An Adaptive Channel Estimation Algorithm for WCDMA Downlink Channel and Performance Analysis
Qiu Ling · 2003
A novel adaptive weighted multi-symbol averaging ( AWMSA) channel estimation algorithm with PCPICH is presented for WCDMA downlink channel using coherent RAKE combining. It consists of two parts: a channel fadin g-rate detector and a selector for choosing the most suitable accumulation weig ht. The performance achievable with coherent RAKE combining using the proposed A WMSA channel estimation algorithm is evaluated by computer simulations in a freq uency selective multipath Rayleigh fading channel and the simulation results ind icate that AWMSA channel estimation algorithm works better than whole averaging or non-averaging algorithm.