Adaptive channel tracking using pilot sequences
CA 2345534 A1 · Owner: Ericsson Inc. · Inventors: Ramesh, Rajaram; Arslan, Huseyin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods and systems are provided which utilize pilots in an information sequence to periodically retrain a channel estimator. Thus a channel tracker , may be synchronized using a synchronization sequence and then periodically retrained using known pilot symbols. Furthermore the utilization of pilots , may allow for the detection of errors in previous channel estimates. When errors are detected, a new channel estimate may be used based on the retraining using the pilot symbols and optionally, previous errors in symbol estimation may be corrected. Thus, by retraining based on pilot symbols the , propagation of errors may be reduced.
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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 October 12, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 12, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 2021.
- 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
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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.