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Article: Timing estimation and resynchronization for amplify-and-forward communication systems
Title | Timing estimation and resynchronization for amplify-and-forward communication systems | ||||
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Authors | |||||
Keywords | Amplify-and-forward (AF) Asynchronous Channel estimation CramrRao bound (CRB) Relay Resynchronization | ||||
Issue Date | 2010 | ||||
Publisher | IEEE. | ||||
Citation | Ieee Transactions On Signal Processing, 2010, v. 58 n. 4, p. 2218-2229 How to Cite? | ||||
Abstract | This paper proposes a general framework to effectively estimate the unknown timing and channel parameters, as well as design efficient timing resynchronization algorithms for asynchronous amplify-and-forward (AF) cooperative communication systems. In order to obtain reliable timing and channel parameters, a least squares (LS) estimator is proposed for initial estimation and an iterative maximum-likelihood (ML) estimator is derived to refine the LS estimates. Furthermore, a timing and channel uncertainty analysis based on the CramrRao bounds (CRB) is presented to provide insights into the system uncertainties resulted from estimation. Using the parameter estimates and uncertainty information in our analysis, timing resynchronization algorithms that are robust to estimation errors are designed jointly at the relays and the destination. The proposed framework is developed for different AF systems with varying degrees of timing misalignment and channel uncertainties and is numerically shown to provide excellent performances that approach the synchronized case with perfect channel information. © 2006 IEEE. | ||||
Persistent Identifier | http://hdl.handle.net/10722/124730 | ||||
ISSN | 2023 Impact Factor: 4.6 2023 SCImago Journal Rankings: 2.520 | ||||
ISI Accession Number ID |
Funding Information: This work was supported by Grant GRF HKU 7181/07E. | ||||
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Li, X | en_HK |
dc.contributor.author | Xing, C | en_HK |
dc.contributor.author | Wu, YC | en_HK |
dc.contributor.author | Chan, SC | en_HK |
dc.date.accessioned | 2010-10-31T10:50:52Z | - |
dc.date.available | 2010-10-31T10:50:52Z | - |
dc.date.issued | 2010 | en_HK |
dc.identifier.citation | Ieee Transactions On Signal Processing, 2010, v. 58 n. 4, p. 2218-2229 | en_HK |
dc.identifier.issn | 1053-587X | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/124730 | - |
dc.description.abstract | This paper proposes a general framework to effectively estimate the unknown timing and channel parameters, as well as design efficient timing resynchronization algorithms for asynchronous amplify-and-forward (AF) cooperative communication systems. In order to obtain reliable timing and channel parameters, a least squares (LS) estimator is proposed for initial estimation and an iterative maximum-likelihood (ML) estimator is derived to refine the LS estimates. Furthermore, a timing and channel uncertainty analysis based on the CramrRao bounds (CRB) is presented to provide insights into the system uncertainties resulted from estimation. Using the parameter estimates and uncertainty information in our analysis, timing resynchronization algorithms that are robust to estimation errors are designed jointly at the relays and the destination. The proposed framework is developed for different AF systems with varying degrees of timing misalignment and channel uncertainties and is numerically shown to provide excellent performances that approach the synchronized case with perfect channel information. © 2006 IEEE. | en_HK |
dc.language | eng | en_HK |
dc.publisher | IEEE. | en_HK |
dc.relation.ispartof | IEEE Transactions on Signal Processing | en_HK |
dc.rights | ©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. | - |
dc.subject | Amplify-and-forward (AF) | en_HK |
dc.subject | Asynchronous | en_HK |
dc.subject | Channel estimation | en_HK |
dc.subject | CramrRao bound (CRB) | en_HK |
dc.subject | Relay | en_HK |
dc.subject | Resynchronization | en_HK |
dc.title | Timing estimation and resynchronization for amplify-and-forward communication systems | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1053-587X&volume=58&issue=4&spage=2218&epage=2229&date=2010&atitle=Timing+estimation+and+re-synchronization+for+amplify-and-forward+communication+systems | - |
dc.identifier.email | Wu, YC:ycwu@eee.hku.hk | en_HK |
dc.identifier.email | Chan, SC:scchan@eee.hku.hk | en_HK |
dc.identifier.authority | Wu, YC=rp00195 | en_HK |
dc.identifier.authority | Chan, SC=rp00094 | en_HK |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1109/TSP.2009.2039837 | en_HK |
dc.identifier.scopus | eid_2-s2.0-77949368060 | en_HK |
dc.identifier.hkuros | 175301 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-77949368060&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 58 | en_HK |
dc.identifier.issue | 4 | en_HK |
dc.identifier.spage | 2218 | en_HK |
dc.identifier.epage | 2229 | en_HK |
dc.identifier.isi | WOS:000275370800024 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Li, X=35743453000 | en_HK |
dc.identifier.scopusauthorid | Xing, C=35184311300 | en_HK |
dc.identifier.scopusauthorid | Wu, YC=7406894786 | en_HK |
dc.identifier.scopusauthorid | Chan, SC=13310287100 | en_HK |
dc.identifier.issnl | 1053-587X | - |