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:
Jun. 23, 2015
Filed:
Aug. 01, 2014
Gregory Hubert Piesinger, Cave Creek, AZ (US);
Gregory Hubert Piesinger, Cave Creek, AZ (US);
Other;
Abstract
A Coded Orthogonal Frequency Division Multiplexing (COFDM) communication systems is implemented in which each subcarrier data stream is individually FEC encoded instead of FEC encoding the overall input data stream as implemented in conventional COFDM systems. Specifically, each subcarrier is independently encoded using pseudo orthogonal QPSK M-QAM FEC modulators, transmitted, and decoded using pseudo orthogonal QPSK M-QAM FEC demodulators. Multiplexers and demultiplexers randomize subcarrier symbols across all subcarriers to prevent contiguous subcarrier data errors due to fading or corruption by narrowband interference. This technology can be applied to many wireless and wired communication systems including wireless underwater RF communications.