Study of a CORDIC Based Radix-4 FFT Processor
In this paper, the authors focus on the study of FFT and IFFT of pipelined based radix-4 algorithm and to proceed this algorithm it uses a butterfly structure method. Due to the use of radix-4 instead of radix-2 technique, computation speed gets doubled. To proceed further, Butterfly structure i.e. BFI and BFII can be executed using the DFT algorithm. Twiddle Factor Multipliers (TFM) can be implemented using Co-Ordinate Rotation DIgital Computer (CORDIC) algorithm, there are other units like delay units and control units for them they use FSM based design.