The invention discloses a high-efficiency
floating point FFT hardware accelerator design method based on mixed base operation. The method comprises the following steps of carrying out
floating point FFT
hardware acceleration operation through a mixed base operation FFT
algorithm, configuring different butterfly operation units to execute different butterfly operations according to the point numberof FFT, and obtaining a
cascade type pipeline FFT hardware accelerator architecture design result; optimizing the number of
floating point adders for butterfly operation through a
hybrid-base butterfly operation unit addition operator scheduling method, completing the implementation of optimized butterfly operation hardware, and obtaining a
hybrid-base butterfly operation unit design result; andadopting the data caching unit to the design of a data caching unit scheduled by an addition operator of the
hybrid butterfly operation unit, so that data caching among all stages of butterfly operations of the pipeline FFT hardware accelerator is realized, and a design result of an intermediate data caching unit is obtained. The method has the advantages of being high in calculation precision anddynamic range, fast in
processing speed, lower in hardware cost and
power consumption, flexible in configuration and the like.