基于频率采样的超宽带脉冲信号设计方法  

Frequency sampling-based method to design UWB pulse shapes

作　　者：庄陵[1,2] 仇国庆[3] 唐贤伦[3] 曹长修[1] 

机构地区：[1]重庆大学自动化学院,重庆400044 [2]重庆邮电大学通信与信息工程学院,重庆400065 [3]重庆邮电大学自动化学院,重庆400065

出　　处：《华中科技大学学报（自然科学版）》2009年第1期104-107,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60506055)

摘　　要：提出一种新的超宽带脉冲波形的设计方法,通过在频率域进行多点采样,将超宽带信号设计成适合多址接入的ns级极窄脉冲,同时符合FCC频谱模板对功率的限制.能充分利用频谱模板,并给出脉冲波形具体数学解析式,修改频域采样点数目及幅度值参数能够进一步提高频谱利用率.减少了与其他无线窄带系统的相互干扰,提高了UWB通信系统的性能.方法灵活有效,适用于不同的频谱模板.在理论分析的基础上对方法进行了仿真,仿真结果验证了该方法的有效性.A novel algorithm is proposed to design pulse shapes for ultra-wideband communication systems. By frequency sampling, pulses can be designed that not only have a short-time duration for multiple access, but also meet the power spectral constraint of federal communications commission （FCC） ultra-wideband （UWB） mask. Compared with previously designed pulses, the novel pulses provide the same multiple access performance yet have advantages over them in terms of power spectrum utilization and spectral emission constraints. The design algorithm provides a flexible and effective method for designing suitable pulses for ultra-wideband communication applications. The simulation results show that this method was effective.

关 键 词：超宽带脉冲无线电 频率采样 功率谱密度 频谱模板 设计方法 仿真 

分 类 号：TN914.3[电子电信—通信与信息系统]