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Erschienen in: Wireless Personal Communications 3/2014

01.08.2014

Quickest Detection of Multi-channel Based on STFT and Compressed Sensing

verfasst von: Qi Zhao, Xiaochun Li, Zhijie Wu

Erschienen in: Wireless Personal Communications | Ausgabe 3/2014

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Abstract

This paper proposes a multi-channel quickest detection method based on compressed sensing and short-time Fourier transform. Quickest detection performs a statistical test to obtain the minimal detection delay subject to given false alarm constrains. Short-time Fourier transform, which reflects the time–frequency information, implements the multi-channel quickest detection. Compressed sensing reduces the sampling rate at first. Compared with single-channel spectrum sensing, this method substantially improves the spectrum access opportunity in time and frequency domain. The relationship between the detection delay and other parameters, such as the probability of false alarm, SNR, sparsity, and sampling rate, verifies the validity of the method. While simulation results show that this method can perform spectrum sensing in high detection probability and low probability of false alarm.

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Metadaten
Titel
Quickest Detection of Multi-channel Based on STFT and Compressed Sensing
verfasst von
Qi Zhao
Xiaochun Li
Zhijie Wu
Publikationsdatum
01.08.2014
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 3/2014
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-014-1632-3

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