Robert R Mccarty

US Patent:

6925134, Aug 2, 2005

Filed:

May 1, 2000

Appl. No.:

09/561706

Inventors:

Chiaming Lo - Irvine CA, US
Robert Joseph McCarty - Rockwall TX, US

Assignee:

CynTrust Communications, Inc. - Dallas TX

International Classification:

H04L007/00
H04L007/06

US Classification:

375354, 375364

Abstract:

A system and method for information content-independent synchronization with a received signal. A variable of the signal (e. g. , average energy or magnitude) which is related to the energy distribution, is measured over a period of time. The signal's information bearing point is found at the point within the information period of the signal with the highest averaged energy. The point may be found, for example, by detecting the sample point with highest average energy, or by correlating multiple sample points to a stored template. Interpolation may be performed to locate an information bearing point that is between sample points. Because the relative energy content of the signal is effectively independent of the specific information content, synchronization with the information bearing point is accomplished without requiring the insertion of any special information content or fixed content patterns into the signal.