Wireless transmission method for antenna arrays using unitary space-time signals
CA 2287759 C · Owner: Marzetta, Thomas Louis · Inventors: Marzetta, Thomas Louis; Hochwald, Bertrand M.; Urbanke, Rudiger L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Messages according to a method of wireless signal transmission are sent as sequences of unitary space-time signals. Each signal is representable as a matrix in, which each column represents a respective transmitting antenna of a transmitting, array, and each row represents a time segment. Each such matrix is proportional to, a complex-valued matrix all columns of which are mutually orthonormal. A new method for creating a constellation of signal matrices comprises providing an initial, signal in the form of a complex orthonormal matrix. The method further comprises, generating a further plurality of matrices by a process that assures that each of the, generated matrices is related to …
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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 29, 1999 and granted July 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2021.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.