System Capacity Analysis of Hybrid DS/SFH Spread Spectrum Multiple Access Communication System with BFSK Modulation using Genetic Algorithm

System capacity in terms of total number of simultaneous users in a noncoherent asynchronous hybrid direct sequence (DS) - slow frequency hopping (SFH) multiple access communication system employing binary frequency shift keying (BFSK) modulation is analyzed. Traditionally system capacity is determined by iteratively calculating the probability of error until it is equal to some acceptable level. This methodology takes very long time during the system design or performance evaluation process. A new scheme using genetic algorithm (GA) is presented for the analysis of the system capacity. The proposed scheme can also be used effectively to determine the available range of system parameters for any desired number of users even when there are some restrictions imposed on the use of some system parameter. The proposed scheme reduces the long calculations, accelerates the design or evaluation process and offers accuracy comparable to conventional techniques