Dual non-stationary channel model of Internet of Vehicles

Abstract

The invention provides a vehicle-mounted channel model, and a real and reliable channel model is provided for simulation and analysis of a vehicle-mounted system by jointly modeling dual non-stationary characteristics of a time domain and a frequency domain in an Internet of Vehicles channel through a path birth and extinguish process and generation of taps with correlation in a scene of fast time variation and dual selectivity of the Internet of Vehicles. The scheme is named as a dual non-stationary channel modeling scheme (VENCM) based on the scene of the Internet of Vehicles, and the method comprises the following steps of: establishing a dual non-stationary channel modeling scheme (VENCM) based on the scene of the Internet of Vehicles; in the invention, according to the modeling step of the traditional vehicle-mounted channel model, the correlation of each path along with time and between taps with different time delays is further modeled, so that the dual non-stationary modeling of the vehicle-mounted channel is completed. According to the scheme, four important characteristics in a vehicle-mounted channel can be simulated, namely, the non-stationary characteristic of a time domain and a frequency domain, the existence of a sight distance part and the abundant Doppler characteristic.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a dual non-stationary channel model jointly considered in a vehicle networking scene, which can provide a real and reliable channel model for future vehicle system simulation and analysis. Background technique: [0002] With the rapid development of research on intelligent transportation systems and vehicle ad hoc networks, the research on vehicle communication channels is becoming more and more popular. In-vehicle communication specifically refers to the means of applying advanced wireless communication technology to vehicles based on the development of intelligent transportation system and sensor network technology to realize highly informatized and intelligent transportation. The so-called vehicle-to-vehicle communication, that is, vehicle-to-vehicle information exchange, is one of the key technologies of the future intelligent transportation system. It enabl...

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Problems solved by technology

[0006] However, there are few existing works and there is no vehicle-mounted NGSM channel model that can completely describe the above four vehicle-mounted channel characteristics, and focus on modeling the dual non-stationary characteristics of the Internet of Vehicles, non-stationary characteristics in the time domain and frequency domain

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