Time-division energy harvesting relay secure transmission scheme based on destination user scrambling

A technology for energy harvesting and secure transmission, applied in the field of wireless communication and physical layer security, which can solve the problem of high network maintenance costs

Active Publication Date: 2017-11-28
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, the research on the wireless network energy simultaneous interpretation technology has received extensive attention. For relay networks that are not convenient for large-scale use of wired energy s

Method used

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  • Time-division energy harvesting relay secure transmission scheme based on destination user scrambling
  • Time-division energy harvesting relay secure transmission scheme based on destination user scrambling
  • Time-division energy harvesting relay secure transmission scheme based on destination user scrambling

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Embodiment Construction

[0065] Such as figure 1 As shown, it is a block diagram of the communication system for the application of the time-division energy harvesting relay security transmission scheme based on the purpose user scrambling proposed in this patent. The half-duplex relay network shown in the figure includes two nodes, namely a source, a relay, and multiple sink nodes (ie, destination user nodes). All nodes are single-antenna, and the relay is a passive node. Its work can be powered by energy harvesting. Considering the long distance between the source and the destination, there is no direct path.

[0066] Such as figure 2 As shown, the time-division energy harvesting relay security transmission scheme based on target user scrambling disclosed by the present invention is applied to the above-mentioned multi-user relay network, and the transmission scheme includes:

[0067] In the first time slot, the relay converts the radio frequency signal received by the source through the energy ...

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Abstract

The invention discloses a time-division energy harvesting relay secure transmission scheme based on destination user scrambling. The scheme comprises the following steps: in a first time slot, a relay converts a received radio frequency signal into energy through an energy harvesting technology; in a second Time slot, the relay selects one destination user with the largest channel power gain from multiple destination users as a legal user and serves the legal user, remaining unselected destination users serve as potential eavesdropping users, a source sends useful information to the relay, and the legal destination user sends a scrambled signal to the relay; and in a third time slot, after the signal received by the relay is amplified, the signal is broadcast to a destination by use of energy obtained in the first time slot, wherein the destination includes the selected legal user and the potential eavesdropping users. According to the invention, by combining a cooperative scrambling technology with a time-division energy harvesting technology reasonably, the receiving signal-to-noise ratio of an eavesdropping channel is reduced, the network security performance is improved, and safe transmission of the information is guaranteed.

Description

technical field [0001] The patent of the present invention relates to the field of wireless communication and physical layer security, in particular to a time-division energy harvesting relay security transmission scheme based on target user scrambling. Background technique [0002] Scrambling technology is a widely used technology, it is suitable for relay network, in the relay network, the destination user node sends the scrambled signal to the relay, and the relay is processed, amplified and forwarded to broadcast the scrambled signal to the destination (that is, Destination user), since the destination node knows the scrambling signal, it can be eliminated, and the eavesdropping user cannot know the scrambling signal information in advance, and then achieve the effect of interference, thereby improving the security performance of the communication system. [0003] Multi-user diversity is a widely used technology, which utilizes the characteristics of independent fading c...

Claims

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Application Information

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IPC IPC(8): H04W40/12H04W40/22H04W52/24H04W52/26H04W52/34H04W52/46H04W72/04H04W72/08
CPCH04W40/12H04W40/22H04W52/241H04W52/267H04W52/346H04W52/46H04W72/0446H04W72/542Y02D30/70
Inventor 赵睿方嘉佳贺玉成
Owner HUAQIAO UNIVERSITY
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