关键词: 数字滤波分离, 滤波器组, DFT

Abstract:

Based on the background of the modern software wireless channeled theory and FPGA technology,this paper makes a study of the digital filter separation technology for communication signals.It is proposed that the function of the digital signal filtering separation be realized for the filterbank by a discrete Fourier transform (DFT).In the realization of DFT,the fast Fourier transform (FFT) is applied,Verilog HDL is used as a carrier and a modern FPGA tool——the ModelSim software is employed to realize the required DFT efficiently.Finally the test of DFT shows that it can realize the desired function.

Key words: digital filter separation;filterbank;DFT