Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

Journal of Beijing University of Posts and Telecommunications ›› 2022, Vol. 45 ›› Issue (2): 98-103.doi: 10.13190/j.jbupt.2021-177

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Channel Characterization of Nonreciprocal Beam Patterns Based on the 3D Geometric Channel Model

ZHANG Jiachi1, LIU Liu1, LI Lu2, TAN Zhenhui1, ZHOU Tao1   

  1. 1. School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China;
    2. School of Rail Transportation, Shandong Jiaotong University, Jinan 250357, China
  • Received:2021-08-18 Published:2021-12-16

Abstract: To investigate the influence of nonreciprocal beam patterns (NBP) on the wireless channel characteristics, a 3-dimensional (3D) geometric channel model is used to analyze the small-scale fading characteristics of the millimeter-wave wireless channel under this pattern in a macro-cell scenario. Specifically, a non-stationary 3D geometric channel modeling method is proposed based on the propagation graph theory. Moreover, by adopting transceiver beams, effective scatters are found out to reduce the computational complexity. According the proposed model, the influence of NBP on the selective fading characteristics involving time, frequency, and space domains are also analyzed. Simulation results reveal that the number of effective scatters located inside the intersection of downlink transceiver beams is larger than that of the uplink case, and thus the dispersion effects in Doppler, delay, and angular spreads of downlink transceiver beams are more serious than these of the uplink case. Besides, the latter case can be approximated as a line-of-sight scenario with a single propagation path.

Key words: millimeter-wave communication, three dimensional geometric channel model, nonreciprocal beams, channel characteristics

CLC Number: