Title :
On-chip wavelet denoising system implemented with analogue circuits
Author :
Gurrola-Navarro, M.A. ; Carrasco-Alvarez, R. ; Medina-Vazquez, A.S. ; Espinosa-Flores-Verdad, G.
Author_Institution :
Dipt. de Electron., Univ. de Guadalajara, Guadalajara, Mexico
Abstract :
An adaptation of the hard-thresholding denoising method for analogue circuits is presented. The proposed approach has been proved with a chip fabricated in 0.5 μm CMOS technology. The system works for signals contaminated with white Gaussian noise in the range 100 kHz to 1.6 MHz. On-chip measurements demonstrate a noise reduction up to 7 dB.
Keywords :
CMOS analogue integrated circuits; signal denoising; wavelet transforms; CMOS technology; analogue circuits; hard-thresholding denoising method; on-chip wavelet denoising system;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2013.0472
