Low Complexity Adaptation for Reconfigurable Intelligent Surface-Based MIMO Systems

Yiğit Z. , Basar E., Altunbaş İ.

IEEE COMMUNICATIONS LETTERS, cilt.24, sa.12, ss.2946-2950, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Konu: 12
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1109/lcomm.2020.3014820
  • Sayfa Sayıları: ss.2946-2950


Reconfigurable intelligent surface (RIS)-based transmission technology offers a promising solution to enhance wireless communication performance cost-effectively through properly adjusting the parameters of a large number of passive reflecting elements. This letter proposes a cosine similarity theorem-based low-complexity algorithm for adapting the phase shifts of an RIS that assists a multiple-input multiple-output (MIMO) transmission system. A semi-analytical probabilistic approach is developed to derive the theoretical average bit error probability (ABEP) of the system. Furthermore, the validity of the theoretical analysis is supported through extensive computer simulations.