Multiple antenna communication system and method thereof
CA 2247618 C · Owner: Hochwald, Bertrand M. · Inventors: Hochwald, Bertrand M.; Marzetta, Thomas Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A communications system achieves high bit rates over an actual communications channel between M transmitter antennas of a first unit and N receiver antennas of a second unit, where M or N > 1 by creating virtual sub-channels, from the actual communications channel. The multiple antenna system creates the virtual sub-channels from the actual communications channel by using propagationinformation characterizing the actual communications channel at the first and second units. For transmissions from the first unit to the second unit the first unit sends a, virtual transmitted signal over at least a subset of the virtual sub-channels using at least a portion of the propagation information. The …
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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 September 17, 1998 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 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.