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A Modeling Method of Combined Amplitude and Phase of Dynamic Plasma Sheath Channel

A plasma and channel technology, used in transmission monitoring, electrical components, sustainable transportation, etc., to solve problems such as inability to simulate signal amplitude and phase

Active Publication Date: 2022-06-07
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

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  • A Modeling Method of Combined Amplitude and Phase of Dynamic Plasma Sheath Channel

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Embodiment Construction

[0031] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various 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 will 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 for jointly modeling the amplitude and phase of the channel based on the idea of ​​the Markov chain includes the following steps:

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

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

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Abstract

The present invention provides a dynamic plasma sheath channel amplitude and phase joint modeling method. First, the amplitude and phase of the dynamic plasma sheath channel are input simultaneously; then the amplitude and phase are drawn in a two-dimensional plane, and the The two-dimensional plane is divided into several intervals with the same area. If there is data in a certain interval, it is defined as the Markov chain channel state, and the position of the channel state in the plane is recorded; the probability of each initial state of the Markov channel is calculated. and the probability transition matrix between states, and perform Markov chain simulation to obtain the predicted state sequence; restore the generated state sequence to the position of the plane interval, and the range of horizontal and vertical coordinates corresponding to the interval position is the range predicted by the channel model , take any point from the interval as the channel characteristic at the current moment. The channel model established by the invention can more completely describe the influence of the channel on the signal, 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 the amplitude and phase of a dynamic plasma sheath channel. Background technique [0002] When the aircraft is flying at a high speed, it will violently rub against the atmosphere, and a plasma sheath will be formed on the surface. Due to the influence of factors such as the external flight environment of the aircraft, its own flight state and the turbulence inside the plasma sheath, the sheath is dynamic and time-varying. The dynamic sheath absorbs, scatters and reflects the carrier signal, causing random energy attenuation and phase fluctuations in the carrier signal. Therefore, it is necessary to establish an efficient and time-varying channel model to recognize the changing mechanism of the channel and develop new communication technologies. [0003] The established channel model can be applied to the simulation of ...

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Application Information

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Patent Type & Authority Patents(China)
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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