STAR-RIS-NOMA Networks: An Error Performance Perspective

被引:40
作者
Aldababsa, Mahmoud [1 ]
Khaleel, Aymen [2 ]
Basar, Ertugrul [2 ]
机构
[1] Istanbul Gelisim Univ, Dept Elect & Elect Engn, TR-34310 Istanbul, Turkey
[2] Koc Univ, Dept Elect & Elect Engn, Commun Res & Innovat Lab CoreLab, TR-34450 Istanbul, Turkey
关键词
NOMA; Reflection; Bit error rate; Protocols; Interference cancellation; Symbols; Signal to noise ratio; non-orthogonal multiple access; simultaneous transmitting and reflecting reconfigurable intelligent surface; successive interference cancellation; NONORTHOGONAL MULTIPLE-ACCESS; TRANSMISSION;
D O I
10.1109/LCOMM.2022.3179731
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
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.
引用
收藏
页码:1784 / 1788
页数:5
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