The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 2012
Filed:
Jan. 25, 2010
Andrew Whyte, Edinburgh, GB;
Andrew Whyte, Edinburgh, GB;
Xilinx, Inc., San Jose, CA (US);
Abstract
An efficient circuit and method for performing radix-3 Discrete Fourier transform (DFT) of a 3*2size data frame are provided. The data frame is split and fast Fourier transform (FFT) processed as three sub-frames. Radix-3 operations are performed on the FFT processed sub-frames over a number of stages with time shared hardware to compute the DFT of the data-frame. FFT operations are performed on the second and third sub-frames to produce respective sub-transforms. Concurrently with FFT processing of the first sub-frame, butterfly operations are performed on the sub-transforms of the second and third sub-frames. Through the use of time-shared hardware and arranging FFT operations to correspond with radix-3 operations at various stages of processing, the DFT is performed with existing FFT processors while reducing resource requirements and/or reducing DFT transform time over the full-parallel radix-3 implementation.