Comparison of Performance of stepwise serial processing and stepwise parallel processing for Cell Search in WCDMA System

WCDMA 시스템에서 셀 탐색의 단계별 직렬 처리 및 병렬 처리의 성능 비교

We investigate the stepwise parallel processing of the serial search which can success the co]1 search at low Ec/Io. The single path Rayleigh fading channel which is worst-case channel model is considered. The typical 3-step cell search is used. The probabilities of detection, miss and false alarm for each step are used in closed forms based on the statistics of CDMA noncoherent demodulator output. The optimal power allocation to each channel and The optimal number of post-detection integrations for each step is obtained. Also, the cumulative probability distribution of the average eel] search time for serial search methods are compared.