On the Achievable Rates of OFDM with Common Phase Error Compensation in Phase Noise Channels
المؤلف | Stefanatos, Stelios |
المؤلف | Foukalas, Fotis |
المؤلف | Khattab, Tamer |
تاريخ الإتاحة | 2021-01-25T06:45:43Z |
تاريخ النشر | 2017 |
اسم المنشور | IEEE Transactions on Communications |
المصدر | Scopus |
الرقم المعياري الدولي للكتاب | 906778 |
الملخص | This 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. |
راعي المشروع | Manuscript 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). |
اللغة | en |
الناشر | Institute of Electrical and Electronics Engineers Inc. |
الموضوع | capacity common phase error OFDM Phase noise |
النوع | Article |
الصفحات | 3509-3521 |
رقم العدد | 8 |
رقم المجلد | 65 |
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