公开(公告)号：US08320481B2

公开(公告)日：2012-11-27

申请号：US12468073

申请日：2009-05-19

Applicant: Hua-Feng Jin

Inventor： Hua-Feng Jin

IPC: H04L27/28 ,  H04L27/00

CPC classification number: H04L27/2662 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2675 ,  H04L27/2682

Abstract: A synchronization method used in a receiving terminal of an orthogonal frequency division multiplexing (OFDM) system is illustrated. The synchronization method includes following steps: (a) receiving an OFDM training symbol at the receiving terminal, wherein the OFDM training symbol includes many sample points; (b) calculating first function values according to the sample points by using a first function; (c) selecting D timing points from many timing points corresponding to the first function values, wherein D first function values of the D timing points are larger than a first threshold value; (d) calculating D second function values of the D timing points by using a second function; and (e) selecting a first timing point from the D timing points, and setting the first timing point as a timing synchronization point, wherein the second function value of the first timing point is a first one greater than a second threshold value.

Abstract translation: 示出了在正交频分复用（OFDM）系统的接收终端中使用的同步方法。 同步方法包括以下步骤：（a）在接收终端接收OFDM训练符号，其中OFDM训练符号包括许多采样点; （b）使用第一函数根据采样点计算第一函数值; （c）从对应于第一功能值的许多定时点选择D个定时点，其中D个定时点的D个第一功能值大于第一阈值; （d）使用第二函数计算D个定时点的D个第二函数值; 以及（e）从D个定时点选择第一定时点，并将第一定时点设置为定时同步点，其中第一定时点的第二功能值是大于第二阈值的第一定时点。

公开(公告)号：US20100246698A1

公开(公告)日：2010-09-30

申请号：US12468073

申请日：2009-05-19

Applicant: Hua-Feng Jin

Inventor： Hua-Feng Jin

IPC: H04J11/00 ,  H04L27/28

CPC classification number: H04L27/2662 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2675 ,  H04L27/2682

Abstract: A synchronization method used in a receiving terminal of an orthogonal frequency division multiplexing (OFDM) system is illustrated. The synchronization method includes following steps: (a) receiving an OFDM training symbol at the receiving terminal, wherein the OFDM training symbol includes many sample points; (b) calculating first function values according to the sample points by using a first function; (c) selecting D timing points from many timing points corresponding to the first function values, wherein D first function values of the D timing points are larger than a first threshold value; (d) calculating D second function values of the D timing points by using a second function; and (e) selecting a first timing point from the D timing points, and setting the first timing point as a timing synchronization point, wherein the second function value of the first timing point is a first one greater than a second threshold value.

Abstract translation: 示出了在正交频分复用（OFDM）系统的接收终端中使用的同步方法。 同步方法包括以下步骤：（a）在接收终端接收OFDM训练符号，其中OFDM训练符号包括许多采样点; （b）使用第一函数根据采样点计算第一函数值; （c）从对应于第一功能值的许多定时点选择D个定时点，其中D个定时点的D个第一功能值大于第一阈值; （d）使用第二函数计算D个定时点的D个第二函数值; 以及（e）从D个定时点选择第一定时点，并将第一定时点设置为定时同步点，其中第一定时点的第二功能值是大于第二阈值的第一定时点。