Advanced artificial doppler shift manipulation with rotational vortex beams in space-time digital-coding RIS system: a practical approach

• Main Authors: Zhao, Yufei, Guan, Yong Liang, Yuen, Chau, Liu, Xiaobei, Afkar Mohamed Ismail, Ge, Yao
• Other Authors: School of Electrical and Electronic Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2025
• Subjects: Engineering; Doppler shift; Wireless communication
• Online Access: https://hdl.handle.net/10356/182840
• Institution: Nanyang Technological University

This paper presents a novel approach for generating and manipulating artificial Doppler shifts using rotational Orbital Angular Momentum (OAM) beams integrated with Space-Time Digital-Coding Reconfigurable Intelligent Surfaces (RIS). Traditional modulation schemes like Orthogonal Time Frequency Spac...