Binary power allocation in symmetric Wyner-type interference networks

Nasreen Badruddin, Jamie Evans, Stephen V. Hanly

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The Wyner interference network is a popular model used in research on cellular networks due to its simplicity and analytical tractability. In this paper, the optimal power allocation strategies in symmetric one- and two-sided Wyner models are investigated.We determine a sufficient condition for binary power control (BPC) to be optimal that can be applied to the one-sided symmetric model. We consider binary power schemes for the symmetric two-sided Wyner network. Using a method of grouping links and performing a piecewise comparison of the group rates, we are able to determine the optimal power policy that maximizes the network sum rate. The result of the optimization can be expressed as follows for both types of networks: When the interfering channel gain √ε is small, it is optimal (in the class of binary schemes) to have all links on; otherwise, alternate links are switched off to remove interference. We characterize the critical values of ε where the transitions occur.

LanguageEnglish
Article number6867378
Pages6903-6914
Number of pages12
JournalIEEE Transactions on Wireless Communications
Volume13
Issue number12
DOIs
Publication statusPublished - 1 Dec 2014

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Power Allocation
Interference
Binary
Power control
Tractability
Power Control
Optimal Allocation
Cellular Networks
Grouping
Alternate
Critical value
Simplicity
Maximise
Model
Optimization
Sufficient Conditions

Cite this

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Binary power allocation in symmetric Wyner-type interference networks. / Badruddin, Nasreen; Evans, Jamie; Hanly, Stephen V.

In: IEEE Transactions on Wireless Communications, Vol. 13, No. 12, 6867378, 01.12.2014, p. 6903-6914.

Research output: Contribution to journalArticleResearchpeer-review

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