A self-organized spectrum assignment strategy in next generation OFDMA networks providing secondary spectrum access

Authors:
Francisco Bernardo;Ramon Agustí;Jordi Pérez-Romero;Oriol Sallent
Affiliations:
Signal Theory and Communications Department, Universitat Politècnica de Catalunya, Barcelona, Spain;Signal Theory and Communications Department, Universitat Politècnica de Catalunya, Barcelona, Spain;Signal Theory and Communications Department, Universitat Politècnica de Catalunya, Barcelona, Spain;Signal Theory and Communications Department, Universitat Politècnica de Catalunya, Barcelona, Spain
Venue:
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Year:
2009

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Abstract

This paper proposes a Self-organized Spectrum Assignment strategy in the context of next generation multicell Orthogonal Frequency Division Multiple Access networks. The proposed strategy is able to dynamically find spectrum assignments per cell depending on the spatial distribution of the users over the scenario, opening new spectrum access opportunities for secondary spectrum usage. Reinforcement Learning methodology has been employed to implement the strategy, which compared with other fixed and dynamic spectrum assignment strategies shows the best tradeoff between spectral efficiency and Quality-of-Service while releases spectrum in large geographical areas.