Modulation apparatus using mixed-radix fast fourier transform
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United States of America Patent
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Jan 16, 2007
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app pub date -
Jun 27, 2003
filing date -
Jun 27, 2002
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Abstract
An FFT (Fast Fourier Transform) processor is disclosed which is a core block of an OFDM (Orthogonal Frequency Division Multiplexing) or DMT (Discrete Multi-tone) MODEM. The FFT processor simultaneously performs sequential input and output by applying an in-place algorithm for a mixed-radix multi-bank memory, thereby realizing continuous processing with only a 2N-word memory having 4 banks. The FFT processor minimizes its complexity while satisfying a high-speed calculation requirement.
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