公开(公告)号：KR101374378B1

公开(公告)日：2014-03-19

申请号：KR1020130007100

申请日：2013-01-22

Applicant: 한국항공대학교산학협력단

Inventor： 정윤호 ,  이은상 ,  장수현

IPC: H04L27/26 ,  H04L7/04

CPC classification number: H04L27/2671 ,  H04L27/2678

Abstract: The present invention relates to a time synchronization apparatus of an OFDM based system and a method thereof improved an existing algorithm in order to have great time synchronization on many channels with multiple paths due to special environment such as an airport. The present invention can provide performance of a satisfactory level in all of AeroMACS seven channel models, in order to obtain the time synchronization as a metric result with having more sensitive characteristics than a previous method by using the result of calculation obtained using the multiple correlators for providing the performance of the great acquisition time synchronization in the channel models therewith. [Reference numerals] (110) Linear interpolation unit; (120) Control unit; (131) Correlator 1; (132) Correlator 2; (133) Correlator 3; (134) Moving average unit; (140) Estimating unit

Abstract translation: 本发明涉及基于OFDM的系统的时间同步装置及其改进现有算法的方法，以便由于诸如机场之类的特殊环境而在具有多个路径的许多信道上具有很好的时间同步。 本发明可以提供所有AeroMACS七通道模型中令人满意的性能，以便通过使用使用多个相关器获得的计算结果来获得具有比先前方法更敏感的特性的度量结果的时间同步 提供与其通道模型中的巨大采集时间同步性能。 （附图标记）（110）线性插值单元; （120）控制单元; （131）相关器1; （132）相关器2; （133）相关器3; （134）移动平均单位; （140）估算单位