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:
Apr. 19, 2011
Filed:
Sep. 27, 2006
Jae-ho Jung, Daejeon, KR;
Byung-su Kang, Deajeon, KR;
Joon-hyung Kim, Daejeon, KR;
Heon-kook Kwon, Daejeon, KR;
Sung-jun Lee, Daejeon, KR;
Kwang-chun Lee, Daejeon, KR;
Jae-Ho Jung, Daejeon, KR;
Byung-Su Kang, Deajeon, KR;
Joon-Hyung Kim, Daejeon, KR;
Heon-Kook Kwon, Daejeon, KR;
Sung-Jun Lee, Daejeon, KR;
Kwang-Chun Lee, Daejeon, KR;
Electronics and Telecommunications Research Institute, Deajeon, KR;
Abstract
The present invention relates to a device for compensating a radio frequency distortion caused by a sample/hold operation of a digital/analog converter in an orthogonal frequency division multiplexing (OFDM) transmission system, and a method thereof. In a digital transmission system, an edge frequency signal of a transmission signal band is distorted by a sample/hold operation of a digital/analog converter such that a signal attenuation is generated at a frequency domain by a sync function having a zero point at a sample frequency of a transmission signal. In the present invention, the signal distortion may be compensated by multiplying a coefficient of an inverse sync function by a signal weight value at the frequency domain, and it may be compensated by using a single multiplier and a lookup table storing the coefficient of the inverse sync function.