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Code hopping spread spectrum communication system based on chaos sequence

A chaotic sequence and spread spectrum communication technology, applied in the field of spread spectrum communication, can solve the problems that the security of traditional direct spread communication technology cannot be ignored, and achieve the effect of good correlation performance and good random characteristics

Inactive Publication Date: 2014-07-30
WUHAN UNIV
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Problems solved by technology

[0002] With the development of wireless communication blind detection technology, the security issues of traditional direct spread communication technology can no longer be ignored, and traditional direct spread has a near-far effect in anti-reconnaissance communication, and there is a contradiction between anti-interference ability, networking and number of users Difficult to take care of technical problems, so a new type of direct expansion system - code-hopping direct expansion system is proposed

Method used

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  • Code hopping spread spectrum communication system based on chaos sequence
  • Code hopping spread spectrum communication system based on chaos sequence
  • Code hopping spread spectrum communication system based on chaos sequence

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Embodiment Construction

[0037] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0038] please see figure 1 , the technical solution adopted in the present invention is: a code-hopping spread spectrum communication system based on chaotic sequences, which is composed of a transmitting end and a receiving end;

[0039] The transmitter generates a code-hopping pattern from a chaotic sequence, and the code-hopping pattern selects the corresponding spreading code in the spreading code set through the spreading code set table to spread the baseband data signal to be transmitted, and then modulates and sends it to the channel transmission;

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Abstract

The invention discloses a code hopping spread spectrum communication system based on a chaos sequence. According to the system, time-sharing multiplexing is carried out on data information and synchronization information; in each time slot, the synchronization information is transmitted first and then the data information is transmitted; a receiving end receives the synchronization information and analyzes the synchronization information to obtain a code hopping pattern and code element synchronization information needed for disspreading during transmission of the data information. Due to the fact that the chaos sequence which is better than a traditional direct spreading sequence in related performance and random performance is applied to a code hopping direct spreading system and serves as the code hopping pattern and a spreading code, the code hopping spread spectrum communication system has better anti-interference and anti-interception performance and has broad development prospects in the anti-reconnaissance communication field.

Description

technical field [0001] The invention belongs to the technical field of spread spectrum communication, in particular to a chaotic sequence-based code-hopping spread spectrum communication system. Background technique [0002] With the development of wireless communication blind detection technology, the security issues of traditional direct spread communication technology can no longer be ignored, and traditional direct spread has a far-near effect in anti-reconnaissance communication, and the contradiction between anti-jamming ability and network and the number of users Difficult to balance and other technical problems, so a new type of direct expansion system - code-hopping direct expansion is proposed. [0003] In recent years, the chaotic sequence has been introduced into the DS system with the advantages of sensitive initial value, good random characteristics, and good correlation characteristics, which further enhances the anti-reconnaissance capability of the DS system...

Claims

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Application Information

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IPC IPC(8): H04B1/707H04W12/02
Inventor 郑建生雷莉刘郑余启新
Owner WUHAN UNIV
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