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Article: Joint maximum-likelihood CFO and channel estimation for OFDMA uplink using importance sampling
Title | Joint maximum-likelihood CFO and channel estimation for OFDMA uplink using importance sampling | ||||
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Authors | |||||
Keywords | Carrier frequency offset Channel estimation Importance sampling Maximum likelihood Orthogonal frequencydivision multiple-access (OFDMA). | ||||
Issue Date | 2008 | ||||
Publisher | I E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=25 | ||||
Citation | Ieee Transactions On Vehicular Technology, 2008, v. 57 n. 6, p. 3462-3470 How to Cite? | ||||
Abstract | In this paper, the optimal carrier frequency offset (CFO) and channel estimator for an orthogonal frequency-division multiple-access (OFDMA) uplink based on a joint maximum-likelihood (ML) criterion is derived. Direct implementation of the resultant estimation scheme is challenging due to the need for a multidimensional exhaustive search in multi-CFO estimation. To solve this problem, an optimization theorem is exploited, and a computationally efficient method using an importance sampling technique is proposed. Without the need to provide an initial estimate, the proposed estimator guarantees the generation of the global optimal solution. Simulation results clearly verify the effectiveness of the proposed estimation scheme. © 2008 IEEE. | ||||
Persistent Identifier | http://hdl.handle.net/10722/58820 | ||||
ISSN | 2023 Impact Factor: 6.1 2023 SCImago Journal Rankings: 2.714 | ||||
ISI Accession Number ID |
Funding Information: This work was supported by the Research Grants Council of Hong Kong under Grant HKU7168/03E. The review of this paper was coordinated by Dr. X. Wang. | ||||
References |
DC Field | Value | Language |
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dc.contributor.author | Chen, J | en_HK |
dc.contributor.author | Wu, YC | en_HK |
dc.contributor.author | Chan, SC | en_HK |
dc.contributor.author | Ng, TS | en_HK |
dc.date.accessioned | 2010-05-31T03:37:29Z | - |
dc.date.available | 2010-05-31T03:37:29Z | - |
dc.date.issued | 2008 | en_HK |
dc.identifier.citation | Ieee Transactions On Vehicular Technology, 2008, v. 57 n. 6, p. 3462-3470 | en_HK |
dc.identifier.issn | 0018-9545 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/58820 | - |
dc.description.abstract | In this paper, the optimal carrier frequency offset (CFO) and channel estimator for an orthogonal frequency-division multiple-access (OFDMA) uplink based on a joint maximum-likelihood (ML) criterion is derived. Direct implementation of the resultant estimation scheme is challenging due to the need for a multidimensional exhaustive search in multi-CFO estimation. To solve this problem, an optimization theorem is exploited, and a computationally efficient method using an importance sampling technique is proposed. Without the need to provide an initial estimate, the proposed estimator guarantees the generation of the global optimal solution. Simulation results clearly verify the effectiveness of the proposed estimation scheme. © 2008 IEEE. | en_HK |
dc.language | eng | en_HK |
dc.publisher | I E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=25 | en_HK |
dc.relation.ispartof | IEEE Transactions on Vehicular Technology | en_HK |
dc.rights | ©2008 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. | en_HK |
dc.subject | Carrier frequency offset | en_HK |
dc.subject | Channel estimation | en_HK |
dc.subject | Importance sampling | en_HK |
dc.subject | Maximum likelihood | en_HK |
dc.subject | Orthogonal frequencydivision multiple-access (OFDMA). | en_HK |
dc.title | Joint maximum-likelihood CFO and channel estimation for OFDMA uplink using importance sampling | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0018-9545&volume=57&spage=3462&epage=3470&date=2008&atitle=Joint+maximum-likelihood+CFO+and+channel+estimation+for+OFDMA+uplink+using+importance+sampling | en_HK |
dc.identifier.email | Wu, YC:ycwu@eee.hku.hk | en_HK |
dc.identifier.email | Chan, SC:scchan@eee.hku.hk | en_HK |
dc.identifier.email | Ng, TS:tsng@eee.hku.hk | en_HK |
dc.identifier.authority | Wu, YC=rp00195 | en_HK |
dc.identifier.authority | Chan, SC=rp00094 | en_HK |
dc.identifier.authority | Ng, TS=rp00159 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1109/TVT.2008.920473 | en_HK |
dc.identifier.scopus | eid_2-s2.0-57049178333 | en_HK |
dc.identifier.hkuros | 142446 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-57049178333&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 57 | en_HK |
dc.identifier.issue | 6 | en_HK |
dc.identifier.spage | 3462 | en_HK |
dc.identifier.epage | 3470 | en_HK |
dc.identifier.isi | WOS:000260945900014 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Chen, J=25723004700 | en_HK |
dc.identifier.scopusauthorid | Wu, YC=7406894786 | en_HK |
dc.identifier.scopusauthorid | Chan, SC=13310287100 | en_HK |
dc.identifier.scopusauthorid | Ng, TS=7402229975 | en_HK |
dc.identifier.issnl | 0018-9545 | - |