宽带数字下变频的采样率变换模块的FPGA实现  

Implementation of Sampling Rate Conversion for Wideband Digital Down Conversion Based on FPGA

作　　者：董政[1] 葛临东[1] 巩克现[1] 

机构地区：[1]信息工程大学信息工程学院,河南郑州450002

出　　处：《电视技术》2009年第5期45-47,共3页Video Engineering

基　　金：国防预研项目资助(6130320)

摘　　要：提出了一种改进的多相滤波方法,通过多相内插后的直接抽取,可完成宽带信号任意分数倍的采样率变换。经过分析,重采样造成的误差并不影响信号的质量。最后合理分配FPGA资源,在FPGA上实现了采样率变换模块。In this paper,a modified multiphase filtering algorithm based on direct decimation after multiphase interpolation is proposed,by which sampling rate conversion with arbitrary fraction for wideband signals can be implemented successfully.Analysis results show that the resampling error does not affect the signal quality.Finally,an FPGA-based design including resource distribution is provided,and the feasibility of this design is proved by the test targeting at real signals.

关 键 词：宽带 数字下变频 采样率变换 现场可编程门阵列 

分 类 号：TN911[电子电信—通信与信息系统]