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Canadian application, no grantCanada

Iterative fast fourier transform error correction

CA 2443095 A1 · Owner: Pan, Jung-Lin · Inventors: Pan, Jung-Lin; Zeira, Ariela

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Data is to be estimated from a received plurality of data signals in a code division multiple access communication system. The data signals are transmitted in a shared spectrum at substantially a same time. A combined signal of the transmitted data signals are received over the shared spectrum (42) and sampled (43). A channel response for the transmitted data signals is estimated. Data of the data signals is estimated (44) using the samples and the estimated channel response. The data estimation uses a fourier transform based data estimating approach. An error in the data estimation introduced from a circulant approximation used in the fourier transform based approach is …

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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 5, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 5, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 2024.
  • 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 5, 2002
GrantedNo grant recorded
Term endedApril 5, 2022
Patent numberCA 2443095 A1
Classification (IPC)G06F11/00 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedApril 5, 2002Term endedApril 5, 2022

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