5th International ICST Conference on Wireless Internet

Research Article

Performance of an adaptive PSO partial parallel interference canceller for CDMA communication systems

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  • @INPROCEEDINGS{10.4108/ICST.WICON2010.8626,
        author={Chia-Hsin Cheng and Hsi-Chou Hsu and Yung-Fa Huang and Jyh-Horng Wen and Ling-Cheng Hsu},
        title={Performance of an adaptive PSO partial parallel interference canceller for CDMA communication systems},
        proceedings={5th International ICST Conference on Wireless Internet},
        publisher={IEEE},
        proceedings_a={WICON},
        year={2010},
        month={4},
        keywords={CDMA partial parallel interference cancellation partial cancellation weight PSO},
        doi={10.4108/ICST.WICON2010.8626}
    }
    
  • Chia-Hsin Cheng
    Hsi-Chou Hsu
    Yung-Fa Huang
    Jyh-Horng Wen
    Ling-Cheng Hsu
    Year: 2010
    Performance of an adaptive PSO partial parallel interference canceller for CDMA communication systems
    WICON
    IEEE
    DOI: 10.4108/ICST.WICON2010.8626
Chia-Hsin Cheng1,*, Hsi-Chou Hsu2, Yung-Fa Huang3, Jyh-Horng Wen4, Ling-Cheng Hsu3
  • 1: The Department of Electrical Engineering, National Formosa University, Yunlin County, Taiwan
  • 2: The Department of Computer and Communication Engineering, National Pingtung Institute of Commerce, Pingtung City, Taiwan
  • 3: The Department of Information and Communication Engineering, Chaoyang University of Technology, Taichung County, Taiwan
  • 4: The Department of Electrical Engineering, Tung Hai University, Taichung City, Taiwan
*Contact email: chcheng@nfu.edu.tw

Abstract

In this paper, we propose an adaptive particle swarm optimization (APSO) based partial parallel interference cancellation scheme for direct-sequence code-decision multiple access (CDMA) communication system over frequency selective fading channels. However, the partial cancellation tries to reduce the cancellation error in parallel interference cancellation schemes due to the wrong interference estimations in the early stages. Thus, in order to reduce the computational complexity and improve the performance of the CDMA system, particle swarm optimization (PSO), which has the ability of solution to complex combinatorial optimization problem, is employed in searching the optimal weight for multiple access interference cancellation. Experiments have been carried out on the method can improved on the multiuser detection in CDMA system, the simulation results show that APSO detector can achieve the global optimization in fast convergence rate, and also show that the proposed detector is obviously superior to conventional receiver and multiuser detectors based on some optimum algorithm in terms of the multiple access interfere and the mitigation of near-far effect.