149007 20250129140941.0 doi 10.1016/j.adhoc.2012.02.002 sideral 76540 ART-2012-76540 eng Gállego,J. R. Universidad de Zaragoza (orcid)0000-0002-8682-745X Distributed resource allocation in cognitive radio networks with a game learning approach to improve aggregate system capacity 2012 Access copy available to the general public Unrestricted This paper presents a game theoretic solution for joint channel allocation and power control in cognitive radio networks analyzed under the physical interference model. The objective is to find a distributed solution that maximizes the network utility, defined with different criteria, with limited information. The problem is addressed through a non-cooperative game based on local information. Although the existence of a pure Nash Equilibrium cannot be assured for this game, simulation results show that it exists with high probability and with a performance similar to that of a potential game, where each player requires overall network information. The obtained results are compared with a centralized heuristic genetic algorithm to show the correctness of the proposals. From this point, utility functions for the local game are modified to restrict the transmitted power to drive the solution to a more cooperative approach. To overcome the convergence limitations of the local game, no-regret learning algorithms are used to perform the joint channel and power allocation. These algorithms provide stable mixed strategies in any scenario with even better global performance. This opens an interesting perspective to develop realistic protocols based on the modeled interactions and increases the adaptability to perform efficient opportunistic spectrum access. info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 1.456 2012 TELECOMMUNICATIONS 21 / 76 = 0.276 2012 Q2 T1 COMPUTER SCIENCE, INFORMATION SYSTEMS 38 / 132 = 0.288 2012 Q2 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Canales,M. Universidad de Zaragoza (orcid)0000-0002-8298-4300 Ortín,J. Universidad de Zaragoza (orcid)0000-0001-9052-9554 5008 560 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Ingeniería Telemática 10, 6 (2012), 1076-1089 Ad Hoc Networks Ad Hoc Networks 1570-8705 736648 http://zaguan.unizar.es/record/149007/files/texto_completo.pdf Versión publicada 622626 http://zaguan.unizar.es/record/149007/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:149007 articulos driver 2025-01-29-14:09:08 ARTICLE