Peak-to-average power ratio analysis for OFDM-based mixed-numerology transmissions

Liu, X., Zhang, L. , Xiong, J., Zhang, X., Zhou, L. and Wei, J. (2020) Peak-to-average power ratio analysis for OFDM-based mixed-numerology transmissions. IEEE Transactions on Vehicular Technology, 69(2), pp. 1802-1812. (doi: 10.1109/TVT.2019.2960801)

206113.pdf - Accepted Version



In this paper, the probability distribution of the peak to average power ratio (PAPR) is analyzed for the mixed numerologies transmission based on orthogonal frequency division multiplexing (OFDM). State of the art theoretical analysis implicitly assumes continuous and symmetric frequency spectrum of OFDM signals. Thus, it is difficult to be applied to the mixed-numerology system due to its complication. By comprehensively considering system parameters, including numerology, bandwidth and power level of each subband, we propose a generic analytical distribution function of PAPR for continuous-time signals based on level-crossing theory. The proposed approach can be applied to both conventional single numerology and mixed-numerology systems. In addition, it also ensures the validity for the noncontinuous-OFDM (NC-OFDM). Given the derived distribution expression, we further investigate the effect of power allocation between different numerologies on PAPR. Simulations are presented and show the good match of the proposed theoretical results.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Zhang, Professor Lei
Authors: Liu, X., Zhang, L., Xiong, J., Zhang, X., Zhou, L., and Wei, J.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:IEEE Transactions on Vehicular Technology
ISSN (Online):1939-9359
Published Online:19 December 2019
Copyright Holders:Copyright © 2019 IEEE
First Published:First published in IEEE Transactions on Vehicular Technology 69(2): 1802-1812
Publisher Policy:Reproduced in accordance with the publisher copyright policy
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