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Canadian application, no grantCanada

A method of channel estimation and compensation based thereon

CA 2305987 A1 · Owner: Liu, Shang-Chieh · Inventors: Nicoloso, Steven Peter; Uptegrove, Dirck; Buehrer, R. Michael

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Abstract From the Canadian patent

The method of channel estimation determines linear regression coefficients for N blocks of a first signal component in a received signal on a block-by-block basis and determines a channel estimate based on the linear regression coefficients for the N blocks. Using the channel estimate, channel distortion in a second signal component of the received signal can be significantly eliminated.

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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 April 18, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 18, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 18, 2000
GrantedNo grant recorded
Term endedApril 18, 2020
Patent numberCA 2305987 A1
Classification (IPC)H04L27/01 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedApril 18, 2000Term endedApril 18, 2020

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.