Calculating terahertz channel capacity under beam misalignment and user mobility

Tong, X., Chang, B., Meng, Z., Zhao, G. and Chen, Z. (2022) Calculating terahertz channel capacity under beam misalignment and user mobility. IEEE Wireless Communications Letters, 11(2), pp. 348-351. (doi: 10.1109/LWC.2021.3127884)

Abstract

In this letter, we consider the terahertz (THz) wireless communication between an unmanned aerial vehicle (UAV) and a base station. The beam alignment is interrupted by some unpredictable factors, such as air turbulence, and the UAV recovers the beam alignment via flying maneuver. Here, we propose a new method to obtain the closed-form channel capacity under the beam misalignment, where a classical control model is used to capture the trajectory of the UAV maneuver. This allows us to obtain a much accurate channel capacity compared with the conventional methods that treat the misalignment as a random variable. The numerical results show that the proposed method reduces almost 80% calculation error compared to the conventional method.

• Item Type: Articles
• Additional Information: This work was supported by the National Natural Science Foundation of China under Grant 61631004.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Zhao, Dr Guodong and Meng, Mr Zhen
• Authors: Tong, X., Chang, B., Meng, Z., Zhao, G., and Chen, Z.
• College/School: College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
• Journal Name: IEEE Wireless Communications Letters
• Publisher: IEEE
• ISSN: 2162-2337
• ISSN (Online): 2162-2345
• Published Online: 15 November 2021
• Copyright Holders: Copyright © 2021 IEEE
• First Published: First published in IEEE Wireless Communications Letters 11(2): 348-351
• Publisher Policy: Reproduced in accordance with the publisher copyright policy