ISSN: 1673-825X    Imprint: Chongqing University of Posts and Telecommunications Journal
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Beamforming algorithms by phase-amplitude perturbations based on improved Memetic algorithms
Received:February 24, 2009  
中文关键词:波束成型算法  改进的Memetic算法  MIMO-SDMA
英文关键词:beamforming algorithms  improved Memetic algorithms  MIMO-SDMA
Author NameAffiliation
LI Fang-wei, ZHANG Hai-bo, ZHANG Hao, GUO Tian-ke Key Lab of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China 
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      For improving the convergence performance of antennas beamforming algorithms, this paper proposes a new MIMO-SDMA of smart antennas beamforming algorithm based on research of optimization vector value of phase-amplitude perturbations by improved Memetic algorithm. Simulation results show that this algorithm has good convergence performance and convergence efficiency; the system based on the algorithm can adjustably suppress interferers by placing nulls at the directions of the interfering sources and provide a maximum main lobe in the direction of the desired signal at the same time; thus, the signal to interference ratio of the system is increased, and the uplink MIMO-SDMA can be achieved.
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