Method and apparatus for using orthogonal coding in a communication system
CA 2088111 C · Owner: Falconer, David D. · Inventors: Ling, Fuyun; Falconer, David D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus is provided for encoding and decoding. In encoding, bits are encoded into symbols such that maximum likelihood decoding is facilitated. Groups of symbols are translated by either interleaving by group each group within a block and subsequently deriving an orthogonal code from each group or deriving an orthogonal code from each group and subsequently interleaving by code each code within a block. In decoding, groups of samples are transformed by either generating metrics and index symbols for each group of samples and subsequently deinterleaving by group each group of metrics within a block or deinterleaving by group each group of samples within a block and …
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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 January 26, 1993 and granted April 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 2015.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.