公开(公告)号：KR100763598B1

公开(公告)日：2007-10-05

申请号：KR1020060096273

申请日：2006-09-29

Applicant: 한국전자통신연구원

Inventor： 김판수 ,  김태훈 ,  이인기 ,  장대익 ,  오덕길 ,  지오반니엠마누엘코라짜 ,  라파엘라페도네 ,  마르코빌란티

IPC: H04L7/00 ,  H04N7/015

CPC classification number: H04L7/042 ,  H04L27/2656 ,  H04L27/2675

Abstract: An apparatus and a method of frame synchronization using phase differential information in a DVB(Digital Video Broadcasting) transmission system are provided to improve the reliability of frame synchronization estimation by performing hard combining for pilot symbol streams in a hot start state. An apparatus of frame synchronization using phase differential information in a DVB transmission system includes a cold start detector(21), a first comparing unit(22), and an acquisition controlling unit(23). The cold start detector(21) calculates a correlation value(a first decision variable) for a received symbol data stream by using the phase differential information with all SOF(Start of Frame) symbol streams for frame synchronization in one SOF symbol period. The first comparing unit(22) compares the first decision variable with a first threshold value. The acquisition controlling unit(23) determines whether the initial frame synchronization is performed, and controls the cold start detector(21) to operate until the initial frame synchronization is performed.

Abstract translation: 提供了一种在DVB（数字视频广播）传输系统中使用相位差信息的帧同步的装置和方法，以通过在热启动状态下对导频符号流执行硬组合来提高帧同步估计的可靠性。 在DVB传输系统中使用相位差信息的帧同步装置包括冷启动检测器（21），第一比较单元（22）和采集控制单元（23）。 冷启动检测器（21）通过在一个SOF符号周期中使用具有用于帧同步的所有SOF（起始帧）符号流的相位差信息来计算接收符号数据流的相关值（第一判定变量）。 第一比较单元（22）将第一判定变量与第一阈值进行比较。 获取控制单元（23）确定是否执行初始帧同步，并且控制冷启动检测器（21）运行直到执行初始帧同步。