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1 Lebanese International University LIU - Lebanese International University 2 IETR - Institut d-Electronique et de Télécommunications de Rennes

Abstract : A scenario to design a Triple Mode FFT is addressed. Based on a Dual Mode FFT structure, we present a methodology to reach a triple mode FFT operator TMFFT able to operate over three different fields: complex number domain C, Galois Fields GFFt and GF2m. We propose a reconfigurable Triple mode Multiplier that constitutes the core of the Butterflybased FFT. A scalable and flexible unit for the polynomial reduction needed in the GF2m multiplication is also proposed. An FPGA implementation of the proposed multiplier is given and the measures show a gain of 18%in terms of performance-to-cost ratio compared to a -Velcro- approach where two self-contained operators are implemented separately.

Keywords : Parametrization FFT Galois Fields software radio





Autor: Ali Al Ghouwayel - Amin Haj-Ali - Zouhair El-Bazzal - Yves Louët -

Fuente: https://hal.archives-ouvertes.fr/



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