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, 2008
Filed:
Nov. 08, 2002
Applicants:
Ki-ho Jung, Seoul, KR;
Heung-gyoon Ryu, Chongju-shi, KR;
In-bae Kim, Chonan-shi, KR;
Byoung-il Jin, Chonan-shi, KR;
Inventors:
Ki-Ho Jung, Seoul, KR;
Heung-Gyoon Ryu, Chongju-shi, KR;
In-Bae Kim, Chonan-shi, KR;
Byoung-Il Jin, Chonan-shi, KR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 25/49 (2006.01); H04L 25/03 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is an apparatus and method for reducing a peak-to-average power ratio (PAPR) due to multiple subcarriers in an OFDM (Orthogonal Frequency Division Multiplexing) mobile communication system. In the OFDM mobile communication system, a transmitter pre-emphasizes an output signal of an IFFT (Inverse Fast Fourier Transform) block, and a receiver de-emphasizes a received signal before FFT (Fast Fourier Transform), thereby efficiently reducing PAPR due to multiple subcarriers.