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:
Nov. 27, 2007
Filed:
Oct. 15, 2003
Jun-woo Kim, Daejeon, KR;
Young-ha Lee, Daejeon, KR;
Chang-wahn Yu, Daejeon, KR;
Dae-ho Kim, Daejeon, KR;
Youn-ok Park, Daejeon, KR;
Jun-Woo Kim, Daejeon, KR;
Young-Ha Lee, Daejeon, KR;
Chang-Wahn Yu, Daejeon, KR;
Dae-Ho Kim, Daejeon, KR;
Youn-Ok Park, Daejeon, KR;
Abstract
Disclosed is an AGC (automatic gain control) device and method of an OFDM system with a DC offset compensation function, and a recording medium storing a program including the method. The AGC device calculates an energy of input signals with DC offsets as the summation of the square of the input signals, and calculates an energy of the DC offsets in the input signals as the summation of the square of the DC offsets. Pure signal energy without DC offsets is produced by subtracting the energy of the DC offsets from the energy of the calculated input signal. The energy and an AGC reference value are then compared, and feedback of a comparison result is performed.