| 一种差分跳频码发生器的构造方法 |
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| 引用本文： | 董彬虹,李少谦,史锋旗.一种差分跳频码发生器的构造方法[J].电子与信息学报,2010,32(4):816-820. |
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| 作者姓名： | 董彬虹 李少谦 史锋旗 |
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| 作者单位： | 电子科技大学通信抗干扰技术国家级重点实验室,成都,610054 |
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| 基金项目： | 国防重点实验室基金(9140C020103090C0201)资助课题 |
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| 摘 要： | 针对差分跳频中常规G函数生成的跳频图案的2维连续性不够理想，其频率转移关系容易被窃听者截获的问题，该文提出了一种用G函数结合序列构成差分跳频码发生器的解决方法，对常规G函数和差分跳频码发生器产生的差分跳频图案的2维连续性进行了检验和比较，并对二者构成的差分跳频通信系统在AWGN条件下的误符号性能进行了理论分析，同时做出相应的计算机仿真，证实了采用G函数结合序列的差分跳频码发生器的设计方法在不损失系统误符号率性能的条件下，提高了系统的安全性。
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| 关 键 词： | 差分跳频 G 函数 序列 安全性 |
| 收稿时间： | 2009-4-2 |
| 修稿时间： | 2009-10-9 |
A Differential Frequency Hopping Code Generator Construction Metho |
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| Dong Bin-hong,Li Shao-qian,Shi Feng-qi.A Differential Frequency Hopping Code Generator Construction Metho[J].Journal of Electronics & Information Technology,2010,32(4):816-820. |
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| Authors: | Dong Bin-hong Li Shao-qian Shi Feng-qi |
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| Affiliation: | National Key Laboratory of Communication, University of Electronic Science and Technology of China, Chengdu 610054, China |
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| Abstract: | An intelligent eavesdropper may easily intercept the frequency transition relations if a constant G function is used in Differential Frequency Hopping (DFH) system because of the poor 2-dimensional continuity of constant DFH sequence. To solve the problems, this paper puts forward a DFH code generator construction method which combines G function with PN sequence in a DFH system. The 2-Dimensional (2D) continuity performance of generated DFH patterns between constant G function and DFH code generator are tested and compared. The Symbol Error Rate (SER) performance in AWGN is analyzed in theory, and the corresponding simulation results are given. Theoretical analysis and simulation results show that the DFH code generator which combines G with PN sequence increases security of DFH system without decreasing the SER performance. |
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| Keywords: | Differential Frequency Hopping(DFH) G function" target="_blank">G function')">G function PN sequence Security |
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