Title :
A Disruptive Receiver Architecture Dedicated to Software-Defined Radio
Author :
Rivet, Francois ; Deval, Yann ; Begueret, Jean-Baptiste ; Dallet, Dominique ; Cathelin, Philippe ; Belot, Didier
Author_Institution :
Univ. of Bordeaux, Talence
fDate :
4/1/2008 12:00:00 AM
Abstract :
The next generation of mobile terminals is faced with the emergence of the software-defined radio (SDR) concept. The communication devices tend to provide various wireless services through a multi-functional, multi-mode and multi-standard terminal. The SDR concept aims at designing a re-configurable radio architecture accepting all cellular or noncellular standards working in the 0-5-GHz frequency range. Some technical challenges have to be solved in order to address this concept. Working in the digital domain may be a solution but the analog-to-digital conversion cannot be done at Radio Frequencies, at an acceptable resolution and at an acceptable level of power consumption. The idea proposed here was to interface an analog pre-processing circuit between the antenna and a digital signal processor to pre-condition the RF signal. It uses the principle of a fast Fourier transform to carry out basic functions with high accuracy in a low-cost technology like CMOS. This paper presents the design and the behavioral simulations of this analog discrete-time device which gives the hardware flexibility required for a cognitive radio component.
Keywords :
cellular radio; cognitive radio; fast Fourier transforms; radio receivers; software radio; analog-to-digital conversion; cognitive radio; discrete-time device; disruptive receiver architecture; fast Fourier transform; mobile terminals; multifunctional terminal; multimode terminal; multistandard terminal; reconfigurable radio architecture; software-defined radio; wireless vices; Analog signal processing; cognitive radio; sampled analog signal processor; software-defined radio (SDR);
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2008.919512