A secure transmission method against active eavesdropping in 5G system

Abstract

The present application belongs to the technical field of wireless communication, and in particular relates to a secure transmission method against active eavesdropping in a 5G system. An existing anti-active physical layer security transmission technology based on orthogonal parameter authentication does not perform well against power suppression attack schemes with full space coverage. The present application provides a multi-stream MIMO anti-active eavesdropping secure transmission method based on coupling parameter authentication. The method includes the following steps: initiated by a legal receiving node, and encrypting and distributing the coupling of security parameters; authenticating the coupling characteristic parameters, so that the source node recovers the security parameters; and initiating by the source node, encrypting data transmission with security parameters; The recovery of data is completed by the legitimate receiving node. The eavesdropping bit error rate of the coupling encryption scheme used is higher than that of the orthogonal encryption, and the anti-eavesdropping effect is better.

Description

technical field [0001] The present application belongs to the technical field of wireless communication, and in particular relates to a secure transmission method against active eavesdropping in a 5G system. Background technique [0002] Due to the characteristics of open space, time-varying topology, and broadcasting characteristics of wireless communication systems, the communication is easy to be eavesdropped. The traditional cryptography encryption method that relies on computational complexity is facing elimination due to the continuous improvement of computer computing power. The physical layer security communication technology does not depend on computational complexity. At the same time, the computational overhead is small and the delay is short. Advantage. [0003] Traditional physical layer security transmission schemes are generally designed for passive eavesdropping. However, when the upper layer key is leaked, eavesdroppers can eavesdrop without being discovere...

AI Technical Summary

Problems solved by technology

[0003] Traditional physical layer security transmission schemes are generally designed for passive eavesdropping. However, when the upper layer key is leaked, eavesdroppers can eavesdrop without being discovered by legitimate users.

In addition, many secure transmission schemes are based on multi-carrier modulation systems. Multi-carrier systems have certain defects: high precision requirements for channel state information (CSI), susceptible to frequency deviation, and high peak-to-average power ratio (Peak to Average Power Ratio). Power Ratio, PAPR)

[0004] However, the existing anti-active eavesdropping physical layer security transmission technology based on orthogonal parameter authentication does not perform well in the power suppression attack scheme with full space coverage.

Images