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Artificial noise generation method based on maximizing the eavesdropping party's bit error rate

A technology of artificial noise and bit error rate, applied in the field of artificial noise generation, can solve the problem of unsatisfactory interference with eavesdropping parties, and achieve the effect of deteriorating performance and improving security

Active Publication Date: 2021-02-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] Aiming at the unsatisfactory interference degree of the traditional artificial noise system to the eavesdropping party, the present invention proposes an artificial noise generation method based on maximizing the bit error rate of the eavesdropping party

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  • Artificial noise generation method based on maximizing the eavesdropping party's bit error rate
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  • Artificial noise generation method based on maximizing the eavesdropping party's bit error rate

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Embodiment Construction

[0045] The technical solution of the present invention has been described in detail in the part of the content of the invention, and the practicability of the present invention will be illustrated below in conjunction with the accompanying drawings and simulation examples.

[0046] Such as figure 2 As shown, (a) and (b) respectively give N t = 4, N a = 3, N r = 4, N e =32, the GSM-MIMO system that adopts BPSK modulation to add traditional artificial noise is respectively 0.5 when the power distribution coefficient is 0.8, and the BER performance comparison of the artificial noise generation algorithm of the maximum eavesdropping party bit error rate that the present invention proposes. from figure 2(a) It can be seen that when the power distribution coefficient θ=0.5, that is, when the power allocated to the effective signal accounts for 0.5 of the total power, the method proposed by the present invention produces a gain of about 4dB at the legal receiver compared to the...

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Abstract

The invention belongs to the technical field of communication anti-jamming, and relates to an artificial noise generation method based on maximizing the bit error rate of an eavesdropping party. The invention proposes an artificial noise generation algorithm based on maximizing the bit error rate of an eavesdropping party in a GSM-MIMO system with artificial noise added. The algorithm seeks the best approximation solution of artificial noise by maximizing the generation criterion that the eavesdropping party that interferes with the GSM-MIMO system wants to demodulate the signal as artificial noise, and effectively realizes the The interference to the bit error rate performance of the eavesdropping party is eliminated. Compared with the traditional artificial noise system, it not only produces a certain performance gain on the legitimate receiver, but also greatly deteriorates the performance of the eavesdropper, which further improves the security of the system.

Description

technical field [0001] The invention belongs to the technical field of communication anti-jamming, and relates to an artificial noise generation method based on maximizing the bit error rate of an eavesdropping party. Background technique [0002] The basic principle of the MIMO system is to use multiple antennas for data transmission and reception on the transceiver equipment of the wireless communication transmission system, making space a resource that can improve system performance, and mining the degree of freedom of the transmission space Space parallel transmission channels are formed to achieve high communication capacity and spectrum utilization. Compared with the traditional SISO system, the MIMO system can bring additional diversity, multiplexing and beamforming gains by making full use of the spatial degrees of freedom. [0003] For the purpose of improving spectral efficiency, GSM is proposed as a new type of MIMO technology, which activates more than one trans...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/0456H04K3/00
Inventor 牛鸿雷霞肖悦
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA