Open AccessWireless Channel Measurements and Modeling of LTE Broadband System for High‐Speed Railway Scenarios
Author(s) -
Zhao Hua,
Lyu Qing,
Liu Yachuan,
Chen Jiaxing,
Zhang Shujing
Publication year - 2018
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2018.07.001
Subject(s) - broadband , channel (broadcasting) , computer science , wireless broadband , wireless , computer network , telecommunications , electronic engineering , wireless network , engineering
In high‐speed scenarios, channel model is of vital importance in Long term evolution (LTE) systems. By extensive measurements on Beijing‐Tianjinrailway, this paper proposes a distance‐dependent channel model. Both large‐scale and small‐scale channel characteristics are presented in detail. The large‐scale path loss is modeled under the hierarchical network structure. Small‐scale channel characteristics that include channel impulse response, power delay profile and Doppler spectrum are deduced and analyzed. In particular, a new stage‐wise K‐factor model is proposed. Combined with the cumulative distribution function of Root‐mean squared (RMS) delay spread and the number of paths, they clearly illustrate the distancedependent variances of the channel. Finally, the integrated distance‐dependent channel models are proposed to give a comprehensive description of broadband LTE channel in high‐speed railway scenario.