Method and device for detecting eavesdropping pilot frequency in channel training process

Abstract

The invention discloses a method for detecting eavesdropping pilot frequency in a channel training process, which is characterized by comprising the following steps of: setting a communication protocol; transmitting and receiving pilot frequency according to the communication protocol; calculating a channel reverse estimation result according to the pilot frequency received by each time slot to obtain a channel reverse estimation result; and estimating a channel of a legal user, an uplink communication channel of an illegal user and a downlink communication channel of the illegal user according to the channel reverse estimation result.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and a device for detecting an eavesdropping pilot in a channel training process. Background technique [0002] As an emerging communication security technology, physical layer security uses the uniqueness and reciprocity of physical channels to encrypt information, generate passwords, and identify legitimate users. However, it is still in the initial research stage, and some key issues have not been properly resolved. One includes the vulnerability of communication channels to eavesdropping. [0003] Cooperative interference and coding technology increase the security of system communication to a certain extent, so that eavesdroppers cannot receive complete information, but this method is only theoretical research and cannot be applied in realistic and complex communication environments; other technologies are mostly aimed at MISO systems There is eavesdr...

AI Technical Summary

Problems solved by technology

[0002] As an emerging communication security technology, physical layer security uses the uniqueness and reciprocity of physical channels to encrypt information, generate passwords, and identify legitimate users. However, it is still in the initial research stage, and some key issues have not been properly resolved. one of which involves the vulnerability of communication channels to eavesdropping

[0003] Cooperative interference and coding technology increase the security of system communication to a certain extent, so that eavesdroppers cannot receive complete information, but this method is only theoretical research and cannot be applied in realistic and complex communication environments; other technologies are mostly aimed at MISO systems There is eavesdropping in the pilot uplink training process, and the MIMO system may have eavesdropping in the pilot uplink training process, pilot downlink training process, and pilot uplink and downlink training processes.

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