Lp - Norm spectrum sensing for cognitive radio networks impaired by non-Gaussian noise
Moghimi F, Nasri A, Schober R (2009)
Publication Type: Conference contribution
Publication year: 2009
Conference Proceedings Title: GLOBECOM - IEEE Global Telecommunications Conference
Event location: Honolulu, HI
ISBN: 9781424441488
DOI: 10.1109/GLOCOM.2009.5425992
Abstract
In cognitive radio (CR) systems reliable spectrum sensing techniques are required in order to avoid interference to the primary users of the spectrum. Whereas most of the existing literature on spectrum sensing considers impairment by additive white Gaussian noise (AWGN) only, in practice, CRs also have to cope with various types of non - Gaussian noise such as man - made impulsive noise, co - channel interference, and ultra - wideband interference. In this paper, we propose robust Lp - norm detectors which do not require any a priori knowledge about the primary user signal and perform well for a wide range of non - Gaussian noises. Furthermore, we analyze the probabilities of false alarm and missed detection of the proposed detectors in the low signal - to - noise ratio regime. For optimization of Lp - norm detection we propose a direct approach based on minimization of the probability of false alarm for a given probability of missed detection and a simpler approach based on maximization of the deflection coefficient of the detector. Analytical and simulation results show that the proposed Lp - norm detectors achieve significant performance gains over conventional energy detection in non-Gaussian noise.
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APA:
Moghimi, F., Nasri, A., & Schober, R. (2009). Lp - Norm spectrum sensing for cognitive radio networks impaired by non-Gaussian noise. In GLOBECOM - IEEE Global Telecommunications Conference. Honolulu, HI, US.
MLA:
Moghimi, Farzad, Amir Nasri, and Robert Schober. "Lp - Norm spectrum sensing for cognitive radio networks impaired by non-Gaussian noise." Proceedings of the 2009 IEEE Global Telecommunications Conference, GLOBECOM 2009, Honolulu, HI 2009.
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