System, device and method for improving a defined property of transform-domain signals
CA 2328145 A1 · Owner: Kschischang, Frank Robert · Inventors: Yang, Jian; Narula, Aradhana; Kschischang, Frank Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a transmitter (10) for transmitting data in blocks over a channel to a receiver (19), a device for improving a defined property of transform-domain symbols, the device, including: a signal mapper (12) which maps the input data into blocks of symbols in a first domain; wherein each of the symbols is chosen from a base constellation contained in an expanded constellation having expansion symbols, and wherein at least some of the symbols in the base constellation have one or more corresponding expansion symbols; and a perturbation transform device (14 and 16) responsive to the blocks of , symbols, which produces for each block of symbols in the first domain a block of perturbed …
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 April 9, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 9, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 2021.
- 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.