Complexity Analysis of Heuristic DS/CDMA Detectors Implemented in DSP Platform

This work investigates issues concerning the computational complexity of multiuser receivers in direct sequence code division multiple access (DS/CDMA) systems based on heuristic techniques and implemented on commercial platform for digital signal processing (DSP) (Texas TMS320C6713). The multiuser detection algorithms which were implemented in baseband are based on the heuristic local search (LS) and simulated annealing (SA) approaches. Figures of merit regarding to the computational complexity increasing, due to the system loading increment (number of active users) are discussed, and a brief methodology for the design/implementation of the baseband receiver using DSP platform is presented as well.