Doppler Effect Mitigation using Reconfigurable Intelligent Surfaces with Hardware Impairments

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

17 Citations (Scopus)

Abstract

In this paper, we analyze the effects of different types of hardware impairments (HWI), including RIS-HWI, transceiver HWI, phase quantization errors and random failures, on vehicular communication system using reconfigurable intelligent surfaces (RIS) with Doppler mitigation. A closed-form expression for the received signal-to-noise-and-distortion ratio (SNDR) of an RIS-aided vehicular communication system with HWI is derived, and we also show that the average Doppler spread can be removed completely. The simulation results validate that RIS with HWI is able to bring promising average SNDR gain (e.g, 3.16 dB) of the received signal, while eliminating the average Doppler spread, and keeping the delay spread at a very low range. As a result, using the predictable positions of the vehicle, the phase shift set of RIS can be designed in advance, such that channel estimation is not necessary, resulting in lower implementation complexity.

Original languageEnglish
Title of host publication2021 IEEE Globecom Workshops, GC Wkshps 2021 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665423908
DOIs
Publication statusPublished - 2021
Event2021 IEEE Globecom Workshops, GC Wkshps 2021 - Madrid, Spain
Duration: 7 Dec 202111 Dec 2021

Publication series

Name2021 IEEE Globecom Workshops, GC Wkshps 2021 - Proceedings

Conference

Conference2021 IEEE Globecom Workshops, GC Wkshps 2021
Country/TerritorySpain
CityMadrid
Period7/12/2111/12/21

Keywords

  • Doppler effect
  • delay spread
  • hardware impairments
  • high-mobility vehicular communication
  • reconfigurable intelligent surfaces

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