A receiver for pilot-aided code-division multiple access
CA 2228835 C · Owner: Lucent Technologies Inc. · Inventors: Pedersen, Klaus I.; Flanagan, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pilot-aided rake receiver suitable for CDMA wireless telecommunications is disclosed. Some rake receivers in accordance with the present invention require fewer computational resources to be consumed by the conjugate pilot estimate multipliers than some pilot-aided rake receivers in the prior art. One embodiment of the present invention comprises: N rake receiver fingers wherein each of the N rake receiver fingers outputs an information-bearing signal, Ii(n), and a conjugate pilot estimate Pi(n); N multipliers; and an N , x N switch interposed between the N rake receivers and the N multipliers for routing the information-bearing signal Ii(n), and the conjugate pilot , estimate …
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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 February 4, 1998 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 4, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 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.
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.