演示了一种评估ICA技术性能的观察工具

K. N. Nair, A. Unnikrishnan, B. Lethakumary
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引用次数: 2

摘要

盲源分离背后的动机是分离混合源,特别是在源和混合过程都未知的盲情况下,如果需要从混合物中恢复所有源,本文揭示了盲信源分离技术中可能出现的混频环境。本文比较了主成分分析(PCA)技术和独立成分分析(ICA)技术的性能。所使用的脱混过程是基于峰度的最大化。脱混程度由脱混输出相关矩阵中非对角线元素的缩放后的强度来评价。通过Matlab仿真,并辅以分离信号间的图、散点图、条形图,有效地体现了峰度最大化对源分离性能的优越性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Demonstration of an observation tool to evaluate the performance of ICA technique
The motivation behind the Blind source separation is to separate the mixed sources, in particular for the blind case where both the sources and mixing process are unknown and if desirable to recover all the sources from the mixtures,. The paper reveals the blind source separation techniques, the mixing environment probably occurs with signals. The present work compares the performance of the Principal Component Analysis (PCA) technique and Independent component analysis (ICA). The demixing process used is based on the maximization of Kurtosis. The extent of demixing is assessed from the strength of the scaled version of off diagonal elements in the correlation matrix of demixed output. The Matlab simulation supplemented by plots, scatter, and bar diagrams between signal separated brings out effectively the superiority in the performance of the maximization of Kurtosis for source separation.
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