Reconfigurable Intelligent Surface-Assisted NOMA With Coordinate Reflector Interleaving Under Rician Fading Channel
Asmoro K, Ramatryana INA, Shin SY (2024)
Publication Type: Journal article
Publication year: 2024
Journal
Book Volume: 12
Pages Range: 44808-44816
URI: https://ieeexplore.ieee.org/abstract/document/10478299
DOI: 10.1109/ACCESS.2024.3380354
Open Access Link: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10478299
Abstract
The concept of reconfigurable intelligent surface-assisted (RIS) for assisting non-orthogonal multiple access (NOMA) transmission, where the phases can be adjusted to decrease error rates and increase capacity, has been gaining popularity as a promising candidate for 6G communication and beyond. This paper considers RIS-NOMA downlink transmission under the Rician fading channel. A coordinate reflector interleaving (CRI) is proposed, where two groups of reflector elements are introduced, such as in-phase element and quadrature element groups. Therefore, it can reduce system complexity because of a reduced number of successive interference cancellations (SIC) among users. As a result, a computer simulation shows that CRI-RIS-NOMA preserves a lower BER compared to conventional RIS-NOMA. Moreover, the superiority of CRI-RIS-NOMA over RIS-NOMA is that it can work at any power allocation for 2 users. This paper comprehensively studies theoretical derivation for 2 and 4 users to verify the computer-simulated BER. An upper-bound analysis of CRI-RIS-NOMA was also studied to observe the impact of RIS elements with respect to transmitting power from a base station.
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Korea, Republic of (KR)How to cite
APA:
Asmoro, K., Ramatryana, I.N.A., & Shin, S.Y. (2024). Reconfigurable Intelligent Surface-Assisted NOMA With Coordinate Reflector Interleaving Under Rician Fading Channel. IEEE Access, 12, 44808-44816. https://doi.org/10.1109/ACCESS.2024.3380354
MLA:
Asmoro, Krisma, I Nyoman Apraz Ramatryana, and Soo Young Shin. "Reconfigurable Intelligent Surface-Assisted NOMA With Coordinate Reflector Interleaving Under Rician Fading Channel." IEEE Access 12 (2024): 44808-44816.
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