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Dynamic plasma sheath channel amplitude and phase combined modeling method

A technology of plasma and modeling method, which is applied in the field of combined modeling of plasma sheath channel amplitude and phase, and can solve problems such as inability to simulate signal amplitude and phase

Active Publication Date: 2020-10-27
XIAN UNIV OF TECH +1
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Problems solved by technology

[0006] The purpose of the present invention is to provide a dynamic plasma sheath channel amplitude and phase joint modeling method to solve the problem that the signal amplitude and phase cannot be simulated simultaneously during channel modeling

Method used

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  • Dynamic plasma sheath channel amplitude and phase combined modeling method
  • Dynamic plasma sheath channel amplitude and phase combined modeling method
  • Dynamic plasma sheath channel amplitude and phase combined modeling method

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Embodiment Construction

[0031] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and fully convey the concept of example embodiments to those skilled in the art. The described features or characteristics may be combined in any suitable manner in one or more embodiments.

[0032] see figure 1 , the method of jointly modeling the magnitude and phase of the channel based on the Markov chain idea includes the following steps:

[0033] Step 1: Simultaneously input the influence of the amplitude and phase of the signal under a specific channel environment, assuming that the number N of experimental data is 10,000.

[0034] Step 2: The method of dividing the state of the plasma channel is as follows figure 2 shown. Put the phase cha...

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Abstract

The invention provides a dynamic plasma sheath channel amplitude and phase combined modeling method. The method comprises the steps: firstly, inputting the amplitude and phase of a dynamic plasma sheath channel at the same time; secondly, drawing the amplitude and the phase in a two-dimensional plane, dividing the two-dimensional plane into a plurality of sections with the same area, defining a certain section as a Markov chain channel state if data exists in the certain section, and recording the position of the channel state in the plane; solving the probability of each initial state of theMarkov channel and a probability transition matrix between the states, and carrying out Markov chain simulation to obtain a predicted state sequence; and restoring the generated state sequence to theposition of the plane section, taking the horizontal and vertical coordinate range corresponding to the section position as the range predicted by the channel model, and taking any point from the section as the channel characteristic at the current moment. The channel model established by the method describes the influence of the channel on the signal more completely, and can simulate the influence of the channel on the signal amplitude and phase at the same time.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a modeling method for combining channel amplitude and phase of a dynamic plasma sheath. Background technique [0002] When the aircraft flies at a high speed, it will rub against the atmosphere violently, forming a plasma sheath on the surface. Due to the influence of factors such as the external flight environment of the aircraft, its own flight state, and the turbulent flow inside the plasma sheath, the sheath is dynamic and time-varying. The dynamic sheath will absorb, scatter and reflect the carrier signal, causing random energy attenuation and phase fluctuation of the carrier signal. Therefore, it is necessary to establish an efficient and time-varying channel model to recognize the channel change mechanism and develop new communication technologies. [0003] The established channel model can be applied to different communication system simulatio...

Claims

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Application Information

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IPC IPC(8): H04B17/391
CPCH04B17/3912Y02T90/00
Inventor 刘江凡麻宏宇焦子涵白光辉席晓莉
Owner XIAN UNIV OF TECH
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