Multiple STAR-RISs-Empowered Multi-User Communications with Diversified QoS Provisioning
By: Junfeng Wang , Xiao Tang , Jinxin Liu and more
Potential Business Impact:
Makes wireless signals faster for everyone.
This paper proposes a quality-of-service (QoS)-aware multi-user communication framework facilitated by multiple simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs). The user groups are established based on their QoS requirements specified by the minimum data rate, which is provisioned by the optimized transmission and reflection configurations of the STAR-RISs. Particularly, we formulate an optimization problem to maximize the aggregate link rate across all users, under group-specified rate requirements by jointly considering the transmit beamforming and STAR-RIS configurations. Then, we employ the Lagrangian duality with quadratic transformation to tackle the non-convexity of the objective. We decompose the problem within a block coordinate descent framework, and the subproblems are solved through convex approximation and iterated to approach the optimal solution. Simulation results demonstrate the effectiveness of the proposed method in enhancing the system sum rate with guaranteed QoS performance for heterogeneous users, offering valuable insights for the deployment of STAR-RISs in future QoS-aware wireless networks.
Similar Papers
STAR-RIS-assisted Collaborative Beamforming for Low-altitude Wireless Networks
Networking and Internet Architecture
Makes flying internet drones work better in cities.
Spectrum Sharing in STAR-RIS-assisted UAV with NOMA for Cognitive Radio Networks
Systems and Control
Helps drones share internet faster and better.
Secure Satellite Communications via Multiple Aerial RISs: Joint Optimization of Reflection, Association, and Deployment
Information Theory
Makes satellite internet safer from spies.