing MAI and the effect of distance while decreasing the precision requirements by the power control system. In this way, the resources of a link spectrum could be effectively utilized, and thereby the capacity of the system significantly enhanced.
出处
《通信技术》
2009年第5期262-264,共3页
Communications Technology
关键词
多用户检测
多址干扰
链路频谱
匹配滤波器
盲自适应算法
multi-user detection
multi-adderss interference
link spectrum： matched filter
blind adaptive algorithm
