A new structure for Digital front end in software defined radio ARCHITECTURE: applying random sampling for sample rate conversion and using DFT for channel selection

 

N. Boumaaz1,3*, A. Soulmani3, S. Crand2, J. F. Diouris 1, A. Aït Ouahman3

1 IREENA, Ecole Polytechnique de l’Université de Nantes, France

2 Institut d’Electronique et de Télécommunications de Rennes, Université Rennes 1, France

3 Laboratoire LEI, Faculté des Sciences Semlalia, Marrakech, Maroc

* Corresponding author. E-mail: n.boumaaz@gmail.com

Received: 29 June 2012; revised version accepted: 21 April 2013

Abstract

     In this work, we investigate a non-uniform sampling technique known as randomized sampling and its application to the front-end design of wideband radio equipment. It is the belief of the authors that randomized sampling holds great promise in the design of such flexible radio equipment known as software radio. Sample rate conversion and channel selection are the key functions in software radio design. We propose to realize these functions by applying the techniques of random under-sampling and an appropriate reconstruction algorithm based on Discrete Fourier Transform.

 

Keywords : Software Radio, Random Sampling, Channel Selection, Sample Rate Conversion, SVD.

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