Uplink pilot and signaling transmission in wireless communication systems
CA 2501473 C · Owner: Vijayan, Rajiv · Inventors: Kadous, Tamer; Krishnan, Ranganathan; Vijayan, Rajiv
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Techniques to more efficiently transmit pilot and signaling on the uplink in an OFDM system. With subband multiplexing M usable subbands in the system are , partitioned into Q disjoint groups of subbands. Each subband group may be assigned to a different terminal for uplink pilot transmission. Multiple terminals may transmit simultaneously on their assigned subbands. The transmit power for the pilot may be scaled higher to attain the same total pilot energy even though S instead of M subbands are used for pilot transmission by each terminal. Pilot transmissions from the terminals are received and a channel , estimate is derived for each terminal based on the pilot received on 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 October 29, 2003 and granted July 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2025.
- 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
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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.