Plug-In RIS: A Novel Approach to Fully Passive Reconfigurable Intelligent Surfaces
arXiv:2311.09626 · doi:10.1109/TWC.2024.3418969
Abstract
This paper presents a promising design concept for reconfigurable intelligent surfaces (RISs), named plug-in RIS, wherein the RIS is plugged into an appropriate position in the environment, adjusted once according to the location of both base station and blocked region, and operates with fixed beams to enhance the system performance. The plug-in RIS is a novel system design, streamlining RIS-assisted millimeter-wave (mmWave) communication without requiring decoupling two parts of the end-to-end channel, traditional control signal transmission, and online RIS configuration. In plug-in RIS-aided transmission, the transmitter efficiently activates specific regions of the divided large RIS by employing hybrid beamforming techniques, each with predetermined phase adjustments tailored to reflect signals to desired user locations. This user-centric approach enhances connectivity and overall user experience by dynamically illuminating the targeted user based on location. By introducing plug-in RIS's theoretical framework, design principles, and performance evaluation, we demonstrate its potential to revolutionize mmWave communications for the limited channel state information (CSI) scenarios. Simulation results illustrate that plug-in RIS provides power/cost-efficient solutions to overcome blockage in the mmWave communication system and a striking convergence in average bit error rate and achievable rate performance with traditional full CSI-enabled RIS solutions.
arXiv commentSubmitted in IEEE
References in corpus (9)
- Active RIS vs. Passive RIS: Which Will Prevail in 6G?
- RIS-Aided Wireless Communications: Prototyping, Adaptive Beamforming, and Indoor/Outdoor Field Trials
- Compressed Channel Estimation and Joint Beamforming for Intelligent Reflecting Surface-Assisted Millimeter Wave Systems
- Intelligent Reflecting Surface-Assisted Millimeter Wave Communications: Joint Active and Passive Precoding Design
- Joint Transceiver and Large Intelligent Surface Design for Massive MIMO MmWave Systems
- Broadband Channel Estimation for Intelligent Reflecting Surface Aided mmWave Massive MIMO Systems
- Environment-Aware Codebook for Reconfigurable Intelligent Surface-Aided MISO Communications
- Cluster Index Modulation for Reconfigurable Intelligent Surface-Assisted mmWave Massive MIMO
- Antenna Array Structures for Enhanced Cluster Index Modulation