Application of CORDIC algorithm in sine & cosine function and its implementation on FPGA
Qin Zengpan · Computer Engineering and Applications Journal · 2013
Sine cosine function is used broadly in engineering.Ordinarily,lookup-table algorithm implements easily,but a large amount of memory units are necessary and the contradiction between accuracy and the mount of memory units is acute.Traditional CORDIC(Coordinate Rotation Digital Computer)algorithm can achieve higher accuracy with less memory units,but needs more hardware resource and has long output delay.A new architecture combined with lookup-table and CORDIC algorithm is proposed.The design,simulation and hardware testing based on FPGA of the improved algorithm have been completed which indicates that it can achieve higher accuracy and lower output delay with less hardware resource and few memory units.