Title :
Simplified DFT: A novel method for wideband spectrum sensing in cognitive radio
Author :
Miar, Yasin ; D´Amours, C. ; Yongacoglu, Abbas ; Aboulnasr, Tyseer
Author_Institution :
Schoo l of Inf. Technol. & Eng., Univ. of Ottawa, Ottawa, ON, Canada
Abstract :
Four simplified discrete Fourier transform (SDFT)-based spectrum sensing methods are introduced for power spectral density (PSD) estimation for cognitive radio (CR). The SDFT-based spectrum sensing techniques are less computationally complex than DFT techniques since no multiplications are required in the time-to-frequency domain conversion process. The simulation results and mathematical analyses indicate that the performance of the SDFT-based spectrum sensing method is comparable to that of the DFT-based one when the received signal spectrum is lightly occupied.
Keywords :
broadband networks; cognitive radio; discrete Fourier transforms; DFT; cognitive radio; discrete Fourier transform; power spectral density estimation; wideband spectrum sensing; Discrete Fourier transforms; Estimation; Frequency estimation; Image edge detection; Mathematical model; Sensors; Signal to noise ratio;
Conference_Titel :
New Frontiers in Dynamic Spectrum Access Networks (DySPAN), 2011 IEEE Symposium on
Conference_Location :
Aachen
Print_ISBN :
978-1-4577-0177-1
Electronic_ISBN :
978-1-4577-0176-4
DOI :
10.1109/DYSPAN.2011.5936262
