Fading Characteristics of Wireless Channel on High-Speed Railway in Hilly Terrain Scenario

الملخص EN

This paper focuses on the fading characteristics of wireless channel on High-Speed Railway (HSR) in hilly terrain scenario.

Due to the rapid speed, the fading characteristics of HSR channel are highly correlated with time or Transmit-Receive distance and have their own special property.

To investigate the fading characteristics, the measurement is conducted on the Guangzhou-Shenzhen passenger-dedicated line in China with the speed of 295 km/h in the data-collection area at 2.4 GHz.

From the measured data, the amplitude of each path is estimated by using the Subspace-Alternating Generalized Expectation-Maximization (SAGE) algorithm along with other parameters of channel impulse responses.

Then the fading parameters, including path loss, shadow fading, and K-factor, are analysed.

With the numerical results in the measurement and analysis, the fading characteristics have been revealed and modelled.

It is supposed that this work has a promotion for HSR communication system design and improvement.