Doppler Shift and Channel Estimation for Intelligent Transparent Surface Assisted Communication Systems on High-Speed Railways

Wang, Yirun; Wang, Gongpu; He, Ruisi; Ai, Bo; Tellambura, Chintha

doi:10.1109/tcomm.2023.3275590

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Cited by 9 publications

References 41 publications

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Research on Evaluation of Wireless Network Coverage Effect in Transport Lines Scenarios

Li,

Yin,

Wang

et al. 2024

Lecture Notes in Electrical Engineering

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Research on Evaluation of Wireless Network Coverage Effect in Transport Lines Scenarios

Li,

Yin,

Wang

et al. 2024

Lecture Notes in Electrical Engineering

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Advanced 6 G wireless communication technologies for intelligent high-speed railways

Chen,

Ai,

Sun

et al. 2024

High-speed Railway

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Sub-terahertz transmissive reconfigurable intelligent surface for integrated beam steering and self-OOK-modulation

Shen,

Lan,

Wang

et al. 2025

Light Sci Appl

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Boasting superior flexibility in beam manipulation and a simpler framework than traditional phased arrays, terahertz metasurface-based phased arrays show great promise for 5G-A/6G communication networks. Compared with the reflective reconfigurable intelligent surface (reflective RIS), the transmissive RIS (TRIS) offers more feasibility for transceiver multiplexing systems to meet the growing demand for high-performance beam tracking in terahertz communication and radar systems. However, the terahertz TRIS encounters greater challenges in phase shift, beam efficiency, and complex circuitry. Here, we propose a sub-terahertz TRIS based on the phase shift via Pancharatnam-Berry (PB) metasurface and self-on-off keying (OOK) modulation via Schottky diodes. The electrically reconfigurable unit cell consists of a column-wise phase resonator and a rectangular slot. An experimental retrieved equivalent lumped-element circuit model is implemented in joint field-circuit simulations and is validated by experiments. A fabricated prototype demonstrates excellent performance of TRIS with the minimum insertion loss of 2.8 dB for operational states, large bandwidth nearly covering the entire W-band for 1-bit phase shift, deep OOK amplitude modulation of 12 dB, and wide scanning range of ±60° with low specular transmission. We further implement an integrated platform combining high-speed beam steering and spatial-light modulation, verifying the point-to-point signal transmissions in different directions using the TRIS platform. The proposed TRIS with high-performance and cost-effective fabrication makes it a promising solution to terahertz minimalist communication systems, radar, and satellite communication systems.

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Doppler Shift and Channel Estimation for Intelligent Transparent Surface Assisted Communication Systems on High-Speed Railways

Cited by 9 publications

References 41 publications

Research on Evaluation of Wireless Network Coverage Effect in Transport Lines Scenarios

Research on Evaluation of Wireless Network Coverage Effect in Transport Lines Scenarios

Advanced 6 G wireless communication technologies for intelligent high-speed railways

Sub-terahertz transmissive reconfigurable intelligent surface for integrated beam steering and self-OOK-modulation

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