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Utility/pricing-based resource allocation strategy for cognitive radio systems

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3 Author(s)
Bassem Zayen ; Mobile Communications Department, EURECOM Sophia Antipolis, France ; Aawatif Hayart ; Guevara Noubir

In this paper1, we propose a resource allocation scheme based on a utility/pricing strategy with the objective to maximize a defined utility function subject to minimize the mutual interference caused by secondary users (SUs) with protection for primary users (PUs). Specifically, we formulate a utility function to reflect the needs of PUs by verifying the outage probability constraint, and the per-user capacity by satisfying the signal-to-noise and interference ratio (SNIR) constraint, as well as to limit interference to PUs. Furthermore, the existence of the Nash equilibrium of the proposed game is established, as well as its uniqueness under some sufficient conditions. Theoretical and simulation results based on a realistic network setting, and a comparison with a previously published binary power allocation method will be provided in this paper. The reported results demonstrate the efficiency of the proposed technique in terms of cognitive radio network (CRN) deployment while maintaining quality-of-service (QoS) for the primary system, and its superiority to the binary power allocation.

Published in:

Multimedia Computing and Systems (ICMCS), 2011 International Conference on

Date of Conference:

7-9 April 2011