Product category: Stand-Alone Instruments
News Release from: Tektronix
Edited by the Electronicstalk Editorial Team on 18 August 2005
Research targets cognitive radio technology
Tektronix is conducting joint research with the Mobile and Portable Radio Research Group at Virginia Tech in the development of cognitive radio technology
Tektronix is conducting joint research with the Mobile and Portable Radio Research Group (MPRG) at Virginia Tech in the development of cognitive radio (CR) technology. This extends a research relationship with Virginia Tech that began with developing integrated solutions for characterising and testing software defined radio (SDR).
This article was originally published on Electronicstalk on 18 August 2005 at 8.00am (UK)
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CR is the evolution of SDR and the joint research is the first effort to establish a test methodology for cognitive algorithms which will enable a radio to be aware of its environment.
The use of cognitive radio will provide flexible spectrum utilisation to meet the dynamic needs of commercial and military/government customers.
CR builds on SDR to adapt to changing communications protocols and inserts a new element - the ability to recognise its environment and learn, by drawing on artificial intelligence.
CR can sense its environment and location and then alter its power, frequency, modulation and other parameters for more efficient spectrum utilisation - negotiating the best transmission path to overcome obstacles.
In contrast, today's radios are fixed to operate within spectrum blocks as authorised by a country's communications agencies.
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Additionally, CR could, in theory, allow multidimensional reuse of spectrum in space, frequency and time, significantly reducing the spectrum and bandwidth limitations that have impeded wireless technology expansion in the USA and the world.
'The use of cognitive radio technology has the potential to vastly improve the efficiency of spectrum usage at a time when there is a scarcity of available spectrum and wireless communication services are rapidly increasing', said Jeff Reed, Professor and Deputy Director, Mobile and Portable Radio Research Group (MPRG) at Virginia Tech.
'Our joint research is the first of its kind and will provide a repeatable test methodology for the testing and validation of cognitive radio software algorithms and we expect, in the future, that this design will serve as a test bed for manufacturers to use in developing products'.
'Tektronix test technology is fundamental to the success of our research to validate the use and operation of cognitive radio and we are very excited to continue to build on our relationship'.
MPRG's Open Source SCA (Software Communications Architecture) OSSIE implementation has already been successfully integrated with existing Tektronix equipment in support of SDR.
Tektronix provides a unique capability of real-time spectral and digital time-domain analysis tools.
This integrated approach, enables engineers to simultaneously evaluate the RF, baseband and DSP logic associated with a given spectral event, a critical validation step in the design of cognitive radios.
Tektronix will continue to assist in providing test and measurement equipment in support of the OSSIE test bed for engineers doing cognitive radio development.
'We are pleased to be extending our relationship with Virginia Tech, one of the nation's premier academic institutions', said Rich McBee, Sr Vice President, Tektronix Communications Business.
'Test equipment is crucial to enable the development of efficient cognitive radio systems that marry artificial intelligence with radio technology and drive innovation for the future of wireless communications'.
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