RIS-assisted NOMA enabled VLC/RF hybrid network secure transmission method

A hybrid network and secure transmission technology, which is applied in the field of RIS-assisted NOMA-enabled VLC/RF hybrid network security transmission, and can solve problems such as physical layer security research of VLC/RF hybrid networks that are not found.

Active Publication Date: 2021-01-26
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no physical layer security research on RIS-assiste

Method used

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  • RIS-assisted NOMA enabled VLC/RF hybrid network secure transmission method
  • RIS-assisted NOMA enabled VLC/RF hybrid network secure transmission method
  • RIS-assisted NOMA enabled VLC/RF hybrid network secure transmission method

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Embodiment

[0094] A reconfigurable intelligent surface assisted NOMA enables a secure transmission method of a VLC / RF hybrid network, comprising the following steps:

[0095] 1) if figure 1 As shown, in the RIS-assisted NOMA-enabled VLC / RF hybrid network, an optical access point OAP is configured on the top of the room, and a circular work table is configured directly below the OAP. The optical beam of the OAP can cover as far as the edge of the table, so NOMA users on the ground cannot directly receive the signal from the OAP. Therefore, a relay node can be set on the desktop, which first receives the optical signal from the OAP, and relays the electrical signal to the RIS after photoelectric conversion; then, the RIS reflects the signal to the NOMA user. During this process, the eavesdropping node eavesdrops on the user's information. The maximum coverage radius of the optical beam of the optical access point is r 0 . The optical access point is equipped with a LED transmitter; the...

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Abstract

The invention discloses an RIS-assisted NOMA enabled VLC/RF hybrid network secure transmission method, which is characterized in that an optical access point is configured at the indoor top, and a relay node is arranged on a desktop right below the optical access point; the optical wave beam of the optical access point can cover the edge of the round table top furthest, so that the NOMA user on the ground cannot directly receive the signal sent by the optical access point, and then the relay node is utilized to relay and transmit the electric signal to a reconfigurable intelligent surface (RIS) after photoelectric conversion; then the RIS reflects the signal to the NOMA user, and the eavesdropping node eavesdrops the information of the user in the process; on the basis of analyzing channelstatistical characteristics of an optical wireless link and a radio frequency wireless link, the safety outage probability and strict positive safety capacity of the VLC/RF hybrid network during amplification forwarding and decoding forwarding transmission are obtained respectively. Simulation verifies that the performance of the secure transmission method provided by the invention is related tothe number of reflection element surfaces, indoor layout, optical access point characteristics and radio frequency transmission characteristics.

Description

technical field [0001] The invention relates to the technical fields of optical wireless communication and radio frequency wireless communication, in particular to a RIS-assisted NOMA-enabled method for secure transmission of a VLC / RF hybrid network. Background technique [0002] With the increasing demand for large-scale interconnection and high-speed communication, academia and industry have launched research on visible light communication (VLC) networks based on non-orthogonal multiple access (NOMA). Compared with OMA's VLC, it can utilize the existing indoor infrastructure while providing lighting and high-speed communication, supporting a large number of users to access the network, and providing superior spectral efficiency. However, NOMA-VLC is limited to indoor short-distance and limited coverage applications, and is only suitable for line-of-sight (LoS) link transmission between transceiver devices. [0003] An effective way to solve this challenge is to use the vi...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/24H04L12/64
CPCH04L63/20H04L41/142H04L12/64H04L2012/6421H04K2203/14H04K3/827
Inventor 赵响孙晋永覃勇乔佳佳孙宇
Owner GUILIN UNIV OF ELECTRONIC TECH
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