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On-chip wavelet denoising system implemented with analogue circuits

On-chip wavelet denoising system implemented with analogue circuits

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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.

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