High rate transmission diversity transmission and reception
CA 2472243 C · Owner: Tirkkonen, Olav · Inventors: Hottinen, Ari; Tirkkonen, Olav
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The performance and symbol rate in a wireless mobile system are increased by forming a transmission code matrix using transformed orthogonal codes in such , a way that the code is robust to channel statistics and operates well in both Ricean and (correlated) Rayleigh channels. Furthermore the invention enables , high symbol rate transmission using multiple transmit antennas and one or , multiple receive antennas and obtains simultaneously high diversity order and high symbol or data rate.
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 January 3, 2003 and granted October 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 3, 2025.
- 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.