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A method and system for rapid self-interference suppression in frequency domain of electromagnetic spectrum umbrella cover

A frequency-domain fast, self-interference technology, applied in the baseband system, transmission system, digital transmission system, etc., can solve the problems that there is no clear reference to the umbrella suppression architecture umbrella, lack of experimental support, etc., to achieve fast self-interference suppression Effect

Active Publication Date: 2021-10-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0003] Most of the existing research related to umbrella jamming focuses on jamming strategies or resource scheduling, and the existing literature does not explicitly mention the suppression architecture of umbrella jamming and the key technologies of umbrella jamming suppression
In addition, the umbrella cover interference suppression still lacks experimental support in practical systems

Method used

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  • A method and system for rapid self-interference suppression in frequency domain of electromagnetic spectrum umbrella cover
  • A method and system for rapid self-interference suppression in frequency domain of electromagnetic spectrum umbrella cover
  • A method and system for rapid self-interference suppression in frequency domain of electromagnetic spectrum umbrella cover

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Embodiment Construction

[0061] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings, but the scope of the invention is not limited to the following.

[0062] like figure 1 As shown, an electromagnetic spectrum umbrella hood frequency domain rapid self-interference suppression method, including the following steps:

[0063] S1. Communication transmitter in the umbrella hood produces communication signal X s (t) and launch;

[0064] S2. The umbrella interference machine generates self-interference signal X based on circulating umbrella cover interfering baseband sequence C (N) based on cycle L c (t), and transmit to a particular area, improve the electromagnetic wave interference strength of the region, and form an electromagnetic spectrum umbrella;

[0065] S3. The umbrella receiver performs pretreatment of the received signal R (t) to obtain a baseband signal;

[0066] S4. In the digital baseband, the baseband signal R (N) correspo...

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Abstract

The invention discloses a method and system for rapid self-interference suppression in the frequency domain of an electromagnetic spectrum umbrella cover. The method includes: S1. a communication transmitter generating and transmitting a communication signal; The baseband sequence generates the self-interference signal; S3. The umbrella receiver preprocesses the received signal to obtain the baseband signal; S4. The umbrella receiver performs frequency offset estimation and compensation on the baseband signal; S5. The umbrella receiver compensates the frequency offset After the L-point FFT transformation is performed on the received baseband signal, channel estimation and local reference self-interference signal compensation are performed in the frequency domain; S6. The umbrella receiver performs umbrella self-interference suppression in the frequency domain, and transforms back to Time domain; S7. The umbrella receiver demodulates the suppressed time domain signal, and restores the data sent by the communication transmitter. The invention uses the cyclic structure of the self-interference signal to perform channel estimation and compensation in the frequency domain, saves the step of time synchronization, and realizes the frequency domain rapid suppression of the umbrella cover self-interference.

Description

Technical field [0001] The present invention relates to an electromagnetic spectrum umbrella system, and more particularly to a rapid self-interference suppression method and system for electromagnetic spectrum umbrella band. Background technique [0002] The electronics war is the core of the electronic battlefield, using electromagnetic spectrum to protect the friendship platform, and implement an electronic attack on the enemy. In the area of ​​the electronic war, an electromagnetic wave interference device can be implemented, that is, a strong electromagnetic wave interference area is formed in the desired longitude, latitude, and altitude, blocking communication equipment in the umbrella, unauthorized user, At the same time, the normal communication of the authorized user equipment is guaranteed. For licensing users in the umbrella cover, simply add an umbrella interference elimination module on existing devices before decoding, do not have to redesign the communication sign...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04K3/00
CPCH04K3/825H04L25/03159
Inventor 郭文博赵宏志宋长庆胡福唐友喜
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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