Abstract
Millimeter-wave (mmWave) wideband communication is considered as a potential candidate to meet the increasing data rate demands of the onboard passengers in the metro. Channel modeling is important for the system design and evaluation in such environment. Ray-tracing (RT) modeling can accurately trace propagation paths, and has been proven successful in many works. However, it is complicated and time-consuming to work in harsh environments, where dense multi-path components exist and the reverberation effects can happen. To tackle this problem, an hybrid channel modeling approach, which combines the RT method and the propagation graph (PG) method, is proposed and introduced in this work. According to the evaluation results, the proposed method performs better than either the RT or the PG alone model in terms of accuracy and efficiency.
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