Skip navigation
Skip navigation

Timing and Carrier Synchronization with Channel Estimation in Multi-Relay Cooperative Networks

Nasir, Ali; Mehrpouyan, Hani; Blostein, Steven; Kennedy, Rodney; Durrani, Salman

Description

Multiple distributed nodes in cooperative networks generally are subject to multiple carrier frequency offsets (MCFOs) and multiple timing offsets (MTOs), which result in time varying channels and erroneous decoding. This paper seeks to develop estimation and detection algorithms that enable cooperative communications for both decode-and-forward (DF) and amplify-and-forward (AF) relaying networks in the presence of MCFOs, MTOs, and unknown channel gains. A novel transceiver structure at the...[Show more]

dc.contributor.authorNasir, Ali
dc.contributor.authorMehrpouyan, Hani
dc.contributor.authorBlostein, Steven
dc.contributor.authorKennedy, Rodney
dc.contributor.authorDurrani, Salman
dc.date.accessioned2015-12-10T22:58:25Z
dc.date.created2012
dc.identifier.issn1053-587X
dc.identifier.urihttp://hdl.handle.net/1885/60843
dc.description.abstractMultiple distributed nodes in cooperative networks generally are subject to multiple carrier frequency offsets (MCFOs) and multiple timing offsets (MTOs), which result in time varying channels and erroneous decoding. This paper seeks to develop estimation and detection algorithms that enable cooperative communications for both decode-and-forward (DF) and amplify-and-forward (AF) relaying networks in the presence of MCFOs, MTOs, and unknown channel gains. A novel transceiver structure at the relays for achieving synchronization in AF-relaying networks is proposed. New exact closed-form expressions for the Cramér-Rao lower bounds (CRLBs) for the multi-parameter estimation problem are derived. Next, two iterative algorithms based on the expectation conditional maximization (ECM) and space-alternating generalized expectation-maximization (SAGE) algorithms are proposed for jointly estimating MCFOs, MTOs, and channel gains at the destination. Though the global convergence of the proposed ECM and SAGE estimators cannot be shown analytically, numerical simulations indicate that through appropriate initialization the proposed algorithms can estimate channel and synchronization impairments in a few iterations. Finally, a maximum likelihood (ML) decoder is devised for decoding the received signal at the destination in the presence of MCFOs and MTOs. Simulation results show that through the application of the proposed estimation and decoding methods, cooperative systems result in significant performance gains even in presence of impairments.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE Inc)
dc.sourceIEEE Transactions on Signal Processing
dc.subjectKeywords: Carrier synchronization; Cooperative communication; Expectation conditional maximizations; Lower bounds; Space alternating generalized expectation maximization; Communication channels (information theory); Convergence of numerical methods; Decoding; Estim Cooperative communications; Cramér-Rao lower bounds (CRLB); expectation conditional maximization (ECM); space-alternating generalized expectation-maximization (SAGE); timing and carrier synchronization
dc.titleTiming and Carrier Synchronization with Channel Estimation in Multi-Relay Cooperative Networks
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume60
local.identifier.absfor100510 - Wireless Communications
local.identifier.absfor090609 - Signal Processing
local.identifier.ariespublicationf5625xPUB568
local.type.statusPublished Version
local.contributor.affiliationNasir, Ali, College of Engineering and Computer Science, ANU
local.contributor.affiliationMehrpouyan, Hani, Chalmers University of Technology
local.contributor.affiliationBlostein, Steven, Queen's University
local.contributor.affiliationDurrani, Salman, College of Engineering and Computer Science, ANU
local.contributor.affiliationKennedy, Rodney, College of Engineering and Computer Science, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue2
local.bibliographicCitation.startpage793
local.bibliographicCitation.lastpage811
local.identifier.doi10.1109/TSP.2011.2174792
local.identifier.absseo970109 - Expanding Knowledge in Engineering
local.identifier.absseo890103 - Mobile Data Networks and Services
dc.date.updated2016-02-24T09:27:09Z
local.identifier.scopusID2-s2.0-84855919891
local.identifier.thomsonID000299434300020
CollectionsANU Research Publications

Download

File Description SizeFormat Image
01_Nasir_Timing_and_Carrier_2012.pdf1.07 MBAdobe PDF    Request a copy
02_Nasir_Timing_and_Carrier_2012.pdf5.24 MBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator