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Title: Model guaranteed transmission rate providing in WiMAX downlink
Authors: Al-Janabi H. D.
Al-Dulaimi A. M.
Abed A. H.
Keywords: WiMAX
sub-channels allocation
mathematical model
objective function
required transmission rate
Issue Date: 2013
Publisher: Проблеми телекомунікацій
Citation: Al-Janabi H.D.K., Al-Dulaimi A.M.H., Abed A.H. "Model guaranteed transmission rate providing in WiMAX downlink." Проблеми телекомунікацій. – 2013. – № 1 (10). – С. 82 - 90.
Abstract: Found that the provision of the required transmission rate of WiMAX can be achieved by solving the problem of frequency resource allocation in the downlink. As a result analyzed by the existing mechanisms of the frequency distribution of resources between subscriber stations in a downlink wireless network, operating using the technology of WiMAX. Based on the identified drawbacks of making a mathematical model the distribution of sub-channels in the network standard, IEEE 802.16, which provides a guaranteed rate subscriber stations in the downlink and submitted by a number of linear constraint equations. The novelty of the model lies in the formulation of the problem the frequency distribution of the resource allocation problem as a sub-channel with a firmly fixed number of subcarriers in each of them. The solution to the optimization problem sub-channel allocation proposed to carry out a multiple objective functions that the available frequency resources in order to allocate a minimum number of sub-channels, the distribution of the available frequency resources in order to allocate a minimum transfer speed of each the subscriber stations, the distribution of the available frequency resources to jointly minimize the number of used sub-channels and a transmission rate allocated to subscriber stations in a downlink. A comparative analysis of the solutions obtained by using different objective functions.
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