Frame synchronous dynamic captive device in orthogonal FDM system
Title：
Frame synchronous dynamic captive device in orthogonal FDM system
Application Number：
 200410003497
Application Date：
 2004/04/02
Announcement Date：
 2005/01/12
Pub. Date：
 2006/10/11
Publication Number：
 1564505
Announcement Number：
 1279715
Grant Date：
 2006-10-11
Granted Pub. Date：
 2006-10-11
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H04L 7/00
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Kuang Linling, Liu Jianhua, Pei Jukui
Key Words：
 Frame synchronous, dynamic captive device, orthogonal FDM system
Abstract：
 The device includes crosscorrelator, autocorrelator, digit loop filter, threshold decision unit, and peak detector. Following operation is executed: carrying out crosscorrelation calculation between OFDM sequence received by crosscorrelator and local reference sequence; carrying out autocorrelation calculation between OFDM sequence and delayed sequence; carrying out peak detection when both of threshold values of autocorrelation and crosscorrelation are satisfied; peak value of crosscorrelation is sent to loop filter to obtain new threshold values of crosscorrelation; several autocorrelation values at the position of peak value of crosscorrelation are sent to second loop filter to obtain new threshold values of autocorrelation. The circuit realizes capturing position of frame synchronization accurately.
Claim：
Priority：
PCT：
LegalStatus：

Recommend this patent:
1 2 3 4 5
Average ( 0 votes):
                                                                          Recommended Patents>>

Relevancy information



Other Patents of Same Inventor

OFDM receiving and dispatching system for high speed mobile environment
Mobile terminal oriented multimedia broadcasting system and implementing method thereof
Mobile terminal receiving multimedia television broadcasting
Mobile terminal receiving multimedia television broadcasting
Frame synchronous circuit and method for eliminating time frequency deviation effect of orthogonal FDM



News & Events More>>

Last Update  
2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







Copyright 2008-2015 All Rights Reserved Patent License of China.      Designed by Easygo