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A Security Guarantee Method Based on Limited Feedback Non-orthogonal Multiple Access Network

A non-orthogonal multiple access and security assurance technology, applied in the field of security assurance based on limited feedback non-orthogonal multiple access networks, can solve the problems of increasing feedback overhead, reducing information transmission time, and difficulty in obtaining CSI in NOMA networks, achieving Reduced feedback overhead, small method overhead, easy-to-implement effects

Active Publication Date: 2021-11-02
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the perfect CSI of legal channels in the above work will increase the feedback overhead, especially when the number of users is large
Moreover, in practical applications, it is difficult for NOMA networks to obtain perfect CSI, and it takes longer to transmit perfect CSI than limited CSI, which will reduce the transmission time of information

Method used

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  • A Security Guarantee Method Based on Limited Feedback Non-orthogonal Multiple Access Network
  • A Security Guarantee Method Based on Limited Feedback Non-orthogonal Multiple Access Network
  • A Security Guarantee Method Based on Limited Feedback Non-orthogonal Multiple Access Network

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Embodiment Construction

[0051] see figure 1 , the present invention provides a security guarantee method based on limited feedback non-orthogonal multiple access network, the transmitter adopts NOMA technology to broadcast information to multiple receivers. To reduce the feedback overhead, each receiver estimates its CSI and feeds back the quantized CSI to the transmitter. For limited feedback, the secrecy rate of each NOMA receiver is first studied, and then the transmit power is optimally allocated to maximize the minimum secrecy rate of the NOMA receiver. In addition, the confidentiality interruption probability and the transmission interruption probability are analyzed, and their closed expressions are given. Analyze the trade-offs between security and reliability. Numerical results verify the analytical results and prove that the proposed scheme maintains a high level of secrecy while reducing overhead.

[0052] A security guarantee method based on a limited feedback non-orthogonal multiple a...

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Abstract

The invention discloses a security guarantee method based on limited feedback non-orthogonal multiple access network. i Broadcast information, i=1,2...K, K is the number of receivers, the eavesdropping end Eve eavesdrops on the information; the receiving end Bob i After receiving the signal, each receiver Bob i Using continuous interference cancellation technology to decode its own information to obtain the receiver Bob i The safe transmission rate of , estimate the CSI, and feed back the quantized CSI to the sending end Alice, and return the receiving end Bob i The safe transmission rate of , realizes the safe transmission of limited feedback.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a safety guarantee method based on a limited feedback non-orthogonal multiple access network. Background technique [0002] Non-orthogonal multiple access (NOMA) greatly alleviates the spectrum shortage situation by providing transmission of the same spectrum to multiple users. In the NOMA network, the transmitter broadcasts multiple signals to different receivers through power superposition technology, which makes NOMA users vulnerable to malicious eavesdropping. In addition, if eavesdroppers pretend to be NOMA users to share the same channel, the security performance of the NOMA network may be worse. Due to the complexity of upper-layer encryption methods and the difficulty of key generation and sharing, especially for scenarios with a large number of users, physical layer security uses the inherent randomness of wireless channels to protect private ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/03H04W12/037H04L1/00
CPCH04L1/0026H04W12/03H04W12/037
Inventor 王大伟张若南梁微翟道森唐晓胡晓宇吴珂婷
Owner NORTHWESTERN POLYTECHNICAL UNIV