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:
Jan. 08, 2019
Filed:
Dec. 14, 2016
Raytheon Company, Waltham, MA (US);
Mostofa Howlader, Tucson, AZ (US);
Anthony Reid, Tucson, AZ (US);
Raytheon Company, Waltham, MA (US);
Abstract
Concepts, systems and methods are provided herein for generating encoded binomial pulse position modulation (BPPM) signals having random, sparse sets of multiple pulses per channel usage interval for use in Free-Space Optical (FSO) communications. A data symbol can be modulated into a set of BPPM pulses for transmission over a FSO channel and a signal can be generated having the set of BPPM pulses over a predetermined time interval. The BPPM pulses can be encoded into one or more codewords based on a number of error correction bits to form a coded signal using the one or more codewords to represent the signal having the set of pulses for transmission over the free-space optical channel. The coded signal can be filtered and sampled to generate a set of samples. Position and amplitude data for the samples can be determined to reconstruct and decode the coded signal.