标题：3D non-stationary wideband circular tunnel channel models for high-speed train wireless communication systems
作者：Liu, Yu; Wang, Cheng-Xiang; Lopez, Carlos; Ge, Xiaohu
作者机构：[Liu Yu] Shandong University, Shandong Provincial Key Lab of Wireless Communication Technologies, Ji'nan, Shandong 250100, China.;[Wang Chengxiang] Sh 更多
通讯作者地址：[Wang, CX]Shandong Univ, Shandong Prov Key Lab Wireless Commun Technol, Jinan 250100, Peoples R China;[Wang, CX]Heriot Watt Univ, Sch Engn & Phys Sci, 更多
关键词：non-stationary; statistical properties; tunnel channel model; GRSM;; channel measurement
摘要：This paper proposes three-dimensional (3D) non-stationary wideband circular geometry-based stochastic models (GBSMs) for high-speed train (HST) tunnel scenarios. Considering single-bounced (SB) and multiple-bounced (MB) components from the tunnel's internal surfaces, a theoretical channel model is first established. Then, the corresponding simulation model is developed using the method of equal volume (MEV) to calculate discrete angular parameters. Based on the proposed 3D GBSMs, important time-variant statistical properties are investigated, such as the temporal autocorrelation function (ACF), spatial cross-correlation function (CCF), and space-Doppler (SD) power spectrum density ( PSD). Results indicate that all statistical properties of the simulation model, verified by simulation results, can match well those of the theoretical model. The statistical properties of the proposed 3D C BSMs are further validated by relevant measurement data, demonstrating the flexibility and utility of our proposed tunnel GBSMs.