TIIS (한국인터넷정보학회)
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| 한글제목(Korean Title) |
Quickest Spectrum Sensing Approaches for Wideband Cognitive Radio Based On STFT and CS |
| 영문제목(English Title) |
Quickest Spectrum Sensing Approaches for Wideband Cognitive Radio Based On STFT and CS |
| 저자(Author) |
Qi Zhao
Wei Qiu
Boxue Zhang
Bingqian Wang
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| 원문수록처(Citation) |
VOL 13 NO. 03 PP. 1199 ~ 1212 (2019. 03) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
This paper proposes two wideband spectrum sensing approaches: (i) method A, the cumulative sum (CUSUM) algorithm with short-time Fourier transform, taking advantage of the time-frequency analysis for wideband spectrum. (ii)method B, the quickest spectrum sensing with short-time Fourier transform and compressed sensing, shortening the time of perception and improving the speed of spectrum access or exit. Moreover, method B can take advantage of the sparsity of wideband signals, sampling in the sub-Nyquist rate, and it is more suitable for wideband spectrum sensing. Simulation results show that method A significantly outperforms the single serial CUSUM detection for small SNRs, while method B is substantially better than the block detection based spectrum sensing in small probability of the false alarm.
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| 키워드(Keyword) |
Quickest detection
CUSUM
Spectrum sensing
STFT
Compressed sensing
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| 파일첨부 |
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