Abstract
In the modern communications field, the FIR Digital Filter is used from any practical applications for its good linear phase character, and it provide an important function in digital signal processing design. In practice, there is always a real-time and flexible requirement for signal processing. However, software and hardware techniques available for implementation are difficult to meet the demand for the two aspects in the same time.Along with the development of PLD device and EDA technology, more and more electrical engineers use FPGA to implement FIR Filter, as it not only meet the real-time requirement, but also has some flexibility.
This design uses MATLAB / Simulink / DSP Builder to design a FIR Digital Filter . Firstly according to the index of the filter, MATLAB /Toolboxes / Filter Design / Filter Design & Analysis Tool(FDATool) is used to design the filter . Then according to practical requirement derive and quantify the coefficient . Use the Simulink Library and the DSP Builder Library to establish design model and simulate in the Simulink.
Key words: FPGA，FIR low pass Filter , DSP Builder , Simulink