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基于FRFT的二维扩频通信方案

Design of two dimensional spread spectrum communication based on FRFT

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【Author】 LIU Shi1, LIU Rong2, ZHANG Jun2(1.Dept. of Electronics Engineering,Beijing Institute of Technology,Beijing 100081,China;2.Institute of China Electronic System Engineering,Beijing 100039,China )

【机构】北京理工大学电子工程系；中国电子系统工程研究所；中国电子系统工程研究所北京100081；北京100039；

【摘要】介绍了分数阶傅里叶变换的基本概念和原理,分析了线性调频信号在分数阶傅里叶变换中的特点,指出用分数阶傅里叶变换对线性调频信号进行检测和解调的理论依据,并在此基础上,提出了1种基于分数阶傅里叶变换的二维扩频通信方案。该方案的优点在于使通信系统的抗侦收和抗干扰能力更强,提高了战场的频谱使用率。更多还原

【Abstract】 The basic concepts and theories of fractional Fourier transform are introduced. The characteristics of linear frequency-modulated (LFM) signal in fractional Fourier transform are analyzed and its theory foundation for detection and demodulation is also presented. On this basis,a design of the two dimensional spread spectrum communication is put forward. The theoretical analysis result shows its advantages such as anti-interception,anti-interference and improvement of battlefield spectrum usage.更多还原

【关键词】分数阶傅里叶变换；线性调频；二维扩频；抗干扰；
【Key words】 fractional Fourier transform(FRFT)； linear frequency-modulated(LFM)； two-dimensional spread spectrum； anti-interference；

【文献出处】无线电通信技术 ,Radio Communications Technology , 编辑部邮箱 ,2006年04期

【分类号】TN914.42
【被引频次】3
【下载频次】136

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