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AuthorStefanatos, Stelios
AuthorFoukalas, Fotis
AuthorKhattab, Tamer
Available date2021-01-25T06:45:43Z
Publication Date2017
Publication NameIEEE Transactions on Communications
ResourceScopus
ISSN906778
URIhttp://dx.doi.org/10.1109/TCOMM.2017.2705071
URIhttp://hdl.handle.net/10576/17389
AbstractThis paper considers the problem of analytically assessing the maximum achievable rates (capacity) of orthogonal frequency division multiplexing (OFDM) transmissions when the receiver, for complexity reasons, only accounts for the common phase error (CPE) effect due to phase noise impairments with inter-carrier interference (ICI) treated as noise. By recognizing that the functional form of the CPE with respect to the phase noise realization is actually a free design parameter, determination of the capacity is posed as a functional optimization problem with respect to the, so-called, CPE function. A simple lower bound of the capacity is obtained, revealing the performance degradation due to the unknown CPE at the receiver, as well as the suboptimal performance achieved in severe phase noise conditions by the conventional CPE function that is routinely employed in previous works. The existence of an optimal number of subcarriers that balances the effects of the (unknown) CPE and ICI is highlighted and critical system design/operation issues, such as selection of the CPE function and effect of unknown channel on the achievable rate, are discussed. The analysis in this paper can be employed for determining the suitability of OFDM in phase noise channels and provides a tractable utility function for resource allocation purposes.
SponsorManuscript received October 7, 2016; revised February 10, 2017 and May 5, 2017; accepted May 6, 2017. Date of publication May 17, 2017; date of current version August 14, 2017. This research work was made possible by grant number NPRP 6-1326-2-532 from the Qatar National Research Fund, QNRF (a member of the Qatar Foundation, QF). The statements made herein are the sole responsibility of the authors. The associate editor coordinating the review of this paper and approving it for publication was G. Colavolpe. (Corresponding author: Stelios Stefanatos.) S. Stefanatos is with the Department of Digital Systems, University of Piraeus, 18534 Piraeus, Greece (e-mail: sstefanatos@unipi.gr).
Languageen
PublisherInstitute of Electrical and Electronics Engineers Inc.
Subjectcapacity
common phase error
OFDM
Phase noise
TitleOn the Achievable Rates of OFDM with Common Phase Error Compensation in Phase Noise Channels
TypeArticle
Pagination3509-3521
Issue Number8
Volume Number65
dc.accessType Abstract Only


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