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:
Jul. 12, 2011
Filed:
Dec. 20, 2006
Yoshio Wada, Yokohama, JP;
Yoshio Wada, Yokohama, JP;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A circuit for a fast Fourier transform (FFT) operation is provided. The FFT operation circuit includes a plurality of butterfly operation units connected in series. Each of the plurality of butterfly operation units reads a signal in the order in which the plurality of butterfly operation units perform complex multiplication, addition, and subtraction, performs complex multiplication of each sequentially read signal by a complex coefficient corresponding to an FFT length and the stage number of the butterfly operation unit, and performs complex addition and subtraction with the complex multiplied signal. In this way, without disposing a plurality of operation circuits corresponding to a radix, FFT operations corresponding to a plurality of FFT lengths can be performed.