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Sequential Spectrum Sensing Algorithm Utilizing DFT  

Jung, Hoi-Yoon (한국전자통신연구원 방송통신융합부문 인지무선연구팀)
Lim, Sun-Min (한국전자통신연구원 방송통신융합부문 인지무선연구팀)
Song, Myung-Sun (한국전자통신연구원 방송통신융합부문 인지무선연구팀)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.5A, 2010 , pp. 490-495 More about this Journal
Abstract
In this paper, we propose an sequential spectrum sensing algorithm utilizing DFT. The conventional sensing algorithm using FFT contains redundant computation due to the characteristic of FFT which computes all frequency components at one time. The proposed sensing algorithm utilizing DFT computes a frequency component once at a time according to the priority and decides presence of signal. The proposed sensing algorithm can provide similar detection performance to the conventional scheme while computations of the sensing process could be reduced significantly depends on an early detection of signal.
Keywords
Cognitive Radio; Spectrum Sensing; DFT; FFT; Signal Detection;
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  • Reference
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