Time-frequency compressed spectrum sensing in cognitive radios
Author | Monfared, Shaghayegh S.M. |
Author | Taherpour, Abbas |
Author | Khattab, Tamer |
Available date | 2022-11-01T09:01:33Z |
Publication Date | 2013 |
Publication Name | GLOBECOM - IEEE Global Telecommunications Conference |
Resource | Scopus |
Resource | 2-s2.0-84904105707 |
Abstract | In this paper, we investigate the use of time-frequency analysis for improvement of spectrum sensing in cognitive radios and exploit compressed sensing (sampling) to reduce the extremely high sampling rate of signal in time-frequency plane. We suggest a non-parametric spectrum sensing technique similar to energy detection utilizing time-frequency analysis to generally compromise between accuracy and sensing time, though the computational cost is significantly increased. As the representation of signals on the time-frequency plane is intrinsically sparse, thus we use the compressed sensing to achieve a significant reduction in the number of measurements. We propose using of different time-frequency representation such as short time Fourier transform, wavelet, Wigner-Ville and pseudo Wigner-Ville distribution in conduction of compressed sampling technique. The simulation results evaluate the performance of the proposed time-frequency compressed detectors compared to other time-frequency and energy detectors using basis pursuit and Bayesian compressive sensing reconstruction algorithms for AWGN and also Rayleigh and Rician fading channels. 2013 IEEE. |
Language | en |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Subject | Channel estimation Cognitive radio Communication Rayleigh fading Sensors Signal analysis Signal detection Signal reconstruction Wigner-Ville distribution Bayesian compressive sensing Compressed spectrum sensing Rayleigh and Rician fading channels Reconstruction algorithms Short time Fourier transforms Spectrum sensing techniques Time frequency analysis Time-frequency representations Compressed sensing |
Type | Conference Paper |
Pagination | 1088-1094 |
Files in this item
Files | Size | Format | View |
---|---|---|---|
There are no files associated with this item. |
This item appears in the following Collection(s)
-
Electrical Engineering [2611 items ]