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. 31, 2012
Filed:
Oct. 06, 2005
Yuta Seki, Kanagawa, JP;
Yasuhiro Hasegawa, Miyagi, JP;
Shinji Ueda, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A multi-carrier transmission device improves peak suppression efficiency in a multi-carrier signal. The multi-carrier transmission device () has a peak suppression unit () for dividing a multi-carrier signal into two parts: a first multi-carrier signal and a second multi-carrier signal. A peak signal detection unit () detects a power value at a predetermined interval concerning the first multi-carrier signal. When the detected power value is equal to or above a predetermined level, a peak extraction unit () extracts a signal component equal to or above the predetermined level from the first multi-carrier signal. A band limit filter unit () passes only a predetermined band from the extracted signal component. An adder () subtracts the signal component after the band limit from the second multi-carrier signal. A multiplier () is arranged at a latter stage of the band limit filter unit () and multiplies a weight for compensating the power loss in the band limit filter unit () and the first multi-carrier signal.