Title:
Experimentation and physical layer modeling for opportunistic large array-based networks

dc.contributor.advisor Weitnauer, Mary Ann
dc.contributor.author Jung, Haejoon
dc.contributor.committeeMember Barry, John
dc.contributor.committeeMember Li, Ye
dc.contributor.committeeMember Wang, Hua
dc.contributor.department Electrical and Computer Engineering
dc.date.accessioned 2014-05-22T15:23:30Z
dc.date.available 2014-05-22T15:23:30Z
dc.date.created 2014-05
dc.date.issued 2014-01-09
dc.date.submitted May 2014
dc.date.updated 2014-05-22T15:23:30Z
dc.description.abstract The objective of this dissertation is to better understand the impact of the range extension and interference effects of opportunistic large arrays (OLAs), in the context of cooperative routing in multi-hop ad hoc networks. OLAs are a type of concurrent cooperative transmission (CCT), in which the number and location of nodes that will participate in a particular CCT cannot be known a priori. The motivation of this research is that the previous CCT research simplifies or neglects significant issues that impact the CCT-based network performance. Therefore, to develop and design more efficient and realistic OLA-based protocols, we clarify and examine through experimentation and analysis the simplified or neglected characteristics of CCT, which should be considered in the network-level system design. The main contributions of this research are (i) intra-flow interference analysis and throughput optimization in both disk- and strip-shaped networks, for multi-packet OLA transmission, (ii) CCT link modeling focusing on path-loss disparity and link asymmetry, (iii) demonstration of CCT range-extension and OLA-based routing using a software-defined radio (SDR) test-bed, (iv) a new OLA-based routing protocol with practical error control algorithm. In the throughput optimization in presence of the intra-channel interference, we analyze the feasibility condition of spatially pipelined OLA transmissions using the same channel and present numerical results with various system parameters. In the CCT link model, we provide the impact of path-loss disparity that are inherent in a virtual multiple-input-single-output (VMISO) link and propose an approximate model to calculate outage rates in high signal-to-noise-ratio (SNR) regime. Moreover, we present why link asymmetry is relatively more severe in CCT compared to single-input-single-output (SISO) links. The experimental studies show actual measurement values of the CCT range extension and realistic performance evaluation of OLA-based routing. Lastly, OLA with primary route set-up (OLA-PRISE) is proposed with a practical route recovery technique.
dc.description.degree Ph.D.
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/51798
dc.language.iso en_US
dc.publisher Georgia Institute of Technology
dc.subject Cooperative transmission
dc.subject Cooperative
dc.subject Opportunistic large array
dc.subject OLA
dc.subject Intra-flow interference
dc.subject Co-channel interference
dc.subject Interference
dc.subject USRP
dc.subject Software-defined radio
dc.subject SDR
dc.subject.lcsh Computer networks
dc.subject.lcsh Orthogonal arrays
dc.subject.lcsh Antenna arrays
dc.title Experimentation and physical layer modeling for opportunistic large array-based networks
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Weitnauer, Mary Ann
local.contributor.corporatename School of Electrical and Computer Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 40e56013-1a4b-4b7c-9c07-fc7cccf63c5e
relation.isOrgUnitOfPublication 5b7adef2-447c-4270-b9fc-846bd76f80f2
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
thesis.degree.level Doctoral
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