公开(公告)号：KR1020130046667A

公开(公告)日：2013-05-08

申请号：KR1020110111191

申请日：2011-10-28

Applicant: 목포대학교산학협력단

Inventor： 이성로 ,  박종인 ,  윤석호 ,  이정훈 ,  최명수 ,  송익호 ,  이연우 ,  모귀환 ,  박인수 ,  양후열

IPC: G01S19/14 ,  G01S19/39

Abstract: PURPOSE: A synchronization improvement method of a marine telematics Galileo satellite system is provided to solve a plurality of peak problems of AltBOC(alternative binary offset carrier) signals and CBOC(composite BOC) signals. CONSTITUTION: A unit pulse signal S0alt, S2alt, ···,S2k-1alt is defined to indicate an AltBOC(kn, n) signal subcarrier in a half period. A correlation function of the defined unit pulse signal and AltBOC(1.5n, n) signals are indicated as R0alt, R2alt, ···,R2k-1alt and by reuniting a sum total of the correlation functions according to an equation, the correlating function removing a peripheral peak. [Reference numerals] (AA) AltBOC subcarrier; (BB) Pseudo noise code chip time; (CC,DD,EE,FF) Time

Abstract translation: 目的：提供海洋远程信息伽利略卫星系统的同步改进方法，以解决AltBOC（替代二进制偏移载波）信号和CBOC（复合BOC）信号的多个峰值问题。 规定：单位脉冲信号S0alt，S2alt，...，S2k-1alt定义为在半周期内表示AltBOC（kn，n）信号副载波。 定义的单位脉冲信号和AltBOC（1.5n，n）信号的相关函数表示为R0alt，R2alt，...，R2k-1alt，并且通过根据等式重新统计相关函数的总和，相关函数 去除外围峰。 （附图标记）（AA）AltBOC副载波; （BB）伪噪声码芯片时间; （CC，DD，EE，FF）时间

公开(公告)号：KR1020120048362A

公开(公告)日：2012-05-15

申请号：KR1020100109960

申请日：2010-11-05

Applicant: 목포대학교산학협력단

Inventor： 이영윤 ,  윤석호 ,  최명수 ,  이성로 ,  박종인

IPC: H04J11/00

CPC classification number: H04L27/2695 ,  H04L25/0224 ,  H04L27/265

Abstract: PURPOSE: A method for estimating an integer frequency offset by using the correlation of adjacent pilots in an OFDM(Orthogonal Frequency Division Multiplexing) system is provided to estimate an integer frequency offset by using the correlation of adjacent pilots in a frequency domain. CONSTITUTION: Fast Fourier transform(201) changes a received signal into a frequency domain signal. A symbol acquisition unit(202) obtains one or more consecutive OFDM(Orthogonal Frequency Division Multiplexing) symbols through a signal passing the fast Fourier transform. A plurality of received signal moving units(203) obtains a second frequency band by transferring a first frequency band of the OFDM symbol which is obtained according to a plurality of integer frequency offset candidate values. A template generating unit generates a template to maximize the correlation value between samples. A plurality of correlation units(205) calculates the correlation value between a sample and the template in the most adjacent pilot index. An integer frequency offset estimating unit(206) finally determines an integer frequency offset.

Abstract translation: 目的：提供一种通过使用OFDM（正交频分复用）系统中的相邻导频的相关性来估计整数频率偏移的方法，以通过使用频域中的相邻导频的相关来估计整数频率偏移。 构成：快速傅里叶变换（201）将接收的信号改变为频域信号。 符号获取单元（202）通过快速傅里叶变换的信号获得一个或多个连续的OFDM（正交频分复用）符号。 多个接收信号移动单元（203）通过传送根据多个整数频率偏移候选值获得的OFDM符号的第一频带来获得第二频带。 模板生成单元生成模板以最大化样本之间的相关值。 多个相关单元（205）计算样本与最邻近导频索引中的模板之间的相关值。 整数频率偏移估计单元（206）最终确定整数频率偏移。