Dynamic spectrum assignment in multicell OFDMA networks enabling a secondary spectrum usage

Authors:
Francisco Bernardo;Ramón Agustí;Jordi Pérez-Romero;Oriol Sallent
Affiliations:
Department of Signal Theory and Communications, Universitat Politécnica de Catalunya, Spain;Department of Signal Theory and Communications, Universitat Politécnica de Catalunya, Spain;Department of Signal Theory and Communications, Universitat Politécnica de Catalunya, Spain;Department of Signal Theory and Communications, Universitat Politécnica de Catalunya, Spain
Venue:
Wireless Communications & Mobile Computing - Cognitive Radio and Advanced Spectrum Management
Year:
2009

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Abstract

The aim of this paper is to propose a set of novel Dynamic Spectrum Assignment (DSA) algorithms for multicell Orthogonal Frequency Division Multiple Access (OFDMA) scenarios. Thanks to the proposed algorithms, licensed spectrum holders can release spectrum bands in large geographical areas to be leased to other secondary markets in a cognitive radio environment, while preserving the quality of service (QoS) of the licensed users in the system. Results are obtained comparing the proposed schemes against other conventional frequency reuse strategies, revealing significant improvements in terms of both spectral efficiency and opportunities for secondary usage. Copyright © 2009 John Wiley & Sons, Ltd. This paper proposes a set of novel Dynamic Spectrum Assignment (DSA) algorithms for multicell Orthogonal Frequency Division Multiple Access (OFDMA) scenarios. Thanks to the proposed algorithms, licensed spectrum holders can release spectrum bands in large geographical areas to be leased to other secondary markets in a cognitive radio environment, while preserving the quality of service of the licensed users in the system. Results reveal significant improvements in terms of both spectral efficiency and opportunities for secondary usage.