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Digital FMCW for ultrawideband spectrum sensing

Cheema, A.; Salous, S.

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Authors

A. Cheema



Abstract

An ultrawideband digital frequency-modulated continuous wave sensing engine is proposed as an alternative technique for cognitive radio applications. A dual-band demonstrator capable of sensing 750 MHz bandwidth in 204.8 µs is presented. Its performance is illustrated from both bench tests and from real-time measurements of the GSM 900 band and the 2.4 GHz wireless local area network (WLAN) band. The measured sensitivity and noise figure values are −90 dBm for a signal-to-noise ratio margin of at least 10 dB and ~13–14 dB, respectively. Data were collected over 24 h and were analyzed by using the energy detection method. The obtained results show the time variability of occupancy, and considerable sections of the spectrum are unoccupied. In addition, unlike the cyclic temporal variations of spectrum occupancy in the GSM 900 band, the detected variations in the 2.4 GHz WLAN band have an impulsive nature.

Citation

Cheema, A., & Salous, S. (2016). Digital FMCW for ultrawideband spectrum sensing. Radio Science, 51(8), 1413-1420. https://doi.org/10.1002/2016rs006083

Journal Article Type Article
Acceptance Date Jul 28, 2016
Online Publication Date Aug 25, 2016
Publication Date Aug 25, 2016
Deposit Date Oct 17, 2016
Publicly Available Date Jan 25, 2017
Journal Radio Science
Print ISSN 0048-6604
Electronic ISSN 1944-799X
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 51
Issue 8
Pages 1413-1420
DOI https://doi.org/10.1002/2016rs006083
Public URL https://durham-repository.worktribe.com/output/1372632

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Copyright Statement
Cheema, A. A., and S. Salous (2016), Digital FMCW for ultrawideband spectrum sensing, Radio Sci., 51, 1413-1420, doi:10.1002/2016RS006083. To view the published open abstract, go to https://doi.org/ and enter the DOI.






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