Power control and scheduling in an ofdm system
CA 2525588 C · Owner: Naguib, Ayman Fawzy · Inventors: Agrawal, Avneesh; Naguib, Ayman Fawzy; Sutivong, Arak
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for power control and scheduling of sub-carriers in an OFDM communication system. The receiver dynamic range can be minimized by a power control loop that attempts to maintain received power over a noise floor in a predetermined range. If the received power relative to a noise floor in allocated sub-carriers exceeds the predetermined range and the total received power is at the minimum, the scheduling system allocates an additional subcarrier to the communication link. Additionally if the received power , relative to the noise floor is less than the predetermined range minimum and , the total received power is at a maximum the scheduling system de-allocates a , …
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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 May 14, 2004 and granted August 19, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 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.
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.