The Spectrum Sensing is a fundamental functionality of the Cognitive Radio (CR) paradigm since a reliable detection of the presence of spectral holes is a mandatory requirement to avoid harmful interferences to licensed users. In this paper, we address this problem by proposing a widely linear (WL) cooperative strategy at a fusion center side where the CR user statistics have been received by means of multipath fading channels. The proposed strategy jointly elaborates the received signal and its conjugate version to take advantage by the information contained in the statistical pseudo-covariance function of the received signal. We design the WL strategy to maximize a modified deflection coefficient and we compare it with a strictly linear (SL) cooperative strategy. Results of numerical simulations show that the WL fusion-rule outperforms the SL one in operative conditions of practical interest.

Widely Linear Cooperative Spectrum Sensing for Cognitive Radio Networks / Cacciapuoti, ANGELA SARA; Caleffi, Marcello; Paura, Luigi. - (2010), pp. 1-5. (Intervento presentato al convegno IEEE GlobeCom '10: the IEEE Global Communications Conference tenutosi a Miami, FL, USA nel December 6-10, 2010) [10.1109/GLOCOM.2010.5683198].

Widely Linear Cooperative Spectrum Sensing for Cognitive Radio Networks

CACCIAPUOTI, ANGELA SARA;CALEFFI, MARCELLO;PAURA, LUIGI
2010

Abstract

The Spectrum Sensing is a fundamental functionality of the Cognitive Radio (CR) paradigm since a reliable detection of the presence of spectral holes is a mandatory requirement to avoid harmful interferences to licensed users. In this paper, we address this problem by proposing a widely linear (WL) cooperative strategy at a fusion center side where the CR user statistics have been received by means of multipath fading channels. The proposed strategy jointly elaborates the received signal and its conjugate version to take advantage by the information contained in the statistical pseudo-covariance function of the received signal. We design the WL strategy to maximize a modified deflection coefficient and we compare it with a strictly linear (SL) cooperative strategy. Results of numerical simulations show that the WL fusion-rule outperforms the SL one in operative conditions of practical interest.
2010
9781424456369
9781424456376
Widely Linear Cooperative Spectrum Sensing for Cognitive Radio Networks / Cacciapuoti, ANGELA SARA; Caleffi, Marcello; Paura, Luigi. - (2010), pp. 1-5. (Intervento presentato al convegno IEEE GlobeCom '10: the IEEE Global Communications Conference tenutosi a Miami, FL, USA nel December 6-10, 2010) [10.1109/GLOCOM.2010.5683198].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/373977
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