Time modulation array multimode electromagnetic vortex transmitter and use method thereof

A time modulation and transmitter technology, applied in space transmit diversity, modulated carrier system, electrical components, etc., can solve the problem of insufficient joint multiplexing research, reduce algorithm complexity, improve work performance, and improve spectral efficiency. Effect

Inactive Publication Date: 2019-09-06
CHONGQING UNIV OF POSTS & TELECOMM
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  • Claims
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Problems solved by technology

[0005] At present, the research on electromagnetic vortex wireless communication technology has been relatively in-depth, but for the combination of electromagnetic vortex and other modulation techniques

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  • Time modulation array multimode electromagnetic vortex transmitter and use method thereof
  • Time modulation array multimode electromagnetic vortex transmitter and use method thereof
  • Time modulation array multimode electromagnetic vortex transmitter and use method thereof

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Embodiment Construction

[0043] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0044] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should n...

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Abstract

The invention relates to a time modulation array multimode electromagnetic vortex transmitter and a use method thereof, and belongs to the technical field of radio wave propagation. The switch modulation electromagnetic vortex transmitter comprises a baseband signal processing unit, a high-speed radio frequency switch and a uniform circular antenna array. The baseband signal processing unit is used for generating a time switch sequence, the sequence is used for controlling periodical opening and closing of each radio frequency switch, the high-speed radio frequency switch controls a sending instruction of a radio frequency signal according to the switch sequence, and the uniform circular antenna array is used for emitting the same radio frequency signal with time delay. According to the transmitter, a method of periodically opening and closing the high-speed switch is used, so that the transmitted signal generates an electromagnetic vortex signal with a plurality of modes and harmonicfrequencies, the spectrum efficiency of the electromagnetic wave in a line-of-sight communication scene is improved, and compared with the traditional electromagnetic vortex wave transmitter, the transmitter disclosed by the invention can greatly reduce the modulation complexity of the vortex signal. In a four-unit receiving and transmitting system, the frequency efficiency can be improved by 10%.

Description

technical field [0001] The invention belongs to the technical field of radio wave propagation, in particular to a method for using a TMAs-based vortex electromagnetic wave transmitter. Background technique [0002] Massive multiple-input-multiple-output (Massive MIMO) technology, as one of the key technologies of the fifth-generation mobile wireless communication system, refers to the integration of multiple transmit antenna units at the base station. With the emergence of Massive MIMO technology, the channel capacity is greatly improved by utilizing the spatial degree of freedom. However, Massive MIMO technology still faces many practical challenges. For example, the high hardware overhead of the transmitter and the extremely high computational complexity of baseband signal processing. In addition, based on realistic three-dimensional spatial information transmission scenarios, three-dimensional (Three-dimensional, 3D) MIMO has also been proposed to explore an additional ...

Claims

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Application Information

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IPC IPC(8): H04B7/0456H04B7/06H04L27/26
CPCH04B7/0469H04B7/0602H04L27/2628
Inventor 王洋刘杰胡韬
Owner CHONGQING UNIV OF POSTS & TELECOMM
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