Article


Article Code : 13930730145762793(DOI : 10.7508/jist.2014.01.006)

Article Title : PSO-Algorithm-Assisted Multiuser Detection for Multiuser and Inter-symbol Interference Suppression in CDMA Communications

Journal Number : 5 Winter 2014

Visited : 1466

Files : 443 KB


List of Authors

  Full Name Email Grade Degree Corresponding Author
1 Atefeh Haji Jamali Arani a.hajijamali@gmail.com - PhD.Student
2 Paeiz Azmi pazmi@modares.ac.ir Professor PhD

Abstract

Applying particle swarm optimization (PSO) algorithm has become a widespread heuristic technique in many fields of engineering. In this paper, we apply PSO algorithm in additive white Gaussian noise (AWGN) and multipath fading channels. In the proposed method, PSO algorithm was applied to solve joint multiuser and inter-symbol interference (ISI) suppression problems in the code-division multiple-access (CDMA) systems over multipath Rayleigh fading channel and consequently, to reduce the computational complexity. At the first stage, to initialize the POS algorithm, conventional detector (CD) was employed. Then, time-varying acceleration coefficients (TVAC) were used in the PSO algorithm. The simulation results indicated that the performance of PSO-based multiuser detection (MUD) with TVAC is promising and it is outperforming the CD.