Authors: Kali Krishna Kota, Praful D. Mankar

Published on: February 07, 2024

Impact Score: 8.22

Arxiv code: Arxiv:2402.04570

Summary

• What is new: Integrating Reconfigurable Intelligent Surface (RIS) with a full-analog (FA) transceiver architecture in millimeter wave communications, using NOMA to address single-user transmission limitations.
• Why this is important: Addressing the challenge of low-complexity transceiver architecture in mmWave communication systems under imperfect CSI, with the constraint of single-user transmission due to a single RF-chain.
• What the research proposes: A proposed RIS-aided system using NOMA, formulating and solving sum rate (SR) and energy efficiency (EE) maximization problems through quadratic transforms, successive convex approximation, and semi-definite relaxation techniques.
• Results: The RIS-NOMA integrated FA architecture system surpassed fully digital architecture in SR at low SNR and EE across a wide SNR range, maintaining lower hardware complexity and cost.

Technical Details

Technological frameworks used: RIS-aided system design with FA architecture, employing NOMA.

Models used: Quadratic transform, successive convex approximation, semi-definite relaxation technique, alternating optimization algorithm.

Data used: Imperfect Channel State Information (CSI)

Potential Impact

Telecommunications, specifically companies involved in developing 5G and beyond technologies, wireless communication infrastructure, and mmWave communication systems.

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