Performance analysis of double-dwell serial search technique in case of multiple pilot signals

In this paper, the performance of the double-dwell serial search technique is analyzed in the forward link of a cellular CDMA system in the case of multiple pilot signals. A general expression for the mean acquisition time is obtained by taking into account the multiple H₁ regions due to the pilot signals coming from different base stations. The detection and false alarm probabilities of the processor with CFAR characteristics are derived analytically in a frequency-selective Rayleigh fading channel. The performance of the code acquisition technique is evaluated numerically to investigate the effects of threshold setting, post-detection integration in the verification mode, fading rate, and so on, with an emphasis on the worst case where the mobile is located around the cell boundary