Performance evaluation of PN acquisition algorithm in CDMA cellular systems

Abstract

The performance of a window-based PN acquisition algorithm is fully analyzed by the Markov chain acquisition model on the assumption of a direct sequence code division multiple access forward link. The algorithm with a moderate window size has a shorter acquisition time than the immediate verification algorithm has-especially in low Ec/No. This results from the fact that the window-based algorithm, which verifies only one code phase that has maximum correlation output, consumes an additional penalty time in each window even in the condition of frequent false alarms. As the mean acquisition time varies with the window size, we may have fast code acquisition with the proper window size according to the Ec/No.