摘要
盲自适应多用户检测器由于既能实时跟踪信道信息及用户信息,又不需要发送训练序列而成为研究的热点,但一般的盲自适应多用户检测技术存在收敛速度慢的弱点。提出一种基于MOE(最小输出能量)的盲自适应多用户检测器,通过合理地选取时变步长,可有效地提高多用户检测器的收敛速度,从而提高系统的性能。
Blind adaptive multiuser detector has become a researchhotspot because it can not only track real-time information of channels and users, but also have no need of train sequences. But many blind adaptive multiuser detection algorithms involve low convergence rate. This paper presents a MOE based blind adaptive multiuser detector for CDMA systems. By reasonably choosing time varying step size, it can effectively improve the convergence rate so as toincrease the whole system performance.
出处
《通信技术》
2002年第10X期57-59,共3页
Communications Technology
关键词
码分多址
盲自适应
多用户检测器
时变步长
收敛速度
CDMA, blind adaptive, multiuser detector, time varying step size, convergence rate
