摘要
利用天线阵提供空间维数的空时信号接收 ,能够明显降低多址干扰和抗多径衰落 ,提高系统的性能。研究了天线阵的RAKE接收结构 ,推导了MMSE波束形成与 1 DRAKE接收机相结合 ,扩展为 2-DRAKE接收机的性能。此外 。
Using the spatial dimension provided by the adaptive antenna arrays,the spatial temporal domain singal receiving can substanically reduce the effect of multiple access interference (MAI) and multipath fading and thus improve the system performance.In this paper,we have studied the structure of RAKE receivers with antenna arrays and deduced the performance of the extended 2 D RAKE receiver which is combined by MMSE beamforming and 1 D RAKE receiver.Furthermore,a method of estimating the channel parameters of system expected signal has been given.
出处
《南京邮电学院学报》
2000年第1期43-47,共5页
Journal of Nanjing University of Posts and Telecommunications(Natural Science)
基金
原邮电部科研基金!( 98部预研 4)
关键词
码分多址通信
天线阵
RAKE接收
Code division multiple access
Adaptive antenna arrays
RAKE receiver
