A Non-Stationary MIMO Channel Model for High-Speed Train Communication Systems

Abstract

Abstract-This

Performance Investigation of Spatial Modulation Systems Under Non-Stationary Wideband High-Speed Train Channel Models

“…It is therefore necessary to model HST channels with the non-stationary assumption. The first non-stationary regular-shaped geometry-based stochastic model (RS-GBSM) for HST scenarios was proposed in [32], [33], considering the distance between the transmitter (Tx) and the receiver (Rx) as time-varying. In [34], [35], this model was further improved by involving more time-varying parameters such as angles of arrival (AoAs) and angles of departure (AoDs).…”

Channel Measurements and Models for High-Speed Train Communication Systems: A Survey

“…The properties of radio channels in the carriages resemble indoor environment and hence they can be modeled using existing indoor channel models [44]. Therefore, [34], [35], [103]- [105], [111] have focused on modeling the outdoor HST scenarios have been presented in details earlier in this paper in Section II. While most of these scenarios can only be encountered in railway environments, open space scenario is similar to the rural or urban scenarios that can be found in conventional V2I or V2V communication systems.…”

“…Different types of GBSMs differ mainly in the proposed scatterer distributions. Based on the position of the effective scatterers, GBSMs can be further classified as regular-shaped GBSMs (RS-GBSM) such as onering [102], two-ring, and ellipses [103]- [105], and irregular shaped GBSMs (IS-GBSMs) [34], [35], [101].…”

“…However, both of the aforementioned models have assumed that the HST channel satisfies the WSS condition that has been proved incorrect by measurements [46]. To fill in this gap, non-stationary RSGBSMs were proposed in [103]- [106] for wideband MIMO HST channels considering the deployment of MRS on the top of the train. Fig.…”

Broadband Access in Complex Environments: LTE on Railway

“…Existing standardized channel models assume that channels are Wide-Sense Stationary Uncorrelated Scattering (WSSUS) [49] which, according to some authors, is not satisfied in the HST environment [50]. Furthermore, HST channel models differ significantly from those available for other mobile cellular systems [51]: 1) Different scenarios and propagation conditions must be considered: communication channel environment is highly variable (e.g.…”