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:
May. 28, 2019
Filed:
Jun. 12, 2017
Applicant:
Semtech Corporation, Camarillo, CA (US);
Inventors:
Olivier Bernard André Seller, Sainte Soulle, FR;
Nicolas Sornin, La Tronche, FR;
Assignee:
Semtech Corporation, Camarillo, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/69 (2011.01); H04L 27/26 (2006.01);
U.S. Cl.
CPC ...
H04B 1/69 (2013.01); H04L 27/265 (2013.01); H04L 27/2657 (2013.01); H04B 2001/6912 (2013.01);
Abstract
A radio receiver for processing digital chirp spread-spectrum modulated signals that comprise a plurality of frequency chirps that are cyclically time-shifted replicas of a base chirp profile, said time-shifts being an encoded representation of a transmitted message. Includes a soft demapping unit that is adapted for working on fully populated as well as on partial modulation sets, and implements a timing error correction loop that acts back both in the time domain and in the frequency domain.