Which number format to use for baseband Wimax Modem implementation on an FPGA ?

FFT/IFFT is the most important module for OFDM based baseband Wimax Modem architecture. However, computational complexity of this module is larger compared to other blocks in an OFDM system. It is critically important for the realization of this module on an FPGA that is much faster than traditional processors. In this paper, computation of CORDIC algorithm which is essential for the implementation of FFT module on FPGA, implementation using floating point and signed magnitude is studied and their performance comparison is given.