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Chin. Phys. B, 2022, Vol. 31(2): 024102    DOI: 10.1088/1674-1056/ac339c

Estimation of co-channel interference between cities caused by ducting and turbulence

Kai Yang(杨凯)1, Zhensen Wu(吴振森)1, Xing Guo(郭兴)2,†, Jiaji Wu(吴家骥)2, Yunhua Cao(曹运华)1, Tan Qu(屈檀)2, and Jiyu Xue(薛积禹)1
1 School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
2 School of Electronic Engineering, Xidian University, Xi'an 710071, China
Abstract  With the rapid development of the fifth-generation (5G) mobile communication technology, the application of each frequency band has reached the extreme, causing mutual interference between different modules. Hence, there is a requirement for detecting filtering and preventing interference. In the troposphere, over-the-horizon propagation occurs in atmospheric ducts and turbulent media. The effects of both ducting and turbulence can increase the probability of occurrence of long-distance co-channel interference (CCI), in turn, severely affecting the key performance indicators such as system access, handover and drop. In the 5G era, to ensure communication channels and information security, CCI must be reduced. This paper introduces a scattering parabolic equation algorithm for calculating signal propagation in atmospheric ducts on irregular terrain boundaries. It combines Hitney's radio physical optical model and Wagner's nonuniform turbulent scattering model for calculating the tropospheric scattering in an evaporation duct or a surface-based duct. The new model proposes a tropospheric scattering parabolic equation algorithm for various tropospheric duct environments. Finally, as a specific case, the topographical boundaries between several cities in the East China Plain were considered, and the over-the-horizon propagation loss was simulated for various ducting and turbulent environments. The simulation results were used to evaluate whether CCI would occur between cities in a specific environment.
Keywords:  atmospheric duct      tropospheric turbulence      co-channel interference      terrain parabolic equation  
Received:  29 July 2021      Revised:  15 October 2021      Accepted manuscript online:  27 October 2021
PACS:  41.20.Jb (Electromagnetic wave propagation; radiowave propagation)  
  42.25.Dd (Wave propagation in random media)  
  42.25.Fx (Diffraction and scattering)  
  42.25.Gy (Edge and boundary effects; reflection and refraction)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 62005205, 62071359, and 61775175) and Natural Science Basic Research Program of Shaanxi, China (Grant No. 2020JQ-331).
Corresponding Authors:  Xing Guo     E-mail:

Cite this article: 

Kai Yang(杨凯), Zhensen Wu(吴振森), Xing Guo(郭兴), Jiaji Wu(吴家骥), Yunhua Cao(曹运华), Tan Qu(屈檀), and Jiyu Xue(薛积禹) Estimation of co-channel interference between cities caused by ducting and turbulence 2022 Chin. Phys. B 31 024102

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