Performance Analysis of Sequential Estimation Schemes for Fast Acquisition of Direct Sequence Spread Spectrum Systems

Abstract

Key Words : DSSS (direct sequence spread spectrum), RASE (rapid acquisition sequential estimation), SASE (seed accumulating sequential estimation), RSSE (recursive soft sequential estimation) ABSTRACTIn the direct sequence spread spectrum system, the correct synchronization is very important; hence, several acquisition schemes based on the sequential estimation have been developed. Typically, the rapid acquisition sequential estimation (RASE) scheme, the seed accumulating sequential estimation (SASE) scheme, the recursive soft sequential estimation (RSSE) scheme have been developed for the correct acquisition. However, the objective performance comparison and analysis between former estimation schemes have not been performed so far. In thispaper, we compare and analyze the performance of the above sequential estimation schemes by simulating the correct chip probability and the mean acquisition time (MAT).