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Multi-channel Orbital Angular Momentum Encoding and Decoding Method Based on Hologram

A coding and decoding method and technology of orbital angular momentum, which can be applied to short-distance systems, electrical components, electromagnetic wave transmission systems, etc., can solve problems such as not being able to meet the needs of multiple users for communication

Active Publication Date: 2022-03-11
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above content only realizes the dissemination of images / data of a single channel (single receiver), and cannot meet the communication needs of multiple users located in different locations
Therefore, there are still many difficulties and challenges in how to use OAM codec / code to realize the communication requirements of multiple receivers in different locations

Method used

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  • Multi-channel Orbital Angular Momentum Encoding and Decoding Method Based on Hologram
  • Multi-channel Orbital Angular Momentum Encoding and Decoding Method Based on Hologram
  • Multi-channel Orbital Angular Momentum Encoding and Decoding Method Based on Hologram

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Embodiment Construction

[0041] In order to further illustrate the present invention, the present invention is described in detail below in conjunction with the examples.

[0042] Such as figure 1 Shown is a conceptual diagram of a hologram-based multi-channel orbital angular momentum encoding and decoding method. figure 1 (a) is the general concept, figure 1 (b) is an encoded data structure, figure 1 (c) is the encoding rule.

[0043]Step 1: Data partitioning

[0044] Such as figure 1 As shown in (b), the binary data to be sent is divided into 16-bit groups. Each group of 16-bit data is further divided into 4 groups of 4 bits long, and the 4 groups represent channels 1-4 respectively, and their data content represents the data to be transmitted by the channel.

[0045] Step 2: Data Encoding

[0046] according to figure 1 According to the encoding rule shown in (c), 4-bit data can be represented as 16 hexadecimal symbols (0-F), and each hexadecimal symbol can be encoded into one of the 16 OAM ...

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Abstract

The invention discloses a multi-channel orbital angular momentum encoding and decoding method based on a hologram, which belongs to the technical field of multi-channel encoding and decoding. For the first time, the invention integrates multiple OAM channels into a hologram to construct four independent OAM encoding channels. Change the OAM mode in each hologram to realize the transmission of different OAM modes along 4 independent channels, and design a decoding hologram based on Damman vortex grating to realize simultaneous decoding of various OAM modes received by each channel And convert it into corresponding data, so as to realize the multi-channel data transmission method based on hologram and OAM encoding / decoding.

Description

technical field [0001] The invention belongs to the technical field of multi-channel coding and decoding, and in particular relates to a multi-channel orbital angular momentum coding and decoding method based on a hologram. Background technique [0002] In recent years, with the development of big data, cloud computing, artificial intelligence, and fifth-generation communication technologies, the existing communication channel capacity can no longer meet the explosive growth of new technologies in channel capacity. If there are no new ways to expand the channel capacity, then the channel will surely encounter its capacity bottleneck in the near future. To improve channel capacity and spectral efficiency, physical quantities such as phase, polarization, time, amplitude, wavelength, and frequency have been extensively investigated and studied in the traditional field of optical physics. Channel capacity has been significantly increased by employing methods such as wavelength ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/114H04B10/516H04B10/67
CPCH04B10/1143H04B10/516H04B10/676
Inventor 王晓晖庄立运郭新年季仁东杨松何晓凤
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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