Subcarrier allocation with minimum data rate constraint in OFDMA wireless channels

Gengfa Fang*, Feng Yang, Jinglin Shi, Eryk Dutkiewicz

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

1 Citation (Scopus)

Abstract

In this paper, we present a novel and efficient Subcarrire Allocation algorithm with Minimum Data RAte (SAMDRA) constraint for multiuers orthogonal frequency division multiple access (OFDMA) wireless networks. The proposed algorithm attempts to exploit both the time diversity and frequency diversity in the wireless channel. A concept of service expectation is used to indicate how users hope to be served and have their quality of service (QoS) guaranteed. The subcarrier allocation problem is decomposed into two stages. The first stage is to decide which user to be served based on the service expectation and channel quality of users. In the second stage, a sub-carrier is chosen for the current user in order to maxi-mize the average data rate. Numerical results demon-strate a significant improvement in the average date rate under the constraint of minimum data rate guarantee for users.

Original languageEnglish
Title of host publicationProceedings of the 1st IEEE International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless 2006
EditorsJohnson I. Agbinya, Sam Reisenfeld
Place of PublicationSydney
PublisherUniversity of Technology Sydney
Pages351-356
Number of pages6
ISBN (Print)0977520005, 9780977520008
Publication statusPublished - 2006
Externally publishedYes
Event1st IEEE International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless - 2006 - Sydney, Australia
Duration: 13 Mar 200616 Mar 2006

Other

Other1st IEEE International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless - 2006
CountryAustralia
CitySydney
Period13/03/0616/03/06

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