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:
Jan. 15, 2013
Filed:
Jul. 31, 2007
Ippei Kanno, Kyoto, JP;
Ippei Kanno, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A reception device for receiving an OFDM signal whose level is maintained constant by performing an AGC control which adjusts an amplification gain by means of a discrete gain value includes an equalization section operable to execute an equalization process of detecting, respectively, distortions of a plurality of reference subcarriers regularly included in the OFDM signal on which the fast Fourier transform has been performed, and of estimating, by means of an interpolation using the detected distortions, a distortion of the OFDM signal, which distortion is caused by transmission path propagation so as to correct the estimated distortion of the OFDM signal, and the equalization section corrects, by using the AGC control signal, an estimated error of the distortion of the OFDM signal, which distortion is caused by a discrete amplification gain variation of the OFDM signal.