Design and simulation of digital channelized receivers in fractional Fourier domain

查看全文 作　　者：Pengfei [1]Tang;Bin [1]Yuan;Qinglong [1]Bao;Zengping [1]Chen

机构地区：[1]ATR Key Lab,School of Electronic Science and Engineering,National University of Defense Technology

出　　处：《Journal of Systems Engineering and Electronics》索引2013年第24卷第1期,共8页

基　　金：supported by the Program for New Century Excellent Talents in University(NCET-06-0921) 摘　　要：An approach is proposed to realize a digital channelized receiver in the fractional Fourier domain(FRFD) for signal intercept applications.The presented architecture can be considered as a generalization of that in the traditional Fourier domain.Since the linear frequency modulation(LFM) signal has a good energy concentration in the FRFD,by choosing an appropriate fractional Fourier transform(FRFT) order,the presented architecture can concentrate the broadband LFM signal into only one sub-channel and that will prevent it from crossing several sub-channels.Thus the performance of the signal detection and parameter estimation after the sub-channel output will be improved significantly. The computational complexity is reduced enormously due to the implementation of the polyphase filter bank decomposition,thus the proposed architecture can be realized as efficiently as in the Fourier domain.The related simulation results are presented to verify the validity of the theories and methods involved in this paper. 关键词：分数阶傅里叶变换信道化接收机傅立叶宽带线性调频信号仿真设计多相滤波器组体系结构

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Design and simulation of digital channelized receivers in fractional Fourier domain

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