Realization method of fast frequency hopping communication

A technology of frequency hopping communication and its implementation method, which is applied in transmission systems, electrical components, etc., and can solve the problems of frequency hopping communication being concealed and difficult to be captured

Inactive Publication Date: 2012-08-29
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Compared with fixed frequency communication, frequency hopping communication is more subtle and difficult to be captured

Method used

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  • Realization method of fast frequency hopping communication
  • Realization method of fast frequency hopping communication
  • Realization method of fast frequency hopping communication

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Embodiment Construction

[0035] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

[0036] refer to figure 1 , figure 2 , the communication process between the host and the slave is as described in the previous steps 1.1~1.6. The communication process includes handshake communication, synchronization, encoding and decoding, and data transmission in the process of fast frequency hopping. At the beginning of communication, the master and the slave test the channel through the channel synchronization header frame. After the channel is normal, the time is synchronized through the time synchronization header frame, and then data communication is carried out. At the same time, the frequency dwell counter and the frequency change counter start counting. When the frequency change counter counts to M, the data communication is suspended, and the master and the slave perform clock verification. If the verification is unsuccessful, the channel...

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Abstract

The invention relates to a realization method of fast frequency hopping communication. The method is based on the frame synchronization technology, synchronization information is contained in protocol frames, the confirmation is carried for three times to ensure that the normal and stable synchronization is built between a host machine and a sub machine, and further, the synchronization information enters the fast frequency hopping communication process. Two kinds of frames: protocol frames and data frames are used in the communication process. In the synchronization building and frequency hopping communication processes, the protocol frames and the data frames are respectively subjected to interweaving coding with higher error correcting and checking capability and Reed-Solomon (RS) coding (Reed-Solomon is a code invented by IrvingStoyReed and GustaveSolomon who are American mathematicians and engineers), the transmission reliability is ensured, and the anti-interference capability is improved. During the frequency hopping communication, chaos sequences generated based on logistic mapping (a logic mapping provided by PierreFran oisVerhulst) are adopted as frequency hopping patterns, so the randomness of the frequency hopping frequency is enhanced, and the anti-interference performance and the detection resistance performance of a frequency hopping radio station are improved.

Description

technical field [0001] The invention relates to a method for realizing fast frequency hopping communication. Frequency hopping communication technology is a kind of spread spectrum communication technology, which belongs to the field of wireless communication. The frequency hopping communication system has a strong anti-jamming ability, and has been widely used in military wireless communication and civilian mobile communication. Background technique [0002] In the process of frequency hopping communication, the carrier frequency of the signal transmitted by the transmitting and receiving parties changes according to a predetermined rule. From the perspective of the implementation of communication technology, frequency hopping is a communication method that uses code sequences to perform multi-frequency frequency shift keying, and is also a communication system that uses code-controlled carrier frequency hopping. [0003] Compared with fixed frequency communication, frequ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/713H04B1/7143H04B1/7156
Inventor 何苏勤李曜良乐磊张海庆宋天龙赵越
Owner BEIJING UNIV OF CHEM TECH
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