On the capacity of secondary users in a cognitive radio network

Authors:
Yogesh R. Kondareddy;Nirmal Andrews;Prathima Agrawal
Affiliations:
Department of Electrical and Computer Engineering, Auburn University, Auburn, AL;Department of Electrical and Computer Engineering, Auburn University, Auburn, AL;Department of Electrical and Computer Engineering, Auburn University, Auburn, AL
Venue:
SARNOFF'09 Proceedings of the 32nd international conference on Sarnoff symposium
Year:
2009

Citing 2
Cited 2

Performance of secondary radios in spectrum sharing with prioritized primary access

MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Dynamic spectrum access in open spectrum wireless networks

IEEE Journal on Selected Areas in Communications

Performance Evaluation of Secondary Users Operating on a Heterogeneous Spectrum Environment

Wireless Personal Communications: An International Journal
Performance Analysis of Cognitive Radio Spectrum Access with Different Primary User Access Schemes

Wireless Personal Communications: An International Journal

Quantified Score

Hi-index	0.00

Visualization

Abstract

Cognitive radio networks deal with opportunistic spectrum access leading to greater utilization of the spectrum. The extent of utilization depends on the primary user's traffic and also on the way the spectrum is accessed by the primary and secondary users. In this paper Continuous-time Markov chains are used to model the spectrum access. The proposed three-dimensional model represents a more accurate cognitive system than the existing models with increased spectrum utilization and than the random and reservation based spectrum access. A nonrandom access method is proposed to remove the forced termination states. In addition, call dropping and blocking probabilities are reduced. It is further shown that channel utilization is higher than random access and reservation based access.