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A Disruptive Software-Defined Radio Receiver Architecture Based on Sampled Analog Signal Processing

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5 Author(s)

Software defined radio (SDR) aims at bringing digital treatment chip closer to the antenna in a mobile terminal architecture. The main goal is to create a re-configurable radio architecture accepting all the cellular or non-cellular standards working in the 0-5 GHz frequency range. But, in this environment, the analog to digital conversion and the digital operations face issues like power supply and processing speed. The idea is to interface a preprocessing circuit between the antenna and a digital signal processor (DSP) to pre-condition the RF signal. This paper presents the design of an analog discrete-time device located between antenna and a DSP in standard radio architecture. It uses the principle of the discrete Fourier transform (DFT) to reduce the frequency of the DSP-input-signal treatment to fulfil the SDR purpose. It has been validated through system level simulation.

Published in:

Radio Frequency Integrated Circuits (RFIC) Symposium, 2007 IEEE

Date of Conference:

3-5 June 2007

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