Intelligent Reflecting Surface Operation under Predictable Receiver Mobility: A Continuous Time Propagation Model

Bho Matthiesen, Emil Bjornson, Elisabeth De Carvalho, Petar Popovski

Research output: Contribution to journalJournal articleResearchpeer-review

2 Citations (Scopus)

Abstract

The operation of an intelligent reflecting surface (IRS) under predictable receiver mobility is investigated. We develop a continuous time system model for multipath channels and discuss the optimal IRS configuration with respect to received power, Doppler spread, and delay spread. It is shown that the received power can be maximized without adding Doppler spread to the system. In a numerical case study, we show that an IRS having the size of just two large billboards can improve the link budget of ground to Low Earth Orbit (LEO) satellite links by up to 6dB. It also adds a second, almost equivalently strong, communication path that improves the link reliability.

Original languageEnglish
Article number9200674
JournalI E E E Wireless Communications Letters
Volume10
Issue number2
Pages (from-to)216-220
Number of pages5
ISSN2162-2337
DOIs
Publication statusPublished - Feb 2021

Keywords

  • Intelligent reflecting surface
  • Internet of Things (IoT)
  • low earth orbit (LEO)
  • metasurface
  • multi-objective optimization
  • reconfigurable intelligent surface
  • satellite communication

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