Centre for Wireless Communications (CWC), University of Oulu
Vartiainen,Johanna
Centre for Wireless Communications (CWC), University of Oulu
Saarnisaari,Harri
Centre for Wireless Communications (CWC), University of Oulu
Juntti,Markku
Centre for Wireless Communications (CWC), University of Oulu
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.
Janne Lehtomäki received the M.Sc. degree in information engineering from University of Oulu, Finland, in 1998 and the Ph.D.(eng) from University of Oulu, Finland, in 2005. Currently he is a research scientist in Centre for Wireless Communications (CWC) at the University of Oulu, Finland. His research interests lie in signal detection, statistical signal processing, and networks.