On‐chip wavelet denoising system implemented with analogue circuits
Marco A. Gurrola-Navarro, Roberto Carrasco-Alvarez, Agustin S. Medina-Vazquez, Guillermo Espinosa-Flores-Verdad · Electronics Letters · 2013
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.