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:
Nov. 06, 2012
Filed:
Dec. 01, 2008
Shiou-hung Chen, San Diego, CA (US);
Grant Alexander Marshall, Campbell, CA (US);
Emilija M. Simic, La Jolla, CA (US);
Douglas Neal Rowitch, Del Mar, CA (US);
Rayman Wai Pon, Cupertino, CA (US);
Shiou-Hung Chen, San Diego, CA (US);
Grant Alexander Marshall, Campbell, CA (US);
Emilija M. Simic, La Jolla, CA (US);
Douglas Neal Rowitch, Del Mar, CA (US);
Rayman Wai Pon, Cupertino, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
An apparatus and method for short multipath mitigation. In one aspect the method comprises subtracting a first stronger path from a correlation function to obtain a first residual signal, wherein one component of the first residual signal is a weaker path; applying reconstruction on the first residual signal to obtain a first reconstructed weaker path; subtracting the first reconstructed weaker path from the correlation function to obtain a second residual signal; and applying reconstruction on the second residual signal to obtain a second stronger path. In one aspect, the apparatus includes an antenna for receiving a composite receive RF signal, a receiver front-end for converting the composite receive RF signal into a composite receive digital signal; and a processor for performing signal correlation on the composite receive digital signal to obtain a correlation function and for processing the correlation function to obtain a desired signal. In one aspect, the short multipath is identified by computing a Left Edge Height Ratio Indicator (LEHRI).