FFT design and implement based on late-model FPGA

In the design of FFT based on FPGA,in order to increase FFT processing speed,this paper brings forward a new method that use shift-register to store twiddle-factors,and validate on Stratix series FPGA of Altera company.Experimentation result indicates that this method can improve FFT processing speed of FFT observably than the method of store twiddle-factors with ROM generally,and can satisfy FFT real-time processing request better.