满足中国辐射掩蔽的UWB脉冲成形算法  

UWB pulse shaping algorithm satisfying China radiation masking

作　　者：纪元法[1,2] 杨政权 孙希延 JI Yuanfa;YANG Zhengquan;SUN Xiyan(School of Information and Communication,Guilin University of Electronic Technology,Guilin 541004,China;Guangxi Key Laboratory of Precision Navigation Technology and Application,Guilin 541004,China)

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004 [2]广西精密导航技术与应用重点实验室,广西桂林541004

出　　处：《现代电子技术》2018年第19期1-5,共5页Modern Electronics Technique

基　　金：国家自然科学基金(61362005);国家自然科学基金(61561016);国家自然科学基金(11603041);广西技术创新引导专项(桂科AC16380014);四川科技计划项目(17ZDYF1495);广西信息科学实验中心资助项目;桂林电子科技大学研究生教育创新计划资助项目(2018YJCX22)~~

摘　　要：针对目前缺乏满足中国辐射掩蔽标准的超宽带(UWB)脉冲设计方案的问题,提出一种基于修正Hermite多项式(MHP)功率谱频移组合的UWB脉冲成形算法。分析了MHP时频特性,选择其为UWB脉冲基函数;用高频正弦波实现基函数的功率谱频移,以满足中国辐射掩蔽标准为约束条件,采用随机数法选取权重系数进行线性组合形成脉冲;最后,通过迭代正弦波频率,对脉冲波形进行优化。Matlab仿真结果表明,该成形脉冲不仅满足中国辐射掩蔽,且在整个频段都有较好的频谱利用率,与用高斯函数迭代算法组合脉冲比较,抗多用户干扰性能更强。Since the current ultra-wideband(UWB)pulse design scheme can′t satisfy the China radiation masking standard,a UWB pulse shaping algorithm based on frequency-shift combination of power spectrum of modified Hermite polynomial(MHP)is proposed.The time and frequency characteristics of MHP are analyzed,and the MHP is chosen as the basis function of UWB pulse.The high-frequency sine wave is used to realize the frequency shift of frequency spectrum of the basis function,so as to satisfy the constraint condition of China radiation masking standard.The random number method is adopted to select the weight coefficient for the linear combination,so as to form the pulse waveform.The pulse waveform is further optimized by adjusting the iteration of sine wave frequency.The simulation results of Matlab show that the shaped pulse can not only satisfy China radiation masking,but also has high spectral efficiency in the whole frequency band,and has stronger capacity against multi-user interference in comparison with combination pulse shaped with Gaussian function iteration algorithm.

关 键 词：中国辐射掩蔽 超宽带 修正Hermite多项式 功率谱频移 随机数法 多用户干扰 

分 类 号：TN929.5-34[电子电信—通信与信息系统]