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Title: OAM-based reconfigurable doppler shifts enable PAPR reduction for multi-carrier doppler diversity
Authors: Zhao, Yufei
Ge, Yao
Yang, Zhaojie
Ju, Gaohua
Ma, Lu
Lu, Yilong
Guan, Yong Liang
Keywords: Engineering::Electrical and electronic engineering::Wireless communication systems
Issue Date: 2022
Source: Zhao, Y., Ge, Y., Yang, Z., Ju, G., Ma, L., Lu, Y. & Guan, Y. L. (2022). OAM-based reconfigurable doppler shifts enable PAPR reduction for multi-carrier doppler diversity. 2022 Asia-Pacific Microwave Conference (APMC), 485-487.
Project: FCP-NTU-RG-2021-015
Conference: 2022 Asia-Pacific Microwave Conference (APMC)
Abstract: Orbital Angular Momentum (OAM) is recognized as an intrinsic property of Electro-Magnetic (EM) waves. The orthogonality between multiple OAM modes is usually exploited to improve the spectral efficiency and transmission rate in wireless communications. In a recent study, we discovered that even when the transceivers are stationary, a specific spatial Doppler shift can be generated by rotating the wavefront structure of the OAM helical beams. Furthermore, arbitrary integer rotational OAM Doppler shifts can be realized flexibly by using the recently popular digital encoding metasurfaces. The artificial Doppler signals can be widely used in various wireless transmission scenarios, such as Doppler spoofing stealth, Doppler index modulation, and frequency-hopping channels. As a specific example, this paper demonstrates that in the discontinuous Orthogonal Frequency Division Multiplexing (OFDM) systems, the Peak to Average Power Ratio (PAPR) degradation caused by superposition of multi-carrier signal for additional Doppler diversity can be greatly alleviated by means of the OAM-based reconfigurable Doppler shifts.
ISBN: 978-4-902339-56-7
DOI: 10.23919/APMC55665.2022.9999832
Schools: School of Electrical and Electronic Engineering 
Rights: © 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at:
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers

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