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:
Jul. 24, 2012
Filed:
Dec. 28, 2006
Ki Young Kwak, Seongnam-si, KR;
Kang Min Lee, Yongin-Si, KR;
Ji Myung OH, Goyang-si, KR;
Yong Suk Hwang, Yongin-si, KR;
Ki Young Kwak, Seongnam-si, KR;
Kang Min Lee, Yongin-Si, KR;
Ji Myung Oh, Goyang-si, KR;
Yong Suk Hwang, Yongin-si, KR;
SeAH Networks Co., Ltd., Gangnam-gu, KR;
Abstract
Provided are an apparatus and method for measuring a carrier-to-interference and noise ratio (CINR) using a pilot symbol in a digital communication system, and more particularly, to an apparatus and method for measuring a CINR by estimating a data signal, noise, and an interference signal from a pilot symbol in a digital communication system using orthogonal frequency division multiplexing (OFDM)/orthogonal frequency division multiplexing access (OFDMA). The apparatus includes: a pilot symbol acquisition unit for acquiring the pilot symbol from a baseband frequency signal; a signal estimation unit for estimating a pilot signal and a data signal from the pilot symbol; a power calculation unit for calculating a power value of the estimated data signal and calculating a power value of a noise signal from a difference between the pilot symbol and an estimated pilot signal; and a CINR calculation unit for calculating a CINR on the basis of the power values of the data and noise signals. Thus, a pilot symbol is used for more easily and precisely measuring a CINR of a received signal, and scheduling of a base station and transmission power control of a terminal are performed on the basis of the measured CINR.