Abstract: Reconfiguration is an essential part of Software Radio (SR) technology. In this SR context, the Fast Fourier Transform (FFT) operator is defined as a common operator for many classical telecommunications operations. The systems are designed with a new architecture for this operator that makes it a device intended to perform two different transforms. The first one is the Fast Fourier Transform (FFT) used for the operations in OFDM based communication. The second one is the Fermat Number Transform (FNT) used for the finite operations in the Galois Field (GF). This operator can be reconfigured to switch from an operator dedicated to compute the FFT to the FNT in the Galois Field.

Keywords: Software Rodio, FPGA, Reconfigurable operator, FFT,FNT.