Utility-based power control in hierarchical spectrum sharing networks for cognitive radio
In this paper, we propose utility-based power control algorithm jointing with admission control (UPCAC) for distributed communication in the hierarchical spectrum sharing network (HSSN) for cognitive radio. We formulate a utility function (payoff function minus price function) to reflect the tradeof...
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Published in | 2008 11th IEEE Singapore International Conference on Communication Systems pp. 1036 - 1040 |
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Main Authors | , , , |
Format | Conference Proceeding |
Language | English |
Published |
IEEE
01.11.2008
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Subjects | |
Online Access | Get full text |
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Summary: | In this paper, we propose utility-based power control algorithm jointing with admission control (UPCAC) for distributed communication in the hierarchical spectrum sharing network (HSSN) for cognitive radio. We formulate a utility function (payoff function minus price function) to reflect the tradeoff policy between the protecting for primary users (PUs) and the supporting to quality of service (QoS) requirements for cognitive radio users (CRUs). We also analyze the geometric characteristics of payoff function and price function, and base the parameter setting of utility function on this analysis. Finally, we design corresponding power control protocol based on UPCAC for HSSN. Simulation results indicate that 1) UPCAC can meet the protection for PUs as well as the QoS requirements of CRUs by flexibly setting parameters; 2) UPCAC guarantees power convergence by jointing power control with admission control; 3) UPCAC achieves desirable admission ratio and spectrum efficiency. |
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ISBN: | 1424424232 9781424424238 |
DOI: | 10.1109/ICCS.2008.4737340 |