Digital FMCW for ultrawideband spectrum sensing

Adnan Ahmad Cheema, Sana Salous

Research output: Contribution to journalArticle

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.
LanguageEnglish
Pages1413-1420
JournalRadio Science
Volume51
Issue number8
Early online date2 Aug 2016
DOIs
Publication statusPublished - 12 Dec 2016

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Global system for mobile communications
Wireless local area networks (WLAN)
Ultra-wideband (UWB)
Noise figure
Cognitive radio
Time measurement
Signal to noise ratio
Engines
Bandwidth

Keywords

  • FMCW
  • Spectrum sensing

Cite this

Cheema, Adnan Ahmad ; Salous, Sana. / Digital FMCW for ultrawideband spectrum sensing. In: Radio Science. 2016 ; Vol. 51, No. 8. pp. 1413-1420.
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Digital FMCW for ultrawideband spectrum sensing. / Cheema, Adnan Ahmad; Salous, Sana.

In: Radio Science, Vol. 51, No. 8, 12.12.2016, p. 1413-1420.

Research output: Contribution to journalArticle

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