Energy Efficiency Comparison of RIS, Active RIS, and RDARS
Research Paper#Wireless Communication, Energy Efficiency, Reconfigurable Intelligent Surfaces🔬 Research|Analyzed: Jan 3, 2026 16:26•
Published: Dec 27, 2025 09:28
•1 min read
•ArXivAnalysis
This paper provides a comparative analysis of different reconfigurable surface architectures (RIS, active RIS, and RDARS) focusing on energy efficiency and coverage in sub-6GHz and mmWave bands. It addresses the limitations of multiplicative fading in RIS and explores alternative solutions. The study's value lies in its practical implications for designing energy-efficient wireless communication systems, especially in the context of 5G and beyond.
Key Takeaways
- •RDARS is energy-efficient for sub-6GHz coverage enhancement.
- •Active RIS excels in energy efficiency for mmWave systems.
- •RIS is more energy-efficient for a lower number of elements and near UEs.
Reference / Citation
View Original"RDARS offers a highly energy-efficient alternative of enhancing coverage in sub-6GHz systems, while active RIS is significantly more energy-efficient in mmWave systems."