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Rectangular tunnel wireless propagation channel modelling method

A channel modeling and wireless propagation technology, applied in transmission monitoring, transmission systems, electrical components, etc., can solve problems such as easy neglect

Active Publication Date: 2019-04-16
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

In the 3D scattering model, the elevation angle and azimuth angle are equally important, but it is also easy to ignore

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  • Rectangular tunnel wireless propagation channel modelling method
  • Rectangular tunnel wireless propagation channel modelling method
  • Rectangular tunnel wireless propagation channel modelling method

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Embodiment Construction

[0110] The present invention is described in further detail now in conjunction with accompanying drawing.

[0111] The invention proposes a rectangular tunnel wireless propagation channel modeling method. According to the actual tunnel size, the geometric model of the rectangular tunnel is constructed, and the geometric model is divided into several scatterers, and the scatterers are freely distributed. Propagation routes are obtained based on the positions of aircraft and scatterers. A uniform linear antenna array is arranged on the transmitter and receiver, and the diffuse reflection and line-of-sight components of the tunnel model are obtained by using the geometric relationship between the transmitter, receiver and scatterers in the rectangular tunnel, and the sum of the two components can be obtained. Time-varying transfer function in order to study the time, space and frequency characteristics of the rectangular tunnel model channel. Use the geometric relationship in th...

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Abstract

The invention provides a rectangular tunnel wireless propagation channel modelling method for a statistical channel model for a tunnel V2V scattering environment. A uniform linear antenna array is provided for each of a mobile transmitter and a receiver; supposing that scatters are freely distributed on a tunnel wall, and the transmitter and the receiver are located in mobile state; LOS and NLOS scattering conditions are considered in a rectangular tunnel scattering region; a 3D tunnel geometric model is analyzed to obtain a space-time frequency mutual-correlation function, a time self-correlation function and a frequency correlation function. For verifying the rationality and feasibility of the model, the theoretical parameter and a reference model are contrasted, a result shows that thetime self-correlation function and the frequency correlation function of the model conform to a reference channel model. And meanwhile, the influence on the Doppler power spectrum density and the MIMOchannel capacity by the model parameters is researched. By computing the statistical feature parameters of the rectangular channel, the tunnel V2V communication system performance is improved.

Description

technical field [0001] The invention belongs to the field of statistical characteristic analysis of tunnels, and in particular relates to a modeling method for rectangular tunnel wireless propagation channels. Background technique [0002] In recent years, the demand for vehicle-to-vehicle (V2V) communication systems in vehicular ad hoc networks (VANETs) and intelligent transportation systems (ITS) has continued to grow, thus arousing widespread attention. In order to develop a more stable and efficient V2V communication system, accurate description of the propagation channel is required. Compared with traditional cellular systems, the antenna heights of communication nodes in V2V links are usually lower than surrounding scatterers such as buildings and trees. Due to this difference in propagation environments, extensive research on 2D and 3D models of V2V communication channels is required. In the above 2D V2V model, Under the assumption of isotropic and non-isotropic s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/391
CPCH04B17/391
Inventor 周杰陈珍
Owner NANJING UNIV OF INFORMATION SCI & TECH
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