WSEAS Transactions on Communications
Print ISSN: 1109-2742, E-ISSN: 2224-2864
Volume 13, 2014
Heuristic Multiuser Detectors: A DSP Implementation Perspective
Authors: ,
Abstract: 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 (MuD) algorithms which were implemented in baseband are based on the heuristic local search (LS) and simulated annealing (SA) approaches. Figures of merit regarding the bit error rate (BER) performance versus computational complexity trade-off are evaluated as a function of the system loading increasing (number of active users per processing gain); as a result, a methodology for the design and implementation of a baseband multiuser receiver structure using DSP platform is developed as well.
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Keywords: DSP, DS/CDMA, MuD, heuristic algorithms, computational complexity, performance-complexity tradeoff
Pages: 638-647
WSEAS Transactions on Communications, ISSN / E-ISSN: 1109-2742 / 2224-2864, Volume 13, 2014, Art. #70