Open AccessDynamic spectrum assignment in multicell OFDMA networks enabling a secondary spectrum usage
Author(s) -
Bernardo Francisco,
Agustí Ramón,
PérezRomero Jordi,
Sallent Oriol
Publication year - 2009
Publication title -
wireless communications and mobile computing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.42
H-Index - 64
eISSN - 1530-8677
pISSN - 1530-8669
DOI - 10.1002/wcm.760
Subject(s) - computer science , cognitive radio , orthogonal frequency division multiple access , reuse , quality of service , radio spectrum , frequency allocation , spectrum (functional analysis) , computer network , frequency assignment , spectral efficiency , set (abstract data type) , orthogonal frequency division multiplexing , frequency division multiple access , telecommunications , wireless , channel (broadcasting) , physics , quantum mechanics , ecology , biology , programming language
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.