Cristin-resultat-ID: 1024401
Sist endret: 13. januar 2014, 10:49
Resultat
Vitenskapelig foredrag
2013

Efficiency of Opportunistic Spectrum Sensing by Sequential Change Detection in Cognitive Radio

Bidragsytere:
  • Karsten Husby
  • Arne Lie og
  • Jan Erik Håkegård

Presentasjon

Navn på arrangementet: The Third International Conference on Advances in Cognitive Radio
Sted: Venice
Dato fra: 21. april 2013
Dato til: 26. april 2013

Arrangør:

Arrangørnavn: IARIA

Om resultatet

Vitenskapelig foredrag
Publiseringsår: 2013

Beskrivelse Beskrivelse

Tittel

Efficiency of Opportunistic Spectrum Sensing by Sequential Change Detection in Cognitive Radio

Sammendrag

A critical point in cognitive radio spectrum sensing is the ability to detect presence and absence of primary users as fast as possible at very low SNR. In this paper, sequential power detection by cumulative sum and recursive generalized likelihood ratio test is used to detect free spectral slots of opportunity. The benefits of these change detection algorithms are the adaptive sensing window, the low processing burden and the optimality in sense of maximum likelihood. A spectrum utilization efficiency metric is proposed that put a cost on late detections as well as on false alarms that might give rise to harmful interference into the primary system. The efficiency metric is then simulated versus the size of the free slot of opportunity and for different SNR. The detectors presented are found useful for cognitive radio.

Bidragsytere

Karsten Husby

  • Tilknyttet:
    Forfatter
    ved Sustainable Communication Technologies ved SINTEF AS
Aktiv cristin-person

Arne Lie

  • Tilknyttet:
    Forfatter
    ved Sustainable Communication Technologies ved SINTEF AS

Jan Erik Håkegård

  • Tilknyttet:
    Forfatter
    ved Sustainable Communication Technologies ved SINTEF AS
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