FFT/IFFT processing system employing a real-complex mapping...

Data processing: structural design – modeling – simulation – and em – Modeling by mathematical expression

Reexamination Certificate

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C703S013000, C370S210000

Reexamination Certificate

active

10973751

ABSTRACT:
The present invention provides an FFT/IFFT processor for use with N data values. In one embodiment, the FFT/IFFT processor includes an even-odd data mapper configured to provide a mapping of the N data values into N/2 mapped complex data values if the N data values are real. Additionally, the FFT/IFFT processor also includes a separator-combiner, coupled to the even-odd data mapper, configured to compute either an FFT based on the mapping or an IFFT based on the N data values if the N data values are complex.

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patent: 2005/0058059 (2005-03-01), Amer
“Implementation of a Programmable 64-2048-Point FFT/IFFT {rpcesspr fpr PFDM-Based Communications Systems”, Kuo et al, IEEE 0-7803-7761-3/03, IEEE 2003.
Smith, Winthrop W.; Handbook of Real-Time Fast Fourier Transforms; IEEE Press, 1995.
Singleton, Richard C.; Algor Procedures for the Fast Fourier Transform; Communications of the ACM; vol. 11, No. 11; Nov. 1968; pp. 773-776.

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