GENERAL ENQUIRIES: Tel: + 27 12 841 2911 | Email:

The system will be going down for an upgrade on the 22nd January 2021 from 14h00 to 19h00. The system will be inaccessible during this period.

Show simple item record Olwal, TO Djouani, K Kogeda, OP Van Wyk, BJ 2012-10-24T12:27:43Z 2012-10-24T12:27:43Z 2012-09
dc.identifier.citation Olwal, TO, Djouani, K, Kogeda, OP and Van Wyk, BJ. Joint queue-perturbed and weakly-coupled power control for wireless backbone networks. International Journal of Applied Mathematics and Computer Science, vol. 22(3), pp. 749-764 en_US
dc.identifier.issn 1641-876X
dc.description Copyright: 2012 AMCS en_US
dc.description.abstract Wireless Backbone Networks (WBNs) equipped with Multi-Radio Multi-Channel (MRMC) configurations do experience power control problems such as inter-channel and co-channel interference, high energy consumption at the multiple queues and unscalable network connectivity. Such network problems can conviniently be modelled using the theory of queue perturbation at the multiple queue systems and also as weak coupling at the multiple channel wireless network. Consequently, this paper proposes a queue perturbation and weakly-coupled based power control approach for the WBNs. The ultimate objectives are to increase energy-efficiency and the overal network capacity. In order to achieve these objectives, a Markov chain model is first presented to describe the behaviour of the steady state probability distribution of the queue energy and buffer states. The singular perturbation parameter is approximated from the coefficients of Taylor series expansion of the probability distribution. The impact of such queue perturbations on the transmission probability, given some transmission power values, is also analysed. Second, the inter-channel interference is modelled as a weakly-coupled wireless system. Third, Nash differential games are applied to derive optimal power control signals for each user subject to the power constraints at each node. Finally, analytical models and numerical examples show the efficacy of the proposed model in solving power control problems in WBNs. en_US
dc.language.iso en en_US
dc.publisher De Gruyter en_US
dc.relation.ispartofseries Workflow;9552
dc.subject Decentralized power control en_US
dc.subject Singular perturbation theory en_US
dc.subject Weak coupling theory en_US
dc.subject Wireless backbone networks en_US
dc.subject Optimal control theory en_US
dc.title Joint queue-perturbed and weakly-coupled power control for wireless backbone networks en_US
dc.type Presentation en_US

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search ResearchSpace

Advanced Search


My Account