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:
Oct. 15, 2024
Filed:
Jan. 25, 2023
Applicant:
Ast & Science, Llc, Miami, FL (US);
Inventors:
Huiwen Yao, Potomac, MD (US);
Praveen Kumar Tangutoori, Telangana, IN;
Assignee:
AST & Science, LLC, Midland, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 7/185 (2006.01); H04B 7/195 (2006.01); H04W 56/00 (2009.01);
U.S. Cl.
CPC ...
H04B 7/1858 (2013.01); H04B 7/195 (2013.01); H04W 56/0035 (2013.01); H04W 56/005 (2013.01);
Abstract
A satellite communication system leverages the carrier offset detection capability of the demodulator contained in an on-board modem of M&C channel. The modem detects the frequency error Δf introduced in the signal path from the output of the base station at ground to the output of baseband conversion on the satellite, by analyzing the baseband signal at the baseband conversion to estimate the received carrier f'c and subtracting it the from the expected frequency (fc).