公开(公告)号：KR100418975B1

公开(公告)日：2004-02-14

申请号：KR1020010032921

申请日：2001-06-12

Applicant: 전자부품연구원

Inventor： 유영환 ,  박철희 ,  백종호 ,  주민철 ,  조진웅 ,  김한종

IPC: H04L7/00

Abstract: PURPOSE: An apparatus and a method for an initial frequency synchronization of a digital audio broadcasting system are provided which can obtain an accurate synchronization as to a large frequency offset error using a differential detector of a phase reference symbol. CONSTITUTION: A differential detector part(30) performs a differential detection between the kth carrier and the (k-1)th carrier as to a received phase reference symbol. A correlation value calculation part(32) calculates a correlation value with an output signal of the differential detector part as shifting the differentially-detected phase reference symbol. And a frequency error estimation part(34) determines a circular shifting position having a maximum correlation value, and outputs an estimated integer-timed frequency error by determining the determined circular shifting position as a value corresponding to an integer-time of the frequency error.

Abstract translation: 目的：提供了一种用于数字音频广播系统的初始频率同步的装置和方法，其能够使用相位参考符号的差分检测器来获得关于大频率偏移误差的准确同步。 构成：差分检测器部分（30）对于接收到的相位参考符号执行第k个载波和第（k-1）个载波之间的差分检测。 相关值计算部分（32）计算与差分检测器部分的输出信号相关的值，以移动差分检测的相位参考符号。 并且频率误差估计部分（34）确定具有最大相关值的循环移位位置，并且通过将所确定的循环移位位置确定为与频率误差的整数时间相对应的值来输出估计的整数倍频率误差。

公开(公告)号：KR1020020094609A

公开(公告)日：2002-12-18

申请号：KR1020010032921

申请日：2001-06-12

Applicant: 전자부품연구원

Inventor： 유영환 ,  박철희 ,  백종호 ,  주민철 ,  조진웅 ,  김한종

IPC: H04L7/00

Abstract: PURPOSE: An apparatus and a method for an initial frequency synchronization of a digital audio broadcasting system are provided which can obtain an accurate synchronization as to a large frequency offset error using a differential detector of a phase reference symbol. CONSTITUTION: A differential detector part(30) performs a differential detection between the kth carrier and the (k-1)th carrier as to a received phase reference symbol. A correlation value calculation part(32) calculates a correlation value with an output signal of the differential detector part as shifting the differentially-detected phase reference symbol. And a frequency error estimation part(34) determines a circular shifting position having a maximum correlation value, and outputs an estimated integer-timed frequency error by determining the determined circular shifting position as a value corresponding to an integer-time of the frequency error.

Abstract translation: 目的：提供一种用于数字音频广播系统的初始频率同步的装置和方法，其可以使用相位参考符号的差分检测器获得关于大的频率偏移误差的精确同步。 构成：差分检测器部分（30）对接收的相位参考符号执行第k个载波和第（k-1）个载波之间的差分检测。 相关值计算部分（32）利用差分检测器部分的输出信号来计算与差分检测的相位参考符号相移的相关值。 并且频率误差估计部件（34）确定具有最大相关值的圆形移位位置，并且通过将确定的圆形移位位置确定为与频率误差的整数时间对应的值来输出估计的整数定时频率误差。