Adaptive array transmitter-receiver
CA 2248345 C · Owner: Ntt Mobile Communications Network Inc. · Inventors: Fukawa, Kazuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Received baseband signals from a plurality of antennas 11 1 to 11 Q are linearly combined through multiplication by weighting coefficients, then a decision signal is delayed for one symbol duration, and the delayed signal is multiplied by a feedback filter coefficient w b* to generate intersymbol interference which is, subtracted from the linearly combined output y(i). The subtracted output is subjected to a signal decision to obtain a decision signal then the difference between the input into a decision unit 17 and the decision signal is obtained as an error signal e(i) and weighting, coefficients w1* to w Q and the feedback filter coefficient w b* are estimated in a parameter estimation …
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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 June 2, 1998 and granted August 21, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 2, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.