Experiments on fast cell search algorithm for intercell asynchronous W-CDMA mobile radio

Laboratory and field experiment results for a two-step cell search algorithm using scramble code masking for intercell asynchronous W-CDMA mobile radio are presented. The scramble code is masked at different time positions during each scramble period in the forward link common control channel (CCH) for scramble code timing detection at the mobile receiver. 16 scramble codes are used. The cell search time achievable with the authors' recently proposed three-step cell search algorithm is estimated from the experimental results; cell search can be accomplished within approximately 960 ms at a probability of 93% in the case of 512 scramble codes and 16 scramble code groups.