Spectrum sensing with forward methods

Authors:
Janne J. Lehtomäki;Johanna Vartiainen;Markku Juntti;Harri Saarnisaari
Affiliations:
Centre for Wireless Communications, University of Oulu, Oulu, Finland;Centre for Wireless Communications, University of Oulu, Oulu, Finland;Centre for Wireless Communications, University of Oulu, Oulu, Finland;Centre for Wireless Communications, University of Oulu, Oulu, Finland
Venue:
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Year:
2006

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Abstract

New technologies will require effective spectrum use. Opportunistic spectrum usage that is one application of so called cognitive radio techniques enables the use of unused frequencies. One possible way to locate these free frequency bands is to use so called spectrum sensing. In this paper, energy detection based spectrum sensing methods called the forward consecutive mean excision (FCME) and forward cell averaging (CA) methods are studied in the situations where the noise power is unknown. The detection and false alarm probabilities of the studied methods are also of interest. Numerical results show that the investigated approaches have good performance.