基于幅相扰动的改进Memetic算法的波束成型算法
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国家科技重大专项(2009ZX03001-004);重庆市重大产业技术开发项目(20091537);重庆市发改委资金资助项目(20041072)


Beamforming algorithms by phase-amplitude perturbations based on improved Memetic algorithms
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    摘要:

    为了提高天线波束成型算法的收敛性能,基于改进的Memetic算法对幅相扰动最优权值的搜索,提出了一种新的上行MIMO-SDMA智能天线系统的波束成型算法。仿真结果表明,该算法具有很好的收敛性能和较高的效率,基于该算法的智能天线系统不仅能够对干扰方向进行自适应控零而且还能同时使最大增益主瓣与期望信号的方向一致,使系统的信噪比得到提高,很好地实现上行MIMO-SDMA。

    Abstract:

    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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李方伟,张海波,张浩,郭天科.基于幅相扰动的改进Memetic算法的波束成型算法[J].重庆邮电大学学报(自然科学版),2010,22(1):1-5.

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  • 收稿日期:2009-02-24
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