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The impact of unknown correlated rayleigh fading on the information rates of dual-hop amplify and forward relay channels

Mohammadi, Mohammadali; Sadeghi, Parastoo; Lamahewa, Tharaka; Ardebilipour, Mehrdad

Description

We consider a dual-hop amplify-and-forward relaying system where the channel state is unknown to both the transmitter and the receiver. Our objective is to derive the penalty of the information rate due to the unknown channel state information. We focus on determining the compound effects of fixed-gain relaying and unknown time-varying channels on the achievable information rates of the system. We show that penalty of the information rate due to the unknown channels decays with block length and...[Show more]

dc.contributor.authorMohammadi, Mohammadali
dc.contributor.authorSadeghi, Parastoo
dc.contributor.authorLamahewa, Tharaka
dc.contributor.authorArdebilipour, Mehrdad
dc.coverage.spatialHonolulu USA
dc.date.accessioned2015-12-10T23:13:58Z
dc.date.createdDecember 12-14 2011
dc.identifier.isbn9781457711800
dc.identifier.urihttp://hdl.handle.net/1885/64661
dc.description.abstractWe consider a dual-hop amplify-and-forward relaying system where the channel state is unknown to both the transmitter and the receiver. Our objective is to derive the penalty of the information rate due to the unknown channel state information. We focus on determining the compound effects of fixed-gain relaying and unknown time-varying channels on the achievable information rates of the system. We show that penalty of the information rate due to the unknown channels decays with block length and signal-to-noise ratio while it increases with normalized Doppler shift. We also derive a closed-form expression for the information penalty when the block length is large (asymptotic behavior). This derivation shows that the penalty of not knowing the mobile-fixed-mobile dual-hop relay channel can be equal to or higher than that in the direct mobile-to-mobile source-destination transmission. The additional uncertainty should be taken into account when designing cooperative systems with many relays.
dc.publisherIEEE Communications Society
dc.relation.ispartofseriesInternational Conference on Signal Processing and Communication Systems (ICSPCS 2011)
dc.sourceInternational Conference on Signal Processing and Communication Systems (ICSPCS 2011) proceedings
dc.subjectKeywords: Achievable information rate; Amplify and forward; Amplify-and-forward relaying; Asymptotic behaviors; Block lengths; Channel state; Closed-form expression; Compound effect; Cooperative systems; Correlated Rayleigh fading; Information rates; Relay channels
dc.titleThe impact of unknown correlated rayleigh fading on the information rates of dual-hop amplify and forward relay channels
dc.typeConference paper
local.description.notesImported from ARIES
local.description.refereedYes
dc.date.issued2011
local.identifier.absfor080401 - Coding and Information Theory
local.identifier.absfor100510 - Wireless Communications
local.identifier.ariespublicationu4334215xPUB976
local.type.statusPublished Version
local.contributor.affiliationMohammadi, Mohammadali, K.N. Toosi University of Technology
local.contributor.affiliationSadeghi, Parastoo, College of Engineering and Computer Science, ANU
local.contributor.affiliationLamahewa, Tharaka, College of Engineering and Computer Science, ANU
local.contributor.affiliationArdebilipour, Mehrdad, K.N. Toosi University of Technology
local.description.embargo2037-12-31
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage6
local.identifier.doi10.1109/ICSPCS.2011.6140876
local.identifier.absseo970109 - Expanding Knowledge in Engineering
dc.date.updated2016-02-24T11:04:47Z
local.identifier.scopusID2-s2.0-84857345049
CollectionsANU Research Publications

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