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:
May. 06, 2003
Filed:
Oct. 22, 1999
Bruce Fette, Mesa, AZ (US);
Peter J. Leahy, Scottsdale, AZ (US);
General Dynamics Decision Systems, Inc., Scottsdale, AR (US);
Abstract
A new modulation/demodulation method and apparatus are described for use with RF communication. A transmitter ( T) modulates information onto a plurality of carrier signals transmitted simultaneously over a corresponding plurality of frequencies using cepstral modulation. A receiver ( R) receives the plurality of carrier signals and demodulates the signals utilizing cepstral demodulation. Receiver ( R) monitors the carrier signals and in response to predetermined conditions selects a cepstral constellation to be utilized. Receiver ( R) provides the cepstral constellation information to a transmitter ( T) that, in turn, transmits the cepstral constellation information to a receiver ( R), in turn, provides the cepstral constellation information to transmitter ( T). Transmitter ( T) utilizes the selected cepstral constellation information to modulate the next transmission of the plurality of carrier signals.