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Permanent link (DOI): https://doi.org/10.7939/R3FD9F

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Theses and Dissertations

Performance of dual hop relay systems with imperfect CSI Open Access

Descriptions

Other title
Subject/Keyword
performance analysis
cooperative relay
wireless communication
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Soysa, Madushanka Dinesh
Supervisor and department
Tellambura, Chintha (Electrical and Computer Engineering)
Examining committee member and department
Jing, Yindi (Electrical and Computer Engineering)
Elmallah, Ehab (Computing Science)
Department
Department of Electrical and Computer Engineering
Specialization

Date accepted
2011-08-31T13:08:44Z
Graduation date
2011-11
Degree
Master of Science
Degree level
Master's
Abstract
Wireless relays offer benefits such as coverage extension and improving robustness. Selection of relays may provide further benefits. The best relays are selected based on the channel state information. However, due to feedback or scheduling delays, in practise, the relay and/or the source node can have outdated channel state information. This outdated information will cause a performance degradation, and in this thesis its impact on dual-hop relay systems is investigated. The performance of amplify-and-forward (AF) relays under partial relay selection and opportunistic relay selection is analyzed. Both variable gain AF and fixed gain AF schemes are considered. Expressions for the outage probability and the average bit error rate and simplified high signal-to-noise ratio approximations are derived. The effect of parameters such as the number of relays, the rank of chosen relay, and the correlation between the delayed and current channel state information are analyzed.
Language
English
DOI
doi:10.7939/R3FD9F
Rights
License granted by Madushanka Soysa (soysa@ualberta.ca) on 2011-08-30T21:43:11Z (GMT): Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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