Research Paper#Wireless Communication, 6G, RSMA, RIS, Movable Antennas🔬 ResearchAnalyzed: Jan 3, 2026 16:10
Sum Rate Optimization for RIS-Aided RSMA with Movable Antenna
Published:Dec 29, 2025 06:50
•1 min read
•ArXiv
Analysis
This paper addresses the limitations of fixed antenna elements in conventional RSMA-RIS architectures by proposing a movable-antenna (MA) assisted RSMA-RIS framework. It formulates a sum-rate maximization problem and provides a solution that jointly optimizes transmit beamforming, RIS reflection, common-rate partition, and MA positions. The research is significant because it explores a novel approach to enhance the performance of RSMA systems, a key technology for 6G wireless communication, by leveraging the spatial degrees of freedom offered by movable antennas. The use of fractional programming and KKT conditions to solve the optimization problem is a standard but effective approach.
Key Takeaways
- •Proposes a movable-antenna (MA) assisted RSMA-RIS framework to improve performance.
- •Formulates and solves a sum-rate maximization problem.
- •Demonstrates performance gains compared to both fixed antenna RSMA-RIS and SDMA.
Reference
“Numerical results indicate that incorporating MAs yields additional performance improvements for RSMA, and MA assistance yields a greater performance gain for RSMA relative to SDMA.”