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A new Variable Error Metric adaptive beamforming Algorithm for smart antenna systems

机译:智能天线系统的新的可变误差度量自适应波束成形算法

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The use of adaptive antenna systems enables the improvement of the overall wireless network capacity, especially in Mobile Ad hoc Networks (MANET) environments in which the quality of the communication is closely related to the Signal-to-Noise-Ratio (SNR) measured in the channel. Unfortunately, most of used adaptive algorithms such as Least Mean Square (LMS) and Constant Modulus Algorithm (CMA), because are strongly related to the step size value and to the error metric estimation, usually present a speed convergence problem. In this paper, a new Variable Error Metric (VMA) adaptive Algorithm is proposed in order to limit the level of dependency between the algorithms and step size also reducing the slowing effect introduced by Mean Square Error (MSE) criterion used for example by LMS algorithm.
机译:自适应天线系统的使用可以改善整个无线网络的容量,特别是在移动自组织网络(MANET)环境中,在该环境中,通信质量与在网络中测得的信噪比(SNR)密切相关。这个频道。不幸的是,大多数使用的自适应算法,例如最小均方(LMS)和常数模算法(CMA),由于与步长值和误差度量估计密切相关,通常会出现速度收敛问题。本文提出了一种新的可变误差度量(VMA)自适应算法,以限制算法之间的依赖程度和步长,同时减少均方误差(MSE)准则(例如LMS算法)引入的减慢效果。

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