Influence of indoor object diffraction on the performance of 300 GHz communication channel

Pandeng Wang; Jiuzhou Han; Qingyuan Yao; Xiaolei Wu; Jingsuo He; Bo Su; Cunlin Zhang

doi:10.1117/12.2602527

9 October 2021 Influence of indoor object diffraction on the performance of 300 GHz communication channel

Pandeng Wang, Jiuzhou Han, Qingyuan Yao, Xiaolei Wu, Jingsuo He, Bo Su, Cunlin Zhang

Proceedings Volume 11906, Infrared, Millimeter-Wave, and Terahertz Technologies VIII; 1190612 (2021) https://doi.org/10.1117/12.2602527
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

Terahertz communication technology has attracted wide attention from academic circles and industry, and is regarded as the key wireless technology to meet the real-time traffic demand of mobile heterogeneous network system, which can alleviate the capacity bottleneck of the current wireless system and realize ultra-high-speed wireless communication. As a key content of Beam-forming Techniques, indoor channel modeling of terahertz band in NLOS (non-line-of-sight) has become an urgent task. In this paper, according to the position of the receiver and the surrounding scenes, the possible path from the transmitter to the receiver is traced back through geometric optics. The influence of diffraction on the transmission channel of 300GHz indoor communication system is evaluated. Ray tracing technology is combined with knife edge diffraction (KED) and double knife edge (DKE) to simulate the diffraction of wedge-shaped object and human body respectively. The results show that when the wedge-shaped object diffracts, the diffraction coefficient decreases with the increase of the diffraction angle. Diffraction in the wedge area can be ignored in most areas of the room's line of sight, but diffraction power is dominant in the incident boundary and reflection boundary area. Due to the shadow effect caused by human movement, the path attenuation increases significantly. The results provide a research basis for the development of indoor terahertz communication.

Citation Download Citation

Pandeng Wang, Jiuzhou Han, Qingyuan Yao, Xiaolei Wu, Jingsuo He, Bo Su, and Cunlin Zhang "Influence of indoor object diffraction on the performance of 300 GHz communication channel", Proc. SPIE 11906, Infrared, Millimeter-Wave, and Terahertz Technologies VIII, 1190612 (9 October 2021); https://doi.org/10.1117/12.2602527

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