A MVR-CORDIC Based High Speed 64 Point Radix-4 FFT Processor
Zongguang Yu · Electronics & Packaging · 2008
A 64 point radix-4 FFT processor is designed. And the complex multiplier in trditional FFT precessor is substituted by the modified vector rotation CORDIC,the MVR-CORDIC complete a complex multiply by just a few of shift-add operartion at the guarantee of SQNR performance,so it diminishes the time of a butterfly operation and diminishes the whole area. Two independent RAM are employed in this FFT precessor to process and store the temporary data by a Ping-Pang mode and save the memory access time to improve the FFT opration time. This FFT processor is verified by the FPGA,The results show that no more than 1 μ s is consumed in one 64-point FFT operation.