可重構智慧面 (RIS) 平台RIS Prototype Platform

可重構智慧面 (Reconfigurable Intelligent Surface, RIS) 是未來 6G 通訊的關鍵技術之一。本專案旨在開發一個能主動調控電磁環境的雛形平台，透過動態改變表面單元的相位，實現訊號反射路徑的優化，解決室內通訊死角或訊號衰減問題。Reconfigurable Intelligent Surface (RIS) is a key technology for future 6G communications. This project aims to develop a prototype platform capable of active EM environment control. By dynamically changing unit cell phases, it optimizes signal reflection paths to address indoor coverage dead zones and signal attenuation.

毫米波與 6G 通訊頻率高、傳播損耗大，遇到牆面或障礙便容易產生收訊死角；傳統解法是增設主動式中繼器，但成本與耗電都高。可重構智慧面（RIS）改以大量低成本、近乎被動的反射單元排成平面，藉由逐一調整每個單元的相位，把入射電磁波「導向」想要的方向，等於用軟體可控的方式重塑無線通道——被視為 6G 智慧無線環境的關鍵技術之一。本平台即是針對此概念打造的硬體雛形。Millimeter-wave and 6G frequencies suffer high propagation loss and are easily blocked by walls, creating coverage dead zones; the classic fix — active relays — is costly and power-hungry. A Reconfigurable Intelligent Surface (RIS) instead uses a planar array of many low-cost, near-passive reflecting cells: by tuning each cell's phase, it steers incident waves toward a desired direction, in effect reshaping the wireless channel under software control — widely seen as a key enabler of 6G smart radio environments. This platform is a hardware prototype built around that concept.

• 單元電路設計：研發具備相位調節能力的 RIS 單元結構。Unit Cell Design: Developing RIS unit cell structures with phase-tuning capabilities.
• 控制系統開發：利用微控制器同步控制數百個單元的狀態。Control System: Implementing a microcontroller-based system to synchronize the states of hundreds of unit cells.
• 波束成形演算法：計算最佳相位配置以指向特定使用者或區域。Beamforming Algorithms: Calculating optimal phase configurations to target specific users or regions.

• 雛形平台：建立可運作的 RIS 測試平台，於實驗環境中量測並驗證訊號增益。Prototype platform: build a working RIS testbed and measure/verify signal gain in an experimental setting.
• 環境優化：以動態相位調控改善非視距 (NLOS) 區域的收訊品質。Environment optimization: use dynamic phase control to improve reception quality in non-line-of-sight (NLOS) areas.