基于DSP的多通道子带滤波器组设计  

Design of Multi-channel Subband Filter Banks Based on DSP

作　　者：孙亮 Sun Liang(Station 561,NRTA,Jiangxi 330000,China)

机构地区：[1]国家广播电视总局五六一台,江西330000

出　　处：《广播与电视技术》2023年第3期90-94,共5页Radio & TV Broadcast Engineering

摘　　要：针对中波DX发射机模拟信号处理中频率响应偏高的补偿问题,本文设计了多通道滤波器组,利用该滤波器组特性,实现对信号的多频段分组。针对发射机不同频段的频率响应特性可实现频响补偿。在MATLAB软件平台进行仿真实现滤波器组的设计,基于DSP实现程序的硬件实现。通过实测表明,该多通道滤波器组可以有效实现对不同频段信号的近似重建,进而为系统频响补偿提供基础。In order to solve the compensation problem of high frequency response in the analog signal processing of the medium wave DX transmitter,this paper designs a multi-channel filter bank,which takes advantage of the filter bank characteristics to realize the multi-band grouping of the signal.Frequency response compensation can be realized according to different frequency response characteristics transmitter.The simulation of the design of the filter bank is carried out on MATLAB software platform,and the hardware implementation of the program is realized based on DSP.Experiments show that the multi-channel filter bank can achieve approximate reconstruction of signals in different frequency bands effectively,thus providing the basis for the system frequency response compensation.

关 键 词：多通道 滤波器组 DSP 信号仿真 信号重建 

分 类 号：TN713[电子电信—电路与系统]