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A novel practical utility-based algorithm for adaptive radio resource allocation in OFDMA wireless networks

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Publication date12/2010
Host publicationTelecommunications (IST), 2010 5th International Symposium on
PublisherIEEE
Pages373-378
Number of pages6
ISBN (Print)9781424481835
Original languageEnglish
Event2010 5th International Symposium on Telecommunications (IST) - Tehran, Iran, United Kingdom
Duration: 4/12/20106/12/2010

Conference

Conference2010 5th International Symposium on Telecommunications (IST)
CountryUnited Kingdom
Period4/12/106/12/10

Conference

Conference2010 5th International Symposium on Telecommunications (IST)
CountryUnited Kingdom
Period4/12/106/12/10

Abstract

In this paper, we propose a channel aware fast utility-based algorithm for allocating power and subcarrier to the users in Orthogonal Frequency Division Multiple Access (OFDMA) networks. Utility function is a proven approach for fair and efficient radio resource allocation. Most of the proposed schemes in the related literature consider continuous rate adaptation. However, our proposed algorithm utilizes adaptive bit loading and power allocation in conjunction with Dynamic Subcarrier Allocation (DSA). Moreover, the fact that OFDMA system is only able to transmit with several bit rates has been taken into account in our proposed algorithm. We further study the performance of the proposed algorithm through simulations. Comparisons with similar approaches are also conducted which indicate significant performance improvement.