Receiver spatial processing for eigenmode transmission in a mimo system
CA 2542270 C · Owner: Qualcomm Incorporated · Inventors: Walton, J. Rodney; Howard, Steven J.; Wallace, Mark S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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For eigenmode transmission with minimum mean square error (MMSE) receiver spatial processing, a transmitter performs spatial processing on NS data symbol streams with steering vectors to transmit the streams on NSspatial channels of a MIMO channel. The steering vectors are estimates of transmitter steering vectors required to orthogonalize the spatial channels. A receiver derives a spatial filter based on an MMSE criterion and with an estimate of the MIMO channel response and the steering vectors. The receiver (1) obtains NR received symbol streams from NR receive antennas (2) performs spatial , processing on the received symbol streams with the spatial filter to obtain NS filtered …
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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 29, 2004 and granted March 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.