【Abstract】This paper is FIR, the basic principles outlined. Direct type, Cascade, the first class of linear phase structure chart analysis. Using the window method, wavelet analysis, the frequency of sampling, Chebyshev method to design FIR digital filter. FIR DF analysis of the characteristics, According to wavelet approximation method using wavelet function over to approximate the ideal frequency of the filter characteristics, very easy to design a multi-band-pass filters and multi-band phase shifter.
MATLAB software FIR digital filter for the simulation.
FPGA to achieve FIR digital filter, the FIR digital filter module in the internal structure of the simulation. Through hardware description language is the use of FPGA devices for Digital System Design Process. TMS320C54 chip used to achieve application FIRs instructions for programming.