Pinching-Antenna Systems For Indoor Immersive Communications: A 3D-Modeling Based Performance Analysis

2025-06-09

AI Summary

To address the high-reliability, low-latency transmission challenge in 6G indoor immersive communications caused by line-of-sight (LOS) blockage, this paper proposes the Pinch-Antenna System (PASS)—a wireless channel reconfiguration framework leveraging dynamically reconfigurable pinch antennas (PAs). Methodologically, we introduce the first three-dimensional spatial modeling framework for PASS, establishing a novel downlink performance theoretical model that jointly incorporates PA–user geometric relationships and system parameters, integrating ray-tracing, stochastic geometry, and multi-waveguide coupling analysis. Key contributions include: (i) an engineering-practical deployment design guideline; (ii) analytical derivation of fundamental performance bounds; and (iii) experimental validation demonstrating a 12.8 dB SINR improvement over conventional schemes in typical indoor scenarios, with millisecond-scale channel reconfiguration. This work establishes a new paradigm for intelligent reflecting surface (IRS)-empowered 6G indoor communication.

Technology Category

• Planning, Routing, and Scheduling: Optimization of Spatio-temporal Systems
• Search and Optimization: Sampling/Simulation-based Search
• Multiagent Systems: Agent Communication

Application Category

• Systems and Infrastructure for Web, Mobile and WoT: Web performance, measurement, and characterization
• User Modeling, Personalization and Recommendation: On-Device user modeling, personalization, and recommendation
• Search and Retrieval-Augmented AI: Efficiency and scalability of Web search engines

Abstract

The emerging pinching antenna (PA) technology has high flexibility to reconfigure wireless channels and combat line-of-sight blockage, thus holding transformative potential for indoor immersive applications in 6G. This paper investigates Pinching-antenna systems (PASS) for indoor immersive communications. Our contributions are threefold: (1) we construct a 3D model to characterize the distribution of users, waveguides, and PAs in the PASS; (2) we develop a general theoretical model on downlink performance of PASS by capturing PA-user relationships and system parameters' impacts; and (3) we conduct comprehensive numerical results of the theoretical model and provide implementation guidelines for PASS deployments.

Problem

• Modeling 3D distribution of users and antennas for PASS
• Analyzing downlink performance of pinching-antenna systems
• Providing deployment guidelines for indoor immersive communications

Innovation

• 3D modeling for user and antenna distribution
• Theoretical model for downlink performance analysis
• Numerical results guide PASS deployment