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arXiv 1509.01352cs.LGcs.DCcs.ITcs.SYeess.SYmath.IT
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扩散-KLMS算法及其在非线性分布式网络中的性能分析

Diffusion-KLMS Algorithm and its Performance Analysis for Non-Linear Distributed Networks

Rangeet Mitra, Vimal Bhatia

AI总结:

本文提出一种适用于非线性分布式环境的扩散-KLMS算法,通过仿真验证其优于同类算法的收敛性能,并引入预测暂稳态行为的技术,可扩展至5G通信系统中的协同频谱感知和大规模MIMO接收机设计。

摘要:

在分布式网络环境中,扩散-最小二乘(LMS)算法比原始LMS算法收敛更快。观察到扩散-LMS通常优于其他分布式LMS算法,如空间LMS和增量LMS。然而,原始LMS和扩散-LMS在非线性环境中不适用,因为数据可能无法线性分离。文献中提出了一种称为核LMS(KLMS)的LMS变种,用于处理此类非线性。本文提出了一种适用于非线性分布式环境的扩散-LMS核化版本。仿真显示,所提方法的收敛性优于同类算法。我们还引入了一种技术,用于预测所提算法的暂态和稳态行为。本文提出的技术(或同类算法)可以轻松扩展到分布式参数估计应用,如协同频谱感知和大规模多输入多输出(MIMO)接收机设计,这些是5G通信系统中的潜在组件。

英文摘要:

In a distributed network environment, the diffusion-least mean squares (LMS) algorithm gives faster convergence than the original LMS algorithm. It has also been observed that, the diffusion-LMS generally outperforms other distributed LMS algorithms like spatial LMS and incremental LMS. However, both the original LMS and diffusion-LMS are not applicable in non-linear environments where data may not be linearly separable. A variant of LMS called kernel-LMS (KLMS) has been proposed in the literature for such non-linearities. In this paper, we propose kernelised version of diffusion-LMS for non-linear distributed environments. Simulations show that the proposed approach has superior convergence as compared to algorithms of the same genre. We also introduce a technique to predict the transient and steady-state behaviour of the proposed algorithm. The techniques proposed in this work (or algorithms of same genre) can be easily extended to distributed parameter estimation applications like cooperative spectrum sensing and massive multiple input multiple output (MIMO) receiver design which are potential components for 5G communication systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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