摘要
提出了一种空时盲多用户检测器 ,该检测器只需知道所需用户的扩频码且不需知道其信道特性即可工作在频率选择性衰落信道 ,它综合了约束最小输出能量 (CMOE)盲多用户检测器和传统的空时二维RAKE(ST 2D RAKE)接收器的优点而克服了它们各自的不足。它充分利用所需用户的空间、时间和扩频码信息来抑制多址干扰 (MAI)并能组合多径分量。最后研究了基于神经网络的实现方案。
A space-time blind Multiuser Detector is proposed in this paper.The receiver can operate in a frequency-selective fading environment with only knowledge of the desired user's spreading code regardless of its channel characteristics.It integrates the advantages of constrained minimum output energy (CMOE) blind multiuser detector and conventional space-time (ST) 2D-RAKE receivers and overcomes their limitations.It can make full use of spatial,temporal and code signatures involved in the desired user's signal to suppress multiuser access interference (MAI) and combine multipath components.Neural network based implementation of the receiver is also studied.
出处
《南京邮电学院学报》
2001年第3期22-27,共6页
Journal of Nanjing University of Posts and Telecommunications(Natural Science)
基金
原邮电部预研基金 ( 98部预 4)资助项目
关键词
码分多址
盲多用户检测
天线阵
RAKE接收
神经网络
移动通信
Code division multiple access
Blind multiuser detection
Antenna array
RAKE receiver
Neural network
