An Adaptive Channel Estimation Algorithm for WCDMA Downlink Reception
Jie Kong · Dianzi Ke-ji Daxue xuebao · 2007
After study the channel estimation algorithms in the downlink of WCDMA system,RAKE receiver has recently been adopted to resolve multi-path components,then combine them against multi-path fading. However,the precision of channel estimation is a key of the RAKE receiver.A channel estimation scheme called Weighted Multi-Slot Averaging(WMSA)channel estimation algorithm not only increases thetime delay,but its performance will also be reduced at the situation of quickly moving.A simple adaptive WMSA channel estimation algorithm is presented in this paper.Less BER(bit error rate)of RAKE receiver is obtained.