Digital FMCW for ultrawideband spectrum sensing

Cheema, A.; Salous, S.

doi:10.1002/2016rs006083

Digital FMCW for ultrawideband spectrum sensing

Cheema, A.; Salous, S.

Authors

A. Cheema

Professor Sana Salous sana.salous@durham.ac.uk
Professor

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

Files

Published Journal Article (817 Kb)
PDF

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.