Tunnel and Non-Tunnel Channel Characterization for High-Speed-Train Scenarios in LTE-A Networks

In this contribution, a measurement campaign for high-speed-train (HST) channels is introduced, which collects the down-link signals of an in-service Long Time Evolution-Advanced (LTE-A) network deployed along the HST railway from Beijing to Shanghai, China. The channel impulse responses (CIRs) are extracted from the received signals, and the concatenated power delay profiles (CPDPs) of the CIRs are illustrated. Measurement scenarios of interest are separated into tunnel and non-tunnel propagation categories according to the delay trajectories of dominant components in channels. The statistics of the delay spreads and K-factor of the channels are investigated for both scenarios. The results illustrate clear distinctions of these characteristics for the two scenarios.