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Title:Backpressure networks with cooperative link augmentation
Author(s):Lee, Ulysses
Advisor(s):Singer, Andrew Carl
Department / Program:Electrical And Computer Engineering
Discipline:Electrical And Computer Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:M.S.
Genre:Thesis
Subject(s):Cooperative Diversity
Backpressure Routing
Network Queueing theory
Abstract:We investigate a cross-layer communication technique which jointly lever- ages diversity gain from cooperative communications relaying and optimal throughput characteristics of backpressure networking. In particular, we address the capacity limitations of backpressure networks within fading en- vironments by the retasking of a cooperating node as a relay with potentially heterogeneous transmission architecture. Retasking a node as a cooperative relay can temporally allocate resources of one particular session within the backpressure network onto another session, thereby allowing for a more flex- ible physical (PHY) layer for traffic load balancing. With this, we derive a scheduling method that ensures timely delivery of information in networks without predetermined infrastructure. Within this thesis, we propose the architecture of an amplify-and-forward relay for cooperative communications and derive the performance of multi- ple cooperative nodes utilizing this architecture. We also propose a suitable medium access control (MAC) layer facilitating the scheduling and decision making of nearby relay node candidates. The proposed architecture may be of potential interest for emerging device-to-device (D2D) and swarming mesh networks.
Issue Date:2016-12-07
Type:Thesis
URI:http://hdl.handle.net/2142/95515
Rights Information:Copyright 2016 Ulysses Lee
Date Available in IDEALS:2017-03-01
Date Deposited:2016-12


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