Physical layer security algorithm combining subcarrier grouping and exclusive-OR operation

A physical layer security, subcarrier technology, applied in security devices, shaping networks in transmitters/receivers, baseband systems, etc., can solve problems such as unfavorable security, algorithm parameter leakage, difficulty in guaranteeing, etc., to enhance information security. Ease of performance, computational processing, and the effect of increasing complexity
CN110856169APending Publication Date: 2020-02-28STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
Publication Date
2020-02-28

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Abstract

The invention belongs to the technical field of wireless communication physical layer security, particularly relates to a physical layer security algorithm combining subcarrier grouping and exclusive-OR operation, and is suitable for a multicarrier communication network combining OFDM technical characteristics. InanOFDM system, only the channel characteristics of two legal communication parties are utilized; the subcarriers isreorderedaccording to the channel quality difference among the subcarriers of the legal user; original bit data symbols are transmitted on the subcarriers with better channel quality; exclusive-OR processing is performed on the bit information symbols transmitted by the subcarriers with poor channel quality and the bit information symbols transmitted by the subcarriers with good channel quality, and then the processed symbols is transmitted; therefore, a legal user can correctly receive and recover the data information of each subcarrier according to the transmission protocol, an eavesdropper cannot correctly recover the data information of each subcarrier, the confidentiality requirement of a physical layer is met, the channel state information of the eavesdropper does not need to be obtained by the algorithm, and the channel quality of the legal user does not need to be superior to that of an eavesdropping channel.
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Description

technical field

[0001] The invention belongs to the technical field of wireless communication physical layer security, and in particular relates to a physical layer security algorithm combining subcarrier grouping and XOR operation, which is suitable for multi-carrier communication networks combined with OFDM technical characteristics. Background technique

[0002] With the development of information technology, 5G has become the focus of attention in the field of mobile communications at home and abroad. OFDM technology has become one of the key physical layer technologies in LTE and LTE-Advanced systems due to its technical advantages such as high spectrum utilization rate and strong anti-multipath fading ability, and will be more widely used in 5G systems. Due to the broadcasting and openness of wireless channel transmission, the uncertainty of user distribution, and the complexity of network structure, the problem of data security transmission in 5G mobile communication ...

Claims

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