Noise removal is considered to be an efficacious step in processing any kind of data. Here the proposed model deals with removal of noise from aperiodic and piecewise constant signals by utilizing wavelet transform, which is being realized in GNU Radio platform. We have also dealt with the replacement of Universal Software Radio Peripheral with RTL-SDR for a low cost Radio Frequency Receiver system without any compromise in its efficiency. Wavelet analyzes noise level separately at each wavelet scale in time-scale domain and adapts the denoising algorithm especially for aperiodic and piecewise constant signals. GNU Radio companion serves well in analysis and synthesis of real time signals. © Springer India 2016.
U. Reshma, Ganesh, H. B. Barathi, Jyothi, J., Gandhiraj R., and Soman, K. P., “Wavelet based RTL-SDR real time signal Denoising in GNU radio”, Smart Innovation, Systems and Technologies, vol. 43, pp. 397-408, 2016.