Invention Grant
US08019021B2 Carrier to interference and noise ratio (CINR) estimating method and device using preamble in orthogonal frequency division multiplexing (OFDM)
有权
载波对干扰和噪声比（CINR）估计方法和在正交频分复用（OFDM）中使用前导码的设备）
- Patent Title: Carrier to interference and noise ratio (CINR) estimating method and device using preamble in orthogonal frequency division multiplexing (OFDM)
- Patent Title (中): 载波对干扰和噪声比（CINR）估计方法和在正交频分复用（OFDM）中使用前导码的设备）
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Application No.: US12064115Application Date: 2006-08-18
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Publication No.: US08019021B2Publication Date: 2011-09-13
- Inventor: Yu-Ro Lee , Dong-Seung Kwon
- Applicant: Yu-Ro Lee , Dong-Seung Kwon
- Applicant Address: KR Suwon-si KR Daejeon KR Seongnam KR Seoul KR Seoul
- Assignee: Samsung Electronics Co., Ltd,Electronics and Telecommunications Research Institute,KT Corporation,SK Telecom Co., Ltd,Hanaro Telecom, Inc.
- Current Assignee: Samsung Electronics Co., Ltd,Electronics and Telecommunications Research Institute,KT Corporation,SK Telecom Co., Ltd,Hanaro Telecom, Inc.
- Current Assignee Address: KR Suwon-si KR Daejeon KR Seongnam KR Seoul KR Seoul
- Agency: Jefferson IP Law, LLP
- Priority: KR10-2005-0076383 20050819; KR10-2005-0106540 20051108
- International Application: PCT/KR2006/003258 WO 20060818
- International Announcement: WO2007/021159 WO 20070222
- Main IPC: H04L27/00
- IPC: H04L27/00
Abstract:
A device and a method for estimating a Carrier to Interference-plus-Noise Ratio (CINR) in an Orthogonal Frequency Division Multiplexing (OFDM) system are provided. The CINR estimating method includes receiving a preamble symbol and transmitting subcarrier transmitted from a base station, calculating an interference power and noise power using the preamble symbol and transmitting subcarrier, calculating a receive power used for the base station to transmit a preamble and data symbol, estimating a preamble CINR value using an interference power, a noise power, and a receive power, calculating the noise power from a subcarrier not transmitting a preamble, and calculating an average CINR of data subcarriers using the preamble CINR value and the noise power. Accordingly, a precise CINR can be estimated using a preamble when the preamble power is amplified in comparison with the data symbol power.
Public/Granted literature
- US20080240217A1 Cinr Estimating Method and Device Using Preamble in Ofdm Public/Granted day:2008-10-02
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