Multi-carrier transmission method using symbol redundancy and corresponding apparatus
CA 2417774 A1 · Owner: Nortel Networks Limited · Inventors: Humphrey, Leslie Derek
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of transmitting symbols in a wireline multi-carrier communication system in which each symbol is modulated for transmission over a carrier group of pre-determined size. The method involves identifying all available carrier , groups and transmitting a replicate of the symbol on each of the available carrier groups. In preferred embodiments the individual signals transmitted , over respective carriers are phase-offset relative to each other in order to mitigate potential peaks in signal power. Corresponding apparatus and the generated signal are also provided.
Read the whole patent
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 July 30, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 30, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2023.
- 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.