心电信号降噪的VLSI收缩结构实现

K Vishnusaravanabharathi, J. Dhanasekar, Teresa, B. Selvaraj
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引用次数: 0

摘要

不同形式的噪声是由心电图(ECG)信号引起的,这些信号根据频率内容而变化。为了提高准确性和可靠性,消除这种麻烦是必要的。心电指标的去噪是一个难点,因为很难加入安全系数滤波器。可以使用自适应滤波技术,其中特征向量可以改变为最高的动态信号变化。随着一定程度的稀疏,如非稀疏、部分稀疏和稀疏,框架会发生变化。最小均方(LMS)和零吸引子LMS (ZA-LMS)凸滤波组合对于稀疏和非稀疏设置都是理想的。在提出的设计中,从提高器件效率和减少组合延迟路径的角度引入了收缩结构。收缩架构使用Xilinx设备生成器工具开发,用于正常最小均方(LMS),零吸引子LMS (ZA-LMS)以及最小均方(LMS)和零吸引子LMS (ZA-LMS)接口的凸组合。将从MIT-BIH数据库中获取的各种心电信号作为设计滤波器的输入进行仿真,得到了设计滤波器的信噪比。研究表明,收缩期结构的信噪比高于滤波器组结构。对于收缩LMS缓冲,信噪比值比LMS算法的结构高4.5%。ZA-LMS收缩分离技术的信噪比比ZA-LMS分离技术高2.5%。LMS和ZA-LMS滤波结构收缩凸组合的信噪比比LMS和ZA-LMS滤波结构凸组合高6%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
VLSI Systolic Architecture Implementation for Noise Elimination from ECG Signal
Different forms of noise are caused by electrocardiogram (ECG) signals, which vary founded on frequency content. To enhance accurateness and dependability, the elimination of such a trouble is necessary. Denoising ECG pointers is difficult as it is difficult to add secure coefficient filter. It is possible to use adaptive filtering techniques, in which the feature vectors can be changed to top dynamic signal changes. With a degree of sparsity, such as non-sparse, partial sparse and sparse, the framework shifts. The Least Mean Square (LMS) and Zero Attractor LMS (ZA-LMS) convex filtering combination is ideal for both Sparse and Non-Sparse settings. Popular the proposed design, the Systolic Architecture is introduced in direction to improve device efficiency and to reduce the combinational delay path. Systolic architectures are developed using the Xilinx device generator tool for normal Least Mean Square (LMS), Zero Attractor LMS (ZA-LMS) and Convex combinations of Least Mean Square (LMS) and Zero Attractor LMS (ZA-LMS) interfaces.Simulation remains performed with various ECG signals obtained from MIT-BIH database as input to designed filtering and its SNR is obtained. The study shows that the SNR value in systolic architectures is higher than in filter bank structures. For systolic LMS buffers, the SNR value is 4.5 percent greater than the structure of the Lms algorithm. The SNR for the systolic separation technology of ZA-LMS is 2.5 percent higher than the separation technology of ZA-LMS. The SNR value for LMS and ZA-LMS filtering structure systolic convex combinations is 6% higher than that for LMS and ZA-LMS filtering structure convex combinations.
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