宽带数字波形产生中的广义多相滤波  

Generalized Polyphase Filtering in Wideband Digital Waveform Generation

作　　者：吴兵[1] 张飞[1] 伍小保[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《雷达科学与技术》2016年第4期422-426,共5页Radar Science and Technology

摘　　要：提出了一种"广义多相滤波"的概念,将多相滤波推广至多相合成的阶数与内插比不一致的情形,使得设计者在构建宽带数字波形产生系统时可以按照实际情况进行速度与面积的平衡。从时域对广义多相滤波进行了推导,并给出了其具体实施步骤。基于广义多相滤波算法,构建了一个宽带数字波形产生系统,使用测试信号对该系统的功能进行了仿真,给出了广义多相滤波在实际硬件中所使用的资源。结果表明,该算法对宽带数字波形产生系统的研制有一定的实际意义。A concept of generalized polyphase filtering（GPF）which extends the polyphase filtering to the case that the order of the polyphase composing is not the same as the interpolation rate is presented in the paper.The GPF makes it feasible to balance the speed and the area as the practical situation in designing the system of wideband digital waveform generation.The authors deduce the GPF in time domain and the detailed approaches of the GPF are presented.The wideband digital waveform generation system based on the GPF is constructed.The system is simulated by using a testing signal and the resource usage of the GPF in a practical device is educed by the simulation.It is indicated that the GPF has some practical advantages in the developing of the wideband digital waveform generation system.

关 键 词：宽带数字波形产生 广义多相滤波 多相合成 内插 

分 类 号：TN957[电子电信—信号与信息处理]