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:
Jul. 09, 2013
Filed:
Sep. 01, 2009
Lingjie LI, Ottawa, CA;
Shiquan Wu, Nepean, CA;
Lingjie Li, Ottawa, CA;
Shiquan Wu, Nepean, CA;
Wi-Lan Inc., Ottawa, ON, CA;
Abstract
A received signal comprises a continuous sequence of symbols φ, φ, . . . φ, each represented by a sequence of samples X, X, . . . X, and wherein the symbols have a guard period GP of duration Tat the beginning thereof. Each guard period contains a cyclic prefix with the same subsequence of samples as a tail end portion of the associated symbol. The symbols are identified by delaying the received signal by a fixed number of samples, computing the correlation of the received signal with the delayed signal, computing the summation of said correlation over a window of duration T, wherein T>T, and sliding the window over the correlation to find a characteristic point or region. The start of each symbol for further processing is selected from the characteristic point or region. By increasing the duration of the window, more robust performance can be achieved, especially in multipath conditions.