The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2007
Filed:
Nov. 15, 2002
Applicants:
Timothy F. Murphy, Ramona, CA (US);
Martin Staszak, Poway, CA (US);
Inventors:
Timothy F. Murphy, Ramona, CA (US);
Martin Staszak, Poway, CA (US);
Assignee:
3Com Corporation, Marlborough, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
H04L 7/00 (2006.01); H04L 25/00 (2006.01); H04L 25/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for determining symbol boundaries in an ADSL modem, comprising receiving multi-frequency modulated signals in the time domain, wherein the multi-frequency modulated signals include a pilot signal at a pilot frequency. Performing a time-to-frequency transform on the multi-frequency modulated signals to recover the pilot signal. Iteratively computing a phase error for the pilot signal over a number of transform regions. Selecting the transform region with the lowest phase error.