基于滑動(dòng)相關(guān)峰檢測(cè)的混沌碼同步法
doi: 10.11999/JEIT150620
基金項(xiàng)目:
國家自然科學(xué)基金(61202490),航空科學(xué)基金(20BZC15008)
Method of Chaos Code Synchronization Based on Sliding Correlation
Funds:
The National Natural Science Foundation of China (61202490), The Aeronautical Science Fund of China (20BZC15008)
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摘要: 混沌無線數(shù)字通信是未來高安全高保密無線通信的重要發(fā)展方向,而混沌碼同步是其核心技術(shù)之一。該文根據(jù)混沌無線通信特點(diǎn),提出一種基于滑動(dòng)相關(guān)峰檢測(cè)的混沌碼同步方法。針對(duì)非周期混沌碼同步,設(shè)計(jì)了在混沌碼同步3個(gè)約束條件下的相位延遲控制模塊,搭建了基于Logistic序列的同步系統(tǒng)動(dòng)態(tài)模型,并進(jìn)行了仿真。仿真結(jié)果表明,該方法可實(shí)現(xiàn)收發(fā)兩端混沌碼同步,同步速度快,抗噪能力強(qiáng),有效地解決了混沌無線數(shù)字通信中的同步方法問題。
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關(guān)鍵詞:
- 混沌無線數(shù)字通信 /
- 混沌碼同步 /
- 同步約束條件 /
- 滑動(dòng)相關(guān)
Abstract: Chaos wireless digital communication is an important development direction of high security wireless communication in the future. Chaos code synchronization is one core technology. According to characteristics of chaos wireless communication, a method of chaos code synchronization based on sliding correlation is put forward. For non-periodic chaos code synchronization, phase delay controller is designed under the condition of three constrain conditions. Taking logistic sequence for example, a dynamic model of chaos code synchronization system is built and the simulation is carried out. The test results show that this method can effectively realize chaos code synchronization between sender and receiver. Its synchronous rate is fast and anti-noise performance is good. It solves the synchronization problem in chaos wireless digital communication. -
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