Efficient implementation of large size FFT

Details Efficient implementation of large size FFT Efficient implementation of large size FFT

2007-10-09

2007-10-09

Qureshi, Afsar (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Fourier transform

C370S344000, C370S488000, C370S497000

Reexamination Certificate

active

09942628

ABSTRACT:
A system and method of implementing a Fast Fourier Transform (FFT) function in a high data rate communication network. The communication network, employing technology such as VDSL and DMT or FDM, frequently implements a FFT at a transmitter to transfer frequency domain modulated signals into time domain signals. An IFFT is implemented at the receiver to obtain the original signal. The present system divides the channel bandwidth into sub-bands and performs the FFT function with multiple FFTs in order to reduce chip size and computation time.

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