HDL Coder  OFDM Receiver with 512-Point Serial FFT  This example
shows how to use HDL Coder™ to check, generate, and verify HDL
code for a 512-point complex serial FFT block built using the
MATLAB Function blocks and Simulink® blocks.   This model
implements a simple OFDM transmitter and receiver. The OFDM
receiver part contains a 512-point Radix-2 complex FFT to
convert signal back to the frequency domain. There are two FFT
implementations in this model:    • The Behavioral FFT block is
the complex FFT block in DSP System Toolbox™ library. It
calculates a 512-point vector input each sample and works at a
sample rate of 512.    • The FFT_512Pt_EML_Serial block
implements a serialized, streaming I/O FFT block using the
MATLAB Function blocks and Simulink blocks and is suitable for
hardware. This implementation accepts streaming complex input
data and generates streaming complex results continuously after
the initial pipelining latency.  The results of the two FFT
implementations are shown to be equal after mat