Subcarrier Allocation with Minimum Data Rate Constraint in OFDMA Wireless Channels

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dc.contributor.author Yang, Feng. en_AU
dc.contributor.author Fang, Gengfa. en_AU
dc.contributor.author Shi, Jinglin. en_AU
dc.contributor.author Dutkiewicz, Eryk. en_AU
dc.date.accessioned 2007-03-12T22:05:48Z
dc.date.accessioned 2012-12-15T02:29:39Z
dc.date.available 2007-03-12T22:05:48Z
dc.date.available 2012-12-15T02:29:39Z
dc.date.issued 2007-03-12T22:05:48Z
dc.identifier.uri http://hdl.handle.net/2100/163
dc.identifier.uri http://hdl.handle.net/10453/19617
dc.description.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. en_AU
dc.format.extent 168029 bytes
dc.format.mimetype application/pdf
dc.language.iso en_AU
dc.title Subcarrier Allocation with Minimum Data Rate Constraint in OFDMA Wireless Channels en_AU


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