Wireless energy-carrying relay system and method capable of guaranteeing information security

A wireless energy carrying and relay system technology, applied in radio transmission systems, diversity/multi-antenna systems, transmission systems, etc., can solve the problem that the spectral efficiency and energy efficiency of beamforming schemes are not fully utilized, and achieve improved spectrum and The utilization rate of energy resources and the effect of ensuring the security of information communication

Active Publication Date: 2019-04-09
南方电网互联网服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spectral efficiency and energy efficiency of beamforming schemes based on null space are not fully utilized

Method used

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  • Wireless energy-carrying relay system and method capable of guaranteeing information security
  • Wireless energy-carrying relay system and method capable of guaranteeing information security
  • Wireless energy-carrying relay system and method capable of guaranteeing information security

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Embodiment

[0049] Such as Figure 1-4 As shown, the wireless energy-carrying relay system for ensuring information security in the present invention includes: a source terminal, a plurality of relay terminals, a legal receiving terminal, an energy collection terminal and an eavesdropper, and each relay terminal is connected to the source terminal respectively. end, legal receiver, energy harvester and eavesdropper are connected. The wireless energy carrying relay system is a two-hop amplification and forwarding multi-relay network. In this embodiment, it includes K multi-antenna relay terminals, and each relay terminal is equipped with N antennas; the energy receiving end is equipped with M antennas; The source, legitimate receiver, and eavesdropper are all equipped with a single antenna. Assuming that there is no direct link connection between the source and the legal receiver, in the first time slot, the source sends the signal to the relay; in the second time slot, the relay receives...

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Abstract

The invention relates to the technical field of wireless communication, in particular to a wireless energy-carrying relay system and method for guaranteeing information safety. The system comprises asource end, a plurality of relay ends, a legal receiving end, an energy collection end and an eavesdropper. Each relay end is respectively connected with the source end, the legal receiving end, the energy collection end and the eavesdropper. The safe communication of a physical layer is guaranteed, the wireless energy constraint is satisfied, the problem of safe reachable rate maximization of theindependent power constraint of each relay end is solved, and a local optimal safe beam forming matrix on each relay end for guaranteeing the safety of the physical layer can be obtained through an alternative optimization method. According to the system and method, the information beam and the energy beam of a relay can be aligned with the target user, the frequency spectrum and energy resourceutilization rate of the relay wireless communication system is improved, and the information communication security of the system is ensured.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a wireless energy carrying relay system and method for ensuring information security. Background technique [0002] As a key technology to solve the problems of channel fading and energy attenuation, relay technology is especially suitable for combining with energy-constrained networks. Wireless energy harvesting technology is a key technology especially suitable for solving the problem of energy shortage in energy-constrained networks. Therefore, the combination of relay technology and energy harvesting technology is of great significance for the research of energy constrained networks. [0003] In recent years, cooperative transport approaches using trusted relays to improve physical layer security performance have attracted increasing attention. There are three main relay protocols for cooperative secure transmission: amplification and forwarding and decoding ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/10H04W40/22H04B7/06H04L5/00
CPCH04B7/0617H04L5/0064H04W40/10H04W40/22
Inventor 赵赛杨钊田茂新黄高飞
Owner 南方电网互联网服务有限公司
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