Energy harvesting relay safety transmission method adopting artificial noise precoding

A technology of energy harvesting and artificial noise, which is applied in the field of wireless communication and physical layer security, can solve the problems of limited encryption methods and difficulty in adapting to wireless secure communication, so as to improve the effectiveness and reliability of transmission, reduce maintenance costs, and guarantee The effect of transport security

Inactive Publication Date: 2017-02-22
HUAQIAO UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In wireless communication, traditional encryption methods are limited by increasingly powerful hardware and cloud

Method used

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  • Energy harvesting relay safety transmission method adopting artificial noise precoding
  • Energy harvesting relay safety transmission method adopting artificial noise precoding
  • Energy harvesting relay safety transmission method adopting artificial noise precoding

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Embodiment Construction

[0054] Such as Figure 1 to Figure 3 As shown, an energy harvesting relay secure transmission method using artificial noise precoding is applied in a wireless communication system including four nodes of a source S, a relay R, a sink D, and an eavesdropper E, wherein the middle After configuring several antennas, all other nodes are configured with a single antenna, and the transmission of the wireless communication system is divided into two time slots to complete the one-way communication transmission. In the first time slot, the source broadcasts a signal containing energy and confidential information, the sink and the eavesdropper receive the signal, and the relay adopts the maximum ratio combination to collect the received signal and collect the energy and receive the confidential signal; in the second time slot, the relay obtains it to the sink channel state information, and use the artificial noise-assisted precoding strategy to precode the secret information and artifi...

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Abstract

The invention discloses an energy harvesting relay safety transmission method adopting artificial noise precoding, which is applied to a system including four nodes that are a source, a relay, a sink and a wiretapper. The system requires two time slots to complete transmission. In the first time slot, the source broadcasts signals, the sink and the wiretapper receive the signals, and the relay adopts the maximal ratio to combine received signals, harvest energy and receives a secrecy signal. In the second time slot, the relay obtains state information of a channel from the relay to the sink, an artificial noise auxiliary precoding strategy is adopted to carry out precoding of secrecy information and artificial noise, then an amplification forwarding protocol is used for forwarding coding signals, the sink and the wiretapper receive the coding signals, and the received signals during the two time slots are combined at the maximal ratio. The relay safety transmission method applies artificial noise auxiliary precoding to an energy harvesting relay adopting power distribution, so that the remote transmission system limited in energy is enabled to have the great safety transmission performance.

Description

technical field [0001] The invention relates to the field of wireless communication and physical layer security, in particular to an energy collection relay security transmission method using artificial noise precoding. Background technique [0002] With the rapid development of wireless communication technology and the user's further requirements for service quality, communication security has become an important concern. In wireless communication, traditional encryption methods are limited by increasingly powerful hardware and cloud computing capabilities, making it difficult to adapt to higher-speed wireless secure communications in the future. If the information can be protected during signal transmission, the security of information transmission can be significantly improved. Therefore, the physical layer security technology of wireless communication takes advantage of the complex spatial characteristics and time-varying characteristics of the wireless channel environme...

Claims

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Application Information

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IPC IPC(8): H04W12/08H04W40/22H04W52/24H04B7/026H04B7/155H02J50/00H04W12/03
CPCH04B7/026H04B7/15592H04W12/08H04W40/22H04W52/241
Inventor 赵睿林鸿鑫谭星周林贺玉成
Owner HUAQIAO UNIVERSITY
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