Frequency-hopping transmission system based on double-pattern fast synchronization method

A transmission system and double-pattern technology, applied in the transmission system, electrical components, etc., can solve problems such as poor adjustability of system parameters, insufficient configuration, influence on synchronization establishment time or system anti-interception, etc., to achieve flexible system parameters Variable, improve confidentiality, reduce the effect of frequency band interference

Inactive Publication Date: 2014-11-19
BEIJING UNIV OF CHEM TECH
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Problems solved by technology

[0003] The commonly used frequency hopping transmission system uses a single frequency hopping pattern for synchronization establishment and data communication, w

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  • Frequency-hopping transmission system based on double-pattern fast synchronization method
  • Frequency-hopping transmission system based on double-pattern fast synchronization method
  • Frequency-hopping transmission system based on double-pattern fast synchronization method

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[0026] The implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0027] The system of the present invention can realize wireless data transmission in one-to-one point-to-point mode and many-to-many networking mode, and the basic principle block diagram of the system is figure 1 , the system includes a sending end and a receiving end, and the switching of the receiving link and the sending link is realized through a radio frequency switch, and the working mode is half-duplex mode. At the sending end, the system synchronously controls the frequency hopping pattern to output different frequency hopping sequences at different times to control the frequency synthesizer to generate different frequencies, and the user data and the carrier frequency are signal modulated, filtered, and then sent out by the antenna after power amplification; the receiving end , the system synchronously controls the frequency hopping patt...

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Abstract

The invention relates to a frequency-hopping transmission system based on a double-pattern fast synchronization method. The system can quickly and stable establish synchronization, initial synchronization is established quickly through a short period frequency-hopping pattern, and stable synchronization is kept through a long period frequency-hopping pattern. The system performs data processing through a base band module formed by a programmable logic device, i.e., packaging and depackaging of protocol frames, frequency-hopping pattern generation, system synchronization and system multi-parameter configuration, etc.; radio frequency characteristic processing is completed through software configuration of a radio frequency integrated chip, i.e., up/down-conversion, modulation and demodulation, low noise amplification and power amplification, etc.; system working parameters can be realized by configuring a base ban module and a radio frequency system according to application requirements; and a system working mode can be set as a fixed frequency or frequency hopping communication system according to communication requirements, convenient and flexible configuration can be performed through an upper computer interface. The double-pattern fast synchronization method enhances anti-interference performance of the system, shortens synchronization establishing time, and is good in confidentiality and strong in anti-interference capability and anti-interception capability.

Description

technical field [0001] The invention relates to a wireless data transmission system for frequency hopping communication, which belongs to the field of wireless communication. The system involves frequency hopping communication technology, frequency hopping pattern and synchronization technology. For a frequency hopping transmission system, its hopping rules are extremely difficult to be detected. Therefore, it can be used for confidential data transmission, the system is easy to expand, and the configuration is flexible. Background technique [0002] The traditional wireless data transmission system only communicates on a single frequency, and when the frequency is greatly interfered, the communication interruption phenomenon is very easy to occur; in addition, a single frequency is also very easy to be intercepted and tracked by the enemy, resulting in information leakage. The frequency in the frequency hopping communication system hops randomly according to the law of the ...

Claims

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Application Information

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IPC IPC(8): H04B1/7156
Inventor 何苏勤王小庆韩宇南吕咸亮王凌枫翟绪经
Owner BEIJING UNIV OF CHEM TECH
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