Subcarrier Allocation with Minimum Data Rate Constraint in OFDMA Wireless Channels

Yang, F; Fang, G; Shi, J; Dutkiewicz, E

Subcarrier Allocation with Minimum Data Rate Constraint in OFDMA Wireless Channels

Yang, F Fang, G Shi, J Dutkiewicz, E

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Publication Type:: Conference
Issue Date:: 2007-03-12T22:05:48Z

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Field	Value	Language
dc.contributor.author	Yang, F	en_AU
dc.contributor.author	Fang, G	en_AU
dc.contributor.author	Shi, J	en_AU
dc.contributor.author	Dutkiewicz, E	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/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.relation.replaces	http://hdl.handle.net/2100/163
dc.title	Subcarrier Allocation with Minimum Data Rate Constraint in OFDMA Wireless Channels	en_AU
dc.type	Conference
utslib.copyright.status	open_access

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.

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http://hdl.handle.net/10453/19617