(a)
(b)
(c)
(d)
Figure 16: Matlab and FPGA results of a 1024-point FFT and IFFT core tested with rectangular pulse input waveform. (a) Rectangular pulse waveform, (b) 1024-point FFT core output using Matlab, (c) 1024-point FFT core output using FPGA, and (d) 1024-point IFFT core output using FPGA.