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:
Jun. 18, 2019
Filed:
Oct. 03, 2016
Origin Wireless, Inc., Greenbelt, MD (US);
Yi Han, Greenbelt, MD (US);
Yu-Han Yang, Santa Clara, CA (US);
Yan Chen, ChengDu, CN;
K. J. Ray Liu, Potomac, MD (US);
Hang Ma, Greenbelt, MD (US);
Beibei Wang, Clarksville, MD (US);
Hung-Quoc Duc Lai, Parkville, MD (US);
Zoltan Safar, Ellicott City, MD (US);
Qinyi Xu, Greenbelt, MD (US);
Chen Chen, College Park, MD (US);
Origin Wireless, Inc., Greenbelt, MD (US);
Abstract
An apparatus for determining symbol timing in a communication system is provided. The apparatus includes a memory communicatively coupled to at least one processor. The at least one processor is configured to receive a first signal that includes a preamble sent at a first sampling rate with a first modulation through a channel and a data frame sent at a second sampling rate with a second modulation through the channel. The preamble includes a received code sequence, and the data frame includes a plurality of data symbols. The at least one processor is configured to compute a second signal that represents an estimate of an equivalent channel response using at least one of a known code sequence and the received first signal, down-sample the second signal and compute signal-to-interference-plus-noise ratios at a plurality of candidate timing offsets, and determine a symbol timing based on a particular timing offset associated with one of the computed signal-to-interference-plus-noise ratios.