Abstract

PEDRO, Correa; PABLO, Lupera Morillo  and  RICARDO, Llugsi. Evaluation of Split-radix IFFT Algorithms in Hardware. Maskay [online]. 2018, vol.8, n.1, pp.13-19. ISSN 1390-6712.  https://doi.org/10.24133/maskay.v8i1.564.

The present work focuses on a hardware-based approach to experimentally identify the best performing algorithm for the calculation of the IFFT of an OFDM symbol of the ISDBT-b standard. In order to accomplish this goal symmetric and asymmetric Split-radix algorithms are described and their entire hardware implementation is developed. The results of the test incorporate other algorithms known as radix-2 lite, radix-2, radix-4 and pipelined. The comparative evaluation of the performance of the algorithms was performed considering the following parameters: Signal to Quantize Noise Ratio (SQNR), processing time and the amount of resources used of the Virtex-5 XUPV5-LX110T card. From the analysis it is obtained that the algorithm that presents the best performance depends on the parameter analyzed.

Keywords : IFFT; Split-radix IFFT algorithms.

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