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A Novel Design of Reconfigurable Fourier Transform Operator Over C and GF(Ft) for Future Multi-standards SDR Equipments

Abstract : Reed Solomon (RS) encoding/decoding in frequency domain is of significant interest in many wireless systems because the Fast Fourier Transform (FFT) operator is already present, at least in Orthogonal Frequency Division Multiplexing (OFDM) based ones. This paper presents and analyses the role of FFT to perform RS encoding/decoding in frequency domain. After explicating performance comparison, we propose to use RS codes defined over GF(Ft) instead of RS codes over GF(2m). Based on this proposition we have developed a common Dual Mode FFT (DMFFT) operator able to operate over two different domains C and GF(Ft). Various implementation strategies for DMFFT operator have been discussed. We emphasize that this DMFFT operator is a strong candidate for common operators in future air interface standards. We also explain our approach for designing flexible multistandard radio systems. Finally we incorporate the DMFFT operator in our graph and solve optimization problem by a heuristic based on simulated annealing.
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https://hal-supelec.archives-ouvertes.fr/hal-00401435
Contributor : Myriam Andrieux <>
Submitted on : Friday, July 3, 2009 - 10:33:17 AM
Last modification on : Monday, October 5, 2020 - 9:50:04 AM

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Sufi Tabassum Gul, Ali Al Ghouwayel, Christophe Moy, Yves Louët. A Novel Design of Reconfigurable Fourier Transform Operator Over C and GF(Ft) for Future Multi-standards SDR Equipments. International journal of communication networks and distributed systems, Inderscience Publishers, 2010, 4 (4), pp.345-375. ⟨10.1504/IJCNDS.2010.033159⟩. ⟨hal-00401435⟩

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