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Real-time wide-band spectrum sensing for cognitive radio

TitleReal-time wide-band spectrum sensing for cognitive radio
Publication TypeConference Paper
Year of Publication2011
AuthorsLiu, W., O. Yaron, I. Moerman, S. Bouckaert, B. Jooris, and P. Demeester
Conference Name18th IEEE Symposium on Communications and Vehicular Technology in the Benelux (SCVT)
Date Published10/2011
Conference LocationGhent, Belgium
ISBN Number978-1-4577-1287-6

Cognitive radio has received considerable amount of attention as a promising technique to provide dynamic spectrum allocation. Wide-band spectrum sensing is the corner stone for cognitive radio to be functional. Most existing commercial sensing solutions lack either the required flexibility or speed. Software-defined radio (SDR) on the other hand offers very high flexibility and therefore becomes a common platform for CR implementation. Among various SDR platforms, the universal software-defined radio peripheral (USRP) gained broad popularity. This paper presents a real-time wide-band-capable spectrum sensing solution based on USRP. The concept of energy detection and the methodology for wide-band sensing are explained. Finally, the performance of the proposed sensing solution is verified and compared with another popular commercial sensing solution, Airmagnet.