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:
Apr. 04, 2023
Filed:
Feb. 10, 2022
Applicant:
Sun Patent Trust, New York, NY (US);
Inventors:
Assignee:
SUN PATENT TRUST, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 27/26 (2006.01); H04L 5/00 (2006.01);
U.S. Cl.
CPC ...
H04L 27/26524 (2021.01); H04L 5/0048 (2013.01); H04L 27/2607 (2013.01); H04L 27/2613 (2013.01); H04L 27/2647 (2013.01); H04L 27/2662 (2013.01); H04L 27/2675 (2013.01); H04L 27/2698 (2013.01); H04L 27/2649 (2013.01);
Abstract
An OFDM transmitter and an OFDM receiver respectively transmit and receive N (N≥2, N is an integer) control symbols. For each control symbol, a guard interval time-domain signal is, for example, identical to a signal obtained by frequency-shifting at least a portion of a useful symbol time-domain signal by an amount different from any other symbol, or to a signal obtained by frequency-shifting one or both of a portion and a span of a useful symbol interval time-domain signal different from any other symbol by a predetermined amount.