Spectrum Sensing schemes in Cognitive Radio systems are fundamental elements for a complete opportunistic communication technology. They usually reveal the presence of occupied bands without performing a measurement of the spectrum portion actually occupied. Considering that the final aim of Cognitive Radios is the exploitation, in the most efficient way, of the spectrum holes left free by primary users, the measurement of the actual occupied spectrum becomes a fundamental task. In this framework, this paper proposes a two-stage spectrum sensing method, tailored to work in TV bands, offering a good detection of the occupied bands with selectable false alarm rates (Stage 1) and an accurate measurement of the real occupied spectrum (Stage 2). Performance results, achieved in simulation and emulation environments, prove the method's goodness and robustness to non-idealities of real acquisition systems. A comparison, with another two-stage method available in literature, has confirmed its efficacy in real contexts.

Performance analysis of a two-stage spectrum sensing scheme for dynamic spectrum access in TV bands

Capriglione, Domenico;
2019-01-01

Abstract

Spectrum Sensing schemes in Cognitive Radio systems are fundamental elements for a complete opportunistic communication technology. They usually reveal the presence of occupied bands without performing a measurement of the spectrum portion actually occupied. Considering that the final aim of Cognitive Radios is the exploitation, in the most efficient way, of the spectrum holes left free by primary users, the measurement of the actual occupied spectrum becomes a fundamental task. In this framework, this paper proposes a two-stage spectrum sensing method, tailored to work in TV bands, offering a good detection of the occupied bands with selectable false alarm rates (Stage 1) and an accurate measurement of the real occupied spectrum (Stage 2). Performance results, achieved in simulation and emulation environments, prove the method's goodness and robustness to non-idealities of real acquisition systems. A comparison, with another two-stage method available in literature, has confirmed its efficacy in real contexts.
File in questo prodotto:
File Dimensione Formato  
67 Capriglione Post-print.pdf

accesso aperto

Descrizione: 0263-2241/Ó 2018 Elsevier Ltd. All rights reserved. Link editore: https://doi.org/10.1016/j.measurement.2018.12.020
Tipologia: Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza: Creative commons
Dimensione 913.08 kB
Formato Adobe PDF
913.08 kB Adobe PDF Visualizza/Apri
67 Capriglione Definitivo.pdf

non disponibili

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 1.65 MB
Formato Adobe PDF
1.65 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4719592
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 16
  • ???jsp.display-item.citation.isi??? 14
social impact