USRP and GNURadio for prototyping radiofrequency communication algorithms R´ etornaz & al. Introduction Soft Radio Example of USRP uses Measurement of acoustic sensor Conclusion USRP and GNURadio for prototyping radiofrequency communication algorithms T. R´ etornaz 1 , J.M. Friedt 1 , G. Martin 2 & S. Ballandras 1,2 1 Senseor, Besan¸ con 2 FEMTO-ST/CNRS,Besan¸con 6 juillet 2009 1 / 25
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USRP andGNURadio for
prototypingradiofrequencycommunication
algorithms
Retornaz & al.
Introduction
Soft Radio
Example ofUSRP uses
Measurement ofacoustic sensor
Conclusion
USRP and GNURadio for prototypingradiofrequency communication algorithms
T. Retornaz1, J.M. Friedt1, G. Martin2 & S. Ballandras1,2
1Senseor, Besancon2FEMTO-ST/CNRS, Besancon
6 juillet 2009
1 / 25
USRP andGNURadio for
prototypingradiofrequencycommunication
algorithms
Retornaz & al.
Introduction
Soft Radio
Example ofUSRP uses
Measurement ofacoustic sensor
Conclusion
Radiofrequency circuitprototyping :
� basic blocks assembled : fragile and large, incompatible with use onthe field (outdoor)
� dedicated circuit : lengthy and costly manufacturing + hardwaredebug in parallel to software development
⇒ USRP (Universal Software Radio Peripheral) provides a flexible set ofhardware and software toolset
GNU Radio Applications� A TiVo equivalent for radio, capable of recording multiple stations
simultaneously.
� Time Division Multiple Access (TDMA) waveforms.
� A passive radar system that takes advantage of broadcast TV for itssignal source. For those of you with old TVs hooked to antennas,think about the flutter you see when airplanes fly over.
� Radio astronomy.
� Digital Radio Mundial (DRM).
� Software GPS.
� Distributed sensor networks.
� Distributed measurement of spectrum utilization.
� Demonstration of the use of software defined radio for rapidprototyping of acoustic sensor interrogation algorithms
� Experimental measurements performed on resonators and delay linesusing USRP
Further work :
� move part of the processing from PC to FPGA (automaticfrequency tuning, received power detection)
� automatic gain control to tune emitted power as a function ofreceived signal strength
References :
� J.-M Friedt, T. Retornaz, G. Martin, T. Laroche, J.-P. Simonnet, E.Carry, S. Ballandras Surface Acoustic Wave Resonators as PassiveBuried Sensors 2009 EFTF/IFCS (April 2009).