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:
May. 27, 1997
Filed:
Nov. 03, 1995
Geert Verhenne, Desselgem, BE;
Peter Reusens, Laarne, BE;
Alcatel N.V., Rijswijk, NL;
Abstract
A Fast Fourier Transform (FFT) dedicated processor includes a scrambler SM scrambling a real input data sequence x(i) and thereby providing two scrambled data subsequences a(i) and b(i). A data generation circuit GC coupled to SM provides a complex data sequence y(i) whose real and imaginary parts equal the scrambled data subsequences a(i) and b(i) respectively. y(i) is applied to an arithmetic unit AU, which under the control of a control unit CoM, is successively converted to an arithmetic means AM, a data regeneration circuit RC and a combinatorial means CM. AM generates an intermediate Fast Fourier Transform series Y(i) of y(i). RC splits up Y(i) into Fast Fourier Transform series A(i) and B(i) of a(i) and b(i) respectively and CM executes a final traditional Fast Fourier Transform combinatorial step and produces the Fast Fourier Transform sequence X(i) of the real input data sequence x(i).