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Method for communicating by vortex radio waves

A radio wave signal and vortex technology, applied in electrical components, channel estimation, radio transmission systems, etc., can solve the problems of difficult signal resolution, small phase difference in receiving multiple vortex radio waves, etc., and achieve the effect of solving demodulation problems

Active Publication Date: 2015-02-18
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0009] The present invention provides a communication method using vortex radio waves, which uses the azimuth angle integration method to realize vortex radio wave demodulation, and solves the problem of phase difference in receiving multiple vortex radio waves in the existing communication method using vortex radio waves Small and difficult to distinguish signals

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] Embodiments of the present invention include signal transmission, signal reception, topological charge acquisition, and vortex radio wave demodulation steps:

[0039] (1) Signal transmission steps:

[0040] Set the vortex antenna at the transmitter, and send 2 vortex radio signals at the same time:

[0041]

[0042]

[0043] 1st V 1 (t) has a frequency of 2×10 9 Hz=2GHz, the topological charge is 1;

[0044] 2nd V 2 The frequency of (t) is 3×10 9 Hz=3GHz, the topological charge is 2;

[0045] Among them, t is time, azimuth angle

[0046] figure 1 is the three-dimensional schematic diagram of the first vortex radio signal, figure 2 is a three-dimensional schematic diagram of the second vortex radio signal; figure 1 , figure 2 Among them, the x-axis is the horizontal axis, representing time, and the unit is ns; the y-axis is pe...

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Abstract

The invention discloses a method for communicating by vortex radio waves, belongs to a radio communication method and solves the problems of low phase difference and difficulty in signal resolution during receiving of a plurality of vortex radio waves in the existing methods for communicating by the vortex radio waves. The method includes steps of signal transmission, signal receiving, topological load acquisition and demodulation of the vortex radio waves. The method is simple and feasible, extra hardware investment is omitted, the core part of a communication system is not needed to be modified, the physical characteristics of mutual orthogonality of the vortex radio waves are used to demodulate the vortex radio waves via the azimuth angle integration method on the premise of given topological load of the vortex radio waves to be demodulated, and the problems of low phase difference and difficulty in signal resolution of the vortex radio waves when the vortex radio waves are demodulated by the phase difference are solved. Meanwhile, the signal amplitude of the vortex radio waves to be demodulated is increased, even if with noise interference, the demodulation signals can be easily detected, and the method can be applied to the vortex radio wave radio-communication system.

Description

technical field [0001] The invention belongs to a wireless communication method, in particular to a communication method using vortex electric waves. Background technique [0002] In recent years, due to the rapid development of mobile data services, mobile data has shown explosive growth, and the demand for communication expansion has continued to increase. In existing communication methods, communication signals are multiplexed using degrees of freedom such as frequency, time, and polarization. However, these resources limited. [0003] The traditional radio wave signal belongs to the plane electromagnetic wave, and the wave front or equiphase plane is a plane. The wave front or isophase surface of the vortex electric wave is a spiral structure, and the vortex electric wave with a spiral phase structure carries an angular momentum, which is called the orbital angular momentum. Electromagnetic waves with orbital angular momentum carry a phase rotation factor here k n I...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/08H04B7/06H04B7/01
CPCH04L25/024H04L25/03
Inventor 江涛朱启标
Owner HUAZHONG UNIV OF SCI & TECH
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