Nacera Larbi

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The combination of OFDM and Code Division Multiple Access (CDMA) is seen as an attractive and practical solution to enhance the throughput and/or robustness for future high-speed indoor WLANs. The multi-path Rayleigh channel represents a hostile environment for WLANs communication. So, we have proposed the MC-CDMA system to overcome the impact of this kind(More)
This paper reviews the performances of three heuristic near-optimum Multiuser Detection (MuD) approaches applied to the synchronous Multicarrier Code Division Multiple Access (MC-CDMA) communication systems. Genetic Algorithm (GA), Particle Swarm Optimization (PSO) and Ant-Colony Optimization (ACO) heuristic MuD detection algorithms are analyzed in details.(More)
There have been extensive research efforts on simulating Wireless Local Area Networks. Many papers have studied the performance of IEEE 802.11 WLANs by using simulation under different channels and for different modulations. In this paper we first simulate a simplified IEEE 802.11a standard based on Orthogonal Frequency Division Multiplexing (OFDM) with the(More)
Using Spider monkey optimization (SMO) has become a common heuristic technique in many fields of engineering. In this paper, we apply SMO to solve near far effect problems in code division multiple access (CDMA) system, to reduce the computational complexity. The new approach is successfully tested in CDMA multiuser situation. The simulation results show(More)
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