Method and apparatus for producing a channel estimate with reduced rank
CA 2426650 A1 · Owner: Qualcomm Incorporated · Inventors: Blanz, Josef J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for estimating a communication channel (14) in a wireless communication system (10) having multiple transmitter antennas (12) using reduced rank estimation. The method exploits redundant and/or a priori knowledge within a system to simplify the estimation calculations. Ine one embodiment, a covariance matrix is calculated (44) and analyzed (46) to determine if the channel parameters maybe reduced for channel estimation. If not, all parameters are used (50), otherwise a reduced rank matrix (54) is used for the calculation.
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 October 19, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2023.
- 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.