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:
Mar. 24, 2020
Filed:
Dec. 12, 2018
Applicant:
Allen Le Roy Limberg, Port Charlotte, FL (US);
Inventor:
Allen Le Roy Limberg, Port Charlotte, FL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 27/34 (2006.01); H04L 27/26 (2006.01);
U.S. Cl.
CPC ...
H04L 27/2618 (2013.01); H04L 27/2604 (2013.01); H04L 27/2634 (2013.01); H04L 27/2684 (2013.01);
Abstract
Transmitting apparatus and receiving apparatus for communication systems use coded orthogonal frequency-division multiplexed (COFDM) dual-subcarrier-modulation (DCM) signals. The same coded data is mapped both to COFDM subcarriers located in the lower-frequency half spectrum of the DCM signal and to COFDM subcarriers located in its upper-frequency half spectrum. Symbol constellation mappings of COFDM subcarriers in those half spectra preferably employ labeling diversity providing peak-to-average power ratio (PAPR) of the COFDM DCM signals substantially reduced from PAPR of double-sideband COFDM signals.