Signal processing with channel eigenmode decomposition and channel inversion for mimo systems
CA 2490642 A1 · Owner: Walton, Jay R. · Inventors: Walton, Jay R.; Ketchum, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Techniques for processing a data transmission at a transmitter and receiver which use channel eigen-decomposition, channel inversion and (optionally) , "water-pouring". At the transmitter (1) channel eigen-decomposition is , performed to determine eigenmodes of a MIMO channel and to derive a first set of steering vectors, (2) channel inversion is performed to derive weights (e.g. one set for each eigenmode) used to minimize ISI distortion and (3) , water-pouring may be performed to derive scaling values indicative of the transmit powers allocated to the eigenmodes. The first set of steering vectors, weights, and scaling values are used to derive a pulse-shaping matrix, which is used 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 June 20, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 20, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2025.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.