A simple method for generalizing the analysis of multiple-access interference in direct-sequence spread spectrum systems

In the open literature several approaches have been reported for evaluation of the probability of error for multi-user direct-sequence spread spectrum (DSSS) systems. Most of these approaches are applicable only to the case for which the desired and undesired DSSS signals have identical bandwidths and carrier frequencies. In this paper a more general approach for evaluation of the probability of error for multi-user DSSS systems is presented. Both analytical and simulation results are obtained to show the feasibility of this approach.