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Calculation method for path losses during single scattering process in non-line-of-sight ultraviolet communication

A path loss and single-scattering technology, which is applied in the field of ultraviolet light communication, can solve the problems of difficult simulation of single-scattering model and long simulation time of MC algorithm.

Active Publication Date: 2016-06-15
XI'AN POLYTECHNIC UNIVERSITY
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for calculating the path loss of the non-direct-view ultraviolet light communication single scattering process, which solves the problems of the existing classic single scattering model simulation difficulties and the MC algorithm simulation time being too long

Method used

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  • Calculation method for path losses during single scattering process in non-line-of-sight ultraviolet communication
  • Calculation method for path losses during single scattering process in non-line-of-sight ultraviolet communication
  • Calculation method for path losses during single scattering process in non-line-of-sight ultraviolet communication

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Embodiment

[0132] In order to verify the performance of the ergodic element method, we simulated and compared the path loss between the algorithm and the MC single scattering method.

[0133] Set the detection surface radius of Rx to 1.5×10 -2 m, d=100m, θ t = 30°, θ r = 60°, alpha t = 0°, α r ={0°, 10°, 20°, 30°, 40°}. The comparison of simulation results is shown in the figure Figure 4 As shown, the left ordinate is the path loss (PL), and the right ordinate is the common scatterer volume |V|. The four curves in the figure represent the change curve of the path loss obtained by the Monte Carlo MC multiple scattering method, the change curve of the path loss obtained by the MC single scattering method, and the change curve of the path loss obtained by the ergodic microelement method And the volume change curve of public scatterers obtained by ergodic microelement method. Note that with α r PL increases, and |V| gradually decreases. The PL curve obtained by the ergodic element...

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Abstract

The invention discloses a calculation method for path losses during a single scattering process in non-line-of-sight ultraviolet communication. The method comprises: step one, parameters of a transmitting terminal and a receiving terminal are set, an area V' and a public scattering body V are defined, and a range of the V' is solved; step 2, the area V' is divided into a plurality of micro elements and coordinates of the micro elements are obtained in a spherical coordinate frame; step three, traversal of the area V'is carried out and the area V' is segmented into a plurality of micro elements V'', whether the micro elements V'' are in the public scattering body V is determined, and if so, the energy that is scattered by the micro elements V'' and then is received by Rx is calculated and is added, and calculation is carried out to obtain the total energy received by the Rx, so that a path loss value is solved. According to the provided calculation method, the simulation time is short; the path loss of the communication system is calculated easily; and the fitting with a simulation result of an MC method is high.

Description

technical field [0001] The invention belongs to the technical field of ultraviolet light communication, and in particular relates to a method for calculating path loss in a single scattering process of non-direct-view ultraviolet light communication. Background technique [0002] Ultraviolet light communication is to use ultraviolet light as the carrier of information transmission, and load the information to be transmitted on the ultraviolet light to realize the sending and receiving of information. In wireless laser communication, a direct-view communication method is adopted, that is, the transmitting end and the receiving end must be aligned. Non-line-of-sight communication refers to the process that when the ultraviolet photons emitted by the transmitter are transmitted in the atmosphere, because the wavelength of ultraviolet light is very short, it is scattered by atmospheric particles and can bypass obstacles to reach the receiving end. As long as the divergence angl...

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Application Information

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IPC IPC(8): H04B10/073
CPCH04B10/073
Inventor 宋鹏宋菲王建余熊扬宇
Owner XI'AN POLYTECHNIC UNIVERSITY
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