公开(公告)号：US08005173B2

公开(公告)日：2011-08-23

申请号：US12124389

申请日：2008-05-21

Applicant: Elsayed Ahmed Elsayed ,  Nabil Yousef

Inventor： Elsayed Ahmed Elsayed ,  Nabil Yousef

IPC: H03D1/00 ,  H04L7/00

CPC classification number: H04L27/2675 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2659

Abstract: A method of estimating a coarse frequency offset of Digital Multimedia Broadcasting (DMB) transmission frames includes receiving the DMB transmission frames including a synchronization channel having a phase reference symbol, circularly shifting the phase reference symbol by applying a circular shift to the phase reference symbol, numerically correlating the circularly shifted phase reference symbol with a known correct phase reference symbol to obtain a highest peak and a side peaks of the numeric correlation, and computing a phase reference symbol angle based on a multiplication of the peak and a carrier spacing of the DMB transmission frames. The peak is determined when the circularly shifted phase reference symbol is equal to the known correct phase reference symbol. The peak and side peaks corresponding to the peak are operated in a range of a maximum value of the circular shift.

Abstract translation: 估计数字多媒体广播（DMB）传输帧的粗频偏移的方法包括：接收包括具有相位参考符号的同步信道的DMB传输帧，通过对相位参考符号进行循环移位来循环移位相位参考符号， 将循环相移参考符号与已知的正确相位参考符号数值相关以获得数值相关的最高峰值和侧峰值，并且基于DMB的峰值和载波间隔的乘法来计算相位参考符号角度 传输帧。 当循环相位参考符号等于已知的正确相位参考符号时，确定峰值。 对应于峰值的峰值和侧峰值在循环移位的最大值的范围内操作。

公开(公告)号：US20090290663A1

公开(公告)日：2009-11-26

申请号：US12124389

申请日：2008-05-21

Applicant: Elsayed Ahmed Elsayed ,  Nabil Yousef

Inventor： Elsayed Ahmed Elsayed ,  Nabil Yousef

IPC: H04L27/06

CPC classification number: H04L27/2675 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2659

Abstract: A method of estimating a coarse frequency offset of Digital Multimedia Broadcasting (DMB) transmission frames includes receiving the DMB transmission frames including a synchronization channel having a phase reference symbol, circularly shifting the phase reference symbol by applying a circular shift to the phase reference symbol, numerically correlating the circularly shifted phase reference symbol with a known correct phase reference symbol to obtain a highest peak and a side peaks of the numeric correlation, and computing a phase reference symbol angle based on a multiplication of the peak and a carrier spacing of the DMB transmission frames. The peak is determined when the circularly shifted phase reference symbol is equal to the known correct phase reference symbol. The peak and side peaks corresponding to the peak are operated in a range of a maximum value of the circular shift.

Abstract translation: 估计数字多媒体广播（DMB）传输帧的粗频偏移的方法包括：接收包括具有相位参考符号的同步信道的DMB传输帧，通过对相位参考符号进行循环移位来循环移位相位参考符号， 将循环相移参考符号与已知的正确相位参考符号数值相关以获得数值相关的最高峰值和侧峰值，并且基于DMB的峰值和载波间隔的乘法来计算相位参考符号角度 传输帧。 当循环相位参考符号等于已知的正确相位参考符号时，确定峰值。 对应于峰值的峰值和侧峰值在循环移位的最大值的范围内操作。