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Multi-mode irregular OAM electromagnetic wave generation and separation method and device based on UCA antenna

A multi-mode, electromagnetic wave technology, applied to radio transmission systems, electrical components, multi-frequency code systems, etc., can solve the problem of hollow divergence that has not been fundamentally solved, and achieve the effect of long-distance wireless communication

Inactive Publication Date: 2019-06-18
XIDIAN UNIV
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Problems solved by technology

Some literature pointed out that special lens materials are used to converge the vortex beam to alleviate the divergence problem of the vortex beam. The effect is considerable, but the problem of hollow divergence has not been fundamentally solved. obvious

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  • Multi-mode irregular OAM electromagnetic wave generation and separation method and device based on UCA antenna
  • Multi-mode irregular OAM electromagnetic wave generation and separation method and device based on UCA antenna
  • Multi-mode irregular OAM electromagnetic wave generation and separation method and device based on UCA antenna

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Embodiment Construction

[0041] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0042] refer to figure 1 The UCA antenna-based multi-mode irregular OAM electromagnetic wave generation method provided by the embodiment of the present invention includes the following steps:

[0043] S101, for information sequence Perform IDFT transformation and normalization processing to obtain the excitation required for the N array elements of the UCA antenna to generate multi-mode regular OAM electromagnetic waves in,

[0044]

[0045] In formula (1), n=0,1,...,N-1.

[0046] S102, using Zadoff-Chu sequence pairs Perform phase perturbation to generate multi-mode irregular OAM electromagnetic waves, where the expression of the Zadoff-Chu sequence is:

[0047]

[0048] Among them, the N array elements of the UCA antenna generate the antenna excitation required for multi-mode irregular OAM electromagnetic waves n=0,1,...,...

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Abstract

A multi-mode irregular OAM electromagnetic wave generation and separation method and device based on UCA antenna are provided. The method comprises the following steps of By performing IDFT transformation and normalization on the information sequence, generating the N elements of the UCA antenna to generate multi-modal regular OAM electromagnetic waves; performing the excitation by Zadoff-Chu sequence pairs to generate multi-modal irregular OAM electromagnetic waves so that the traditional vortex electromagnetic wave has the non-hollow feature, thereby achieving more efficient use of high-order vortex electromagnetic waves for long-distance wireless communication; by calculating the channel estimation vector in the case of perfectly estimating the channel state in the line-of-sight transmission scenario and when the UCA antennas at both ends of the transmission and reception are aligned with each other, subjecting the generated signal pair to DFT transformation according to the estimation vector, and subjecting the signal pair to the N mode. The separation of information obtains the accurate and estimated values of the modulation information carried by the multi-modal irregular OAMelectromagnetic waves, respectively, and realizes the separation of multi-modal irregular OAM electromagnetic waves.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a UCA antenna-based multi-mode irregular OAM electromagnetic wave generation and separation method and device. Background technique [0002] Nowadays, information exchange is demanded all the time, especially the urgent construction of "information highway", which has played an important role in promoting the development of modern social productivity. With the advancement of global informatization, wireless communication technology has also entered the stage of modernization, playing an increasingly important role in continuous innovation. In the field of wireless communication, large-capacity transmission and high spectral efficiency have been the unshakable development goals that have always inspired many scientists to keep moving forward in exploration. Among them, the transmission technology based on multiple antenna multiple input multiple output (Multiple In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0413H04L27/26
Inventor 张海林程文驰张珂依吕润宇刘毅任志源秦凡岳鹏
Owner XIDIAN UNIV