多径信道下Rake接收机的性能分析

Performance Analysis of Rake Receiver under a Multipath Channel

信号在无线信道传输过程中存在多径干扰和衰落,通过对无线信道传输以及多径分集接收技术的介绍,采用多径衰落信道模型以及Rake接收技术,利用Matlab软件通过改变采样率以及多径合并路数对一般Rake接收机性能进行分析。结果表明,在一定信噪比下,采样率的提升和多径路数的增加可以提高整个系统的接收性能。

There are multipath interference and fading of signals in the pocess of wireless channel transmission.This paper introduces wireless channel tramsmission and multipath diversity receiving technology,adopts multipath fading channel model and Rake receiving technology,and uses Matlab software to analyze the performance of general Rake receiver by changing the sampling rate and the number of multipath merging channels.The results show that the receiving performance of whole system can be improved by increasing the sampling rate and the number of multipath channels under a certain signal-to-noise ratio.