Signal processor with improved efficiency
US5729577A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | May 21, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0093
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A signal processor arranged and constructed to provide a discrete time Fourier transform (DTFT) corresponding to a sequence of samples, including a current, preferably, last sample, of a signal, the signal processor including a recursive structure (303), coupled to the signal and operating on the sequence of samples, for providing an output (309) and a first previous output (310), the output proportional to a combination of the current sample of the signal, and the first previous output weighted by a sinusoidal function, less a second previous output (316), the sinusoidal function having an argument corresponding to an arbitrary frequency, and a combiner (330) coupled to the output and the first previous output for providing a DTFT signal proportional to a DTFT evaluated at the arbitrary frequency for the sequence of samples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.