Block decision feedback equalizer
CA 2196127 C · Owner: Jorgenson, Mark B. · Inventors: Moreland, Kenneth W.; Crozier, Stewart N.; Jorgenson, Mark B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A block decision feedback equalizer uses a Cholesky algorithm to factora channel impulse response correlation matrix in order to solve for data received over a dispersive communications channel. While the Cholesky algorithm increases the computational complexity of the initial data symbol estimate (the result of a linear block estimation) its use allows, the use of a recursive update for computing successive data symbols with little additional computation. Further the Cholesky algorithm is, free of limitations that would limit detection to cases where the channel span or memory is smaller than the probe segment following the data block to be detected. Additional functions such as diversity …
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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 28, 1997 and granted August 13, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2019.
- 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.