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Full duplex cognitive multiple-input-multiple-output relay cooperation method in non-ideal channel state

A channel state, full-duplex technology, applied in transmission monitoring, transmission system, interference to communication, etc., can solve problems such as high risk of eavesdropping and poor security performance

Pending Publication Date: 2020-10-20
ZUNYI MEDICAL UNIVERSITY
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Problems solved by technology

[0005] Technical problem: In view of the existing problems of poor security performance and high risk of eavesdropping during the transmission process of the physical layer of the full-duplex cognitive eavesdropping network under the non-ideal channel state, the present invention provides a full-duplex cognitive wiretapping network under the non-ideal channel state. An artificial cognitive multi-input multi-output relay cooperation method, which can effectively improve the security transmission performance of the physical layer and reduce the risk of eavesdropping

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  • Full duplex cognitive multiple-input-multiple-output relay cooperation method in non-ideal channel state
  • Full duplex cognitive multiple-input-multiple-output relay cooperation method in non-ideal channel state
  • Full duplex cognitive multiple-input-multiple-output relay cooperation method in non-ideal channel state

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Embodiment Construction

[0060] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0061] The system model aimed at by the full-duplex cognitive MIMO relay cooperation method in the non-ideal channel state of the present invention is a full-duplex cognitive wiretapping system under the full-duplex working mode of the secondary user destination node, such as figure 1 As shown, the system includes a secondary user transmitter (Alice), a secondary user relay node (Relay), a full-duplex destination node (Bob), an eavesdropping user (Eve) and a primary user (PU), where the secondary user transmitter (Alice) Configure N A (N A >1) root antenna, secondary user relay node (Relay) configuration N R (N R >1) Antenna, full-duplex destination node (Bob) configuration NB (N B >1) One antenna, the eavesdropping user (Eve) and the primary user (PU) are both configured with at least one antenna, and in the embodiment of the present invention, the eaves...

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Abstract

The invention discloses a full duplex cognitive multiple-input-multiple-output relay cooperation method in a non-ideal channel state, and belongs to the technical field of multi-antenna full duplex wireless transmission. Firstly, according to a channel estimation model in a first time slot non-ideal channel state, a secondary user transmitter selects and configures an optimal antenna to send a signal to a secondary user relay node under a primary user interference temperature constraint condition, and a full duplex destination node transmits a directional interference signal to an eavesdropping user in a zero-forcing beamforming mode; then, according to a channel estimation model in a second time slot non-ideal channel state; and the secondary user relay node forwards data to the full-duplex destination node under the constraint condition of the interference temperature of the primary user, any LB antenna in the full-duplex destination node receives signals, and the remaining NB-LB antenna of the full-duplex destination node transmits artificial interference to an eavesdropping user. According to the method, the physical layer security transmission performance of the full duplex cognitive wiretapping network under the non-ideal channel is effectively improved, and the risk that the whole network system is wiretapped is reduced.

Description

technical field [0001] The invention belongs to the technical field of multi-antenna full-duplex wireless transmission, and in particular relates to a full-duplex cognitive multi-input multi-output relay cooperation method under a non-ideal channel state. Background technique [0002] In recent years, with the increasing shortage and waste of spectrum resources, cognitive radio technology has emerged. The emergence of cognitive radio can effectively alleviate the problem of spectrum resource shortage. Among them, the shared spectrum resource under the interference temperature constraint is mainly that the secondary users share the spectrum resource of the primary user without affecting the service quality of the primary user. Then, the frequent interaction of spectrum resources will inevitably lead to information security issues, and physical layer security technology, as an anti-eavesdropping transmission technology, has attracted the attention of scholars. [0003] In fac...

Claims

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Application Information

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IPC IPC(8): H04K3/00H04B7/0413H04B7/06H04B7/08H04B17/336H04B7/026
CPCH04K3/43H04B7/0413H04B7/0617H04B7/0857H04B17/336H04B7/026
Inventor 尚志会王晓华韦军罗旭杨敏潘桃桃
Owner ZUNYI MEDICAL UNIVERSITY
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