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:
Feb. 18, 2003
Filed:
Dec. 08, 1999
Ahmad Reza Bahai, Lafayette, CA (US);
Kumud Kumar Sanwal, Iselin, NJ (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
An efficient method of accurately estimating delay spread in multi-path transmission applications is based on quantifying the effect of the actual delay spread on the shape of the correlation energy profile between the received signal and the synchronization pattern of the receiver. Depending on the degree of the estimated delay spread, an appropriate demodulation technique is selected for optimizing the receiver performance over a range of channel multi-path conditions. The invention is applicable to digital wireless mobile communication systems, as well as to any device that performs characterization or testing of a transmission system.