Applying Generalized Urn Models to Cognitive Radio Networks

Abstract: 

In this paper the capability of a cognitive radio network to discover available frequency channels in the spectrum licensed to a primary user (e.g., digital TV) is analyzed. We rely on cooperative sensing where fusion of individual sensing outcomes is based on the r-out-of-k decision rule. The study is carried out assuming the point of view of a tagged network of cognitive devices that is surrounded by other uncoordinated transmitters competing for accessing the same portion of the spectrum. The contributions of this work are the following. First, the introduction of a three-state model of the wireless hannel. Second, modeling the sensing process by means of the general framework provided by urn occupancy problems accessed in non-uniform fashion. Third, the evaluation of the number of available channels in the presence of interference limiting spectrum availability. Finally, the proposal of a cognitive protocol to mitigate the interference. Results are given for a specific case of interest where all networks are supposed ECMA- 392 standard compliant.

Authors
Authors: 
CAGLAR Mine, RABBACHIN Alberto, BALDINI Gianmarco, GORATTI Leonardo
Publication Year
Publication Year: 
2013
Type

Type:

Appears in Collections
Appears in Collections: 
Institute for the Protection and Security of the Citizen
Science Areas
Science Areas: 
Keywords
JRC Institutes
Publisher
Publisher: 
IEEE
ISBN
ISBN: 
978-1-4673-3122-7
ISSN
ISSN: 
1550-3607
Citation
Citation: 
Proceedings of IEEE ICC 2013 - Cognitive Radio and Networks p. 2796-2800