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Researching on the Deterministic Channel Models for Urban Microcells Considering Diffraction Effects

Author

Listed:
  • Chunzhi Hou

    (School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China)

  • Zhensen Wu

    (School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China)

  • Jiaji Wu

    (School of Electronic Engineering, Xidian University, Xi’an 710071, China)

  • Yunhua Cao

    (School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China)

  • Leke Lin

    (National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao 266107, China)

  • Xiangming Guo

    (National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao 266107, China)

  • Changsheng Lu

    (National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao 266107, China)

Abstract

Deterministic channel models, such as the three-dimensional (3D) ray launching method, can yield wireless channel parameters. In the non-line-of-sight (NLOS) propagation, the outdoor 3D ray launching method that considers diffraction effects is more accurate than the one that does not. While considering the diffraction effect, obtaining the diffraction point is challenging. This paper proposed a method for determining diffracted rays using the receiving sphere method in 3D ray launching. The diffraction point is determined using the shortest distance method between two straight lines, and the signal loss from the transmitting to receiving antennas is obtained. Furthermore, experiments on a millimeter wave in a microcell scenario were performed. The test results of the wireless channel parameters were compared with theoretical calculations. The results obtained via the 3D ray launching method that only considers the specular reflection and direct rays agree with the experimental results in the line-of-sight (LOS); furthermore, they generate larger errors compared with the experimental results in the NLOS. The results obtained via the 3D ray launching method that considers the direct ray, reflected rays, and diffracted rays agree with the experimental results both in the LOS and NLOS. Therefore, the 3D ray launching method that considers the diffraction effect can improve the prediction accuracy of the millimeter wave channel parameters in a microcell.

Suggested Citation

  • Chunzhi Hou & Zhensen Wu & Jiaji Wu & Yunhua Cao & Leke Lin & Xiangming Guo & Changsheng Lu, 2021. "Researching on the Deterministic Channel Models for Urban Microcells Considering Diffraction Effects," Energies, MDPI, vol. 14(8), pages 1-17, April.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:8:p:2143-:d:534241
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    References listed on IDEAS

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    1. Rony Kumer Saha, 2020. "3D Spatial Reuse of Multi-Millimeter-Wave Spectra by Ultra-Dense In-Building Small Cells for Spectral and Energy Efficiencies of Future 6G Mobile Networks," Energies, MDPI, vol. 13(7), pages 1-19, April.
    2. Ali Tavsanoglu & César Briso & Diego Carmena-Cabanillas & Rafael B. Arancibia, 2021. "Concepts of Hyperloop Wireless Communication at 1200 km/h: 5G, Wi-Fi, Propagation, Doppler and Handover," Energies, MDPI, vol. 14(4), pages 1-15, February.
    3. Tan Kim Geok & Ferdous Hossain & Alan Tan Wee Chiat, 2018. "A novel 3D ray launching technique for radio propagation prediction in indoor environments," PLOS ONE, Public Library of Science, vol. 13(8), pages 1-14, August.
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