Ahmed, Waqas and Gao, Jason and Zhou, Hong and Faulkner, Michael (2009) Throughput and proportional fairness in cognitive radio networks. In: ATC 2009: 2nd International Conference on Advanced Technologies for Communications, 12-14 Oct 2009, Hai Phong, Vietnam.
In this paper, we investigate the aggregate throughput and proportional fairness of two independent secondary user (SU) groups in a cognitive radio (CR) network. Using a continuous time Markov chain, the expression for the aggregate throughput as a function of traffic intensity, forced termination and blocking probabilities is derived. Furthermore, throughput loss of the individual SU groups is analyzed in terms of proportional fairness. The results show that as the difference between the service rates increases the fairness deviates from its ideal value and this unfairness cannot be countered by changing the arrival/access rate of SUs. For the fixed arrival rate of SU groups there exists an optimal service rate pair which maximize the aggregate throughput.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||Published version deposited in accordance with the copyright policy of the publisher. '©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.'|
|Uncontrolled Keywords:||cognitive radio; channel reservation; blocking probability; forced termination probability|
|Depositing User:||Dr Hong Zhou|
|Date Deposited:||01 Mar 2010 04:34|
|Last Modified:||02 Jul 2013 23:41|
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