Interleaving in coded modulation for mobile radio
CA 2030097 C · Owner: Wei, Lee-Fang · Inventors: Wei, Lee-Fang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Interleaved block-coded modulation with built-in time diversity is used for fading channel applications. Various modulated block codes of various dimensionalities are disclosed, each built up from an M-DPSK constellation. The signal points making up each codeword are re-ordered by an interleaver in a way which matches the interleaving to the block code thereby increasing the effective, size of the interleaver.
Read the whole patent
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 November 15, 1990 and granted February 20, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.