STAR-RIS-NOMA Networks: An Error Performance Perspective

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Aldababsa M., Khaleel A., Basar E.

IEEE Communications Letters, vol.26, no.8, pp.1784-1788, 2022 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 8
  • Publication Date: 2022
  • Doi Number: 10.1109/lcomm.2022.3179731
  • Journal Name: IEEE Communications Letters
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.1784-1788
  • Keywords: Bit error rate, non-orthogonal multiple access, simultaneous transmitting and reflecting reconfigurable intelligent surface, successive interference cancellation
  • Istanbul Gelisim University Affiliated: Yes

Abstract

© 1997-2012 IEEE.This letter investigates the bit error rate (BER) performance of simultaneous transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) in non-orthogonal multiple access (NOMA) networks. In the investigated network, a STAR-RIS serves multiple non-orthogonal users located on either side of the surface by utilizing the mode switching protocol. We derive the closed-form BER expressions in perfect and imperfect successive interference cancellation cases. Furthermore, asymptotic analyses are also conducted to provide further insights into the BER behavior in the high signal-to-noise ratio region. Finally, the accuracy of our theoretical analysis is validated through Monte Carlo simulations. The obtained results reveal that the BER performance of STAR-RIS-NOMA outperforms that of the classical NOMA system, and STAR-RIS might be a promising NOMA 2.0 solution.