OAM-based Reconfigurable Doppler Shifts Enable PAPR Reduction for Multi-carrier Doppler Diversity

Yufei Zhao, Yao Ge, Zhaojie Yang, Gaohua Ju, Lu Ma, Yilong Lu, Yong Liang Guan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

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.

Original languageEnglish
Title of host publication2022 Asia-Pacific Microwave Conference, APMC 2022 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages485-487
Number of pages3
ISBN (Electronic)9784902339567
Publication statusPublished - 2022
Externally publishedYes
Event2022 Asia-Pacific Microwave Conference, APMC 2022 - Yokohama, Japan
Duration: Nov 29 2022Dec 2 2022

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC
Volume2022-November

Conference

Conference2022 Asia-Pacific Microwave Conference, APMC 2022
Country/TerritoryJapan
CityYokohama
Period11/29/2212/2/22

Bibliographical note

Publisher Copyright:
© 2022 The Institute of Electronics Information and Communication Engineers (IEICE) of Japan.

ASJC Scopus Subject Areas

  • Electrical and Electronic Engineering

Keywords

  • OAM
  • OFDM
  • orbital angular momentum
  • PAPR
  • peak to average power ratio
  • rotating Doppler shifts

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