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Back-pressure-like mechanisms on relay selection policies for cooperative diversity systems
KTH, School of Electrical Engineering (EES), Automatic Control.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The topic of the current thesis is the reduction of the average packet delay

in two-hop wireless cooperative networks with buffer-aided relays. This type

of networks is of particular interest since it constitutes the building block for

extended networks with multiple hops and numerous relays.

Back-pressure-like algorithms are developed for the HRS and max − link

relay selection schemes. First, an algorithm is developed and applied for both

the HRS and the max − link protocols. It reduces the average delay considerably,

but, in the case of the max − link the diversity of the system is reduced

resulting in higher outage probabilities. For this reason, a new algorithm is developed

that aims at maintaining a high diversity throughout the operation of

the network. Distributed implementations of the algorithms are also discussed.

The performance of the proposed algorithms is illustrated via simulations.

Place, publisher, year, edition, pages
2015. , 76 p.
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:kth:diva-167794OAI: oai:DiVA.org:kth-167794DiVA: diva2:813435
Examiners
Available from: 2015-05-22 Created: 2015-05-22 Last updated: 2015-05-22Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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Language
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  • Other locale
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Output format
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