Reduced complexity and increased flexibility modified fast convolution algorithm
CA 2344634 A1 · Owner: Hellberg, Richard · Inventors: Hellberg, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention seeks to enhance the modified fast convolution algorithm in order to increase the flexibility of the algorithm. In an exemplary embodiment of the present invention, a folding unit is introduced as a preprocessing stage prior to the IDFT in the receiver. The folding unit adds outer frequency components onto inner frequency components in the frequency domain in order to produce a reduced set of frequency components. In an alternative embodiment, an unfolding unit is introduced as a post-processing stage after the DFT in the transmitter. The unfolding unit expands the set of the set of frequency components by adding translated original components outside 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 September 24, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 24, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 2021.
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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.