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Performance analysis of kernel based adaptive beamforming for smart antenna systems

机译:智能天线系统中基于核的自适应波束成形性能分析

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摘要

In this paper, kernel based adaptive algorithms for smart antenna systems are considered to achieve the best weight vector for beamforming by iteration process. Smart antenna systems radiate not only narrow beams towards desired signal directions, but also place deep nulls in the undesired signal directions, thus optimizing the signal quality, and enhancing the coverage range. The performance of the algorithms are studied with parameters, like convergence speed and minimum mean square error. Based on simulation results, it is proved that kernel based adaptive algorithm provides better performance in terms of weight convergence, null steering and power gain over that of the traditional least square algorithm. Therefore, the kernel based algorithm gives a cost effective solution in mobile communication under dynamic channel environment to enhance capacity and range.
机译:本文考虑了基于内核的智能天线系统自适应算法,以通过迭代过程实现波束成形的最佳权向量。智能天线系统不仅向期望的信号方向辐射窄波束,而且在不希望的信号方向上放置深的零点,从而优化了信号质量,并扩大了覆盖范围。使用诸如收敛速度和最小均方误差之类的参数研究算法的性能。仿真结果表明,与传统的最小二乘算法相比,基于核的自适应算法在权重收敛,零转向和功率增益方面具有更好的性能。因此,基于内核的算法为动态信道环境下的移动通信提供了一种经济高效的解决方案,以增强容量和范围。

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