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. 08, 2004
Filed:
Nov. 17, 2000
Keiichi Kaneko, Atsugi, JP;
Katsumi Takaoka, Yokosuka, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
An apparatus for transmitting an orthogonal-multi-carrier signal includes a first device for subjecting an information signal to first inverse discrete Fourier transform to convert the information signal into an orthogonal-multi-carrier signal. The ortogonal-multi-carrier signal generated by the first device is outputted to a transmission line. The orthogonal-multi-carrier signal is received from the transmission line. The received orthogonal-multi-carrier signal is subjected to discrete Fourier transform to recover the information signal from the received orthogonal-multi-carrier signal. A second device contained in the first device operates for subjecting the information signal to M-point inverse discrete Fourier transform and thereby implementing a first stage of the first inverse discrete Fourier transform, and for generating a transform result signal representative of results of the M-point inverse discrete Fourier transform, where M denotes a predetermined natural number greater than 2. A third device contained in the first device operates for subjecting the transform result signal generated by the second device to N-point inverse discrete Fourier transform and thereby implementing a second stage of the first inverse discrete Fourier transform to generate the orthogonal-multi-carrier signal, wherein N denotes a predetermined natural number greater than twice M. The second stage follows the first stage.