Communication signal having a time domain pilot component
CA 2098011 C · Owner: Jasper, Steven Charles · Inventors: Solomon, James Douglas; Jasper, Steven Charles; Birchler, Mark Allen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A quad 16 QAM transmission (132-136) and reception (600) methodology wherein a time domain pilot reference is advantageously associated therewith. There may be one or more such pilot references for each packet of multiple 16 QAM pulses (200). Depending upon the embodiment each 16 QAM pulse can include a time domain pilot reference or an estimated pilot reference, (402 and 301) for that pulse can he determined either by reference to pilot references in other pulses sharing the same packet or, by reference to pilot references for other previously received 16 QAM pulses corresponding to that same pulse.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed August 14, 1992 and granted June 22, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2014.
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Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.