%0 Journal Article
%A LI Lu
%A LIU Liu
%A TAN Zhenhui
%A ZHOU Tao
%A ZHANG Jiachi
%T Channel Characterization of Nonreciprocal Beam Patterns Based on the 3D Geometric Channel Model
%D 
%R 10.13190/j.jbupt.2021-177
%J Journal of Beijing University of Posts and Telecommunications
%P 98-103
%V 45
%N 2
%X 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.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2021-177