Signal recognizer for communications signals
US6690746B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2000 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Dec 3, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2218/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A signal recognizer capable of classifying any of all commonly used communications signals. The recognizer has a number of modules that may operate in parallel, each module associated with a different signal type. Each module determines signal parameters by first estimating one or more parameters of a detected signal of interest. The estimated parameter(s) is then used as the basis for demodulating the input signal. The demodulated symbols are used for hypothesis testing, during which the module decides on a candidate signal type for that module. Each module subjects its candidate signal type to a “false alarm” test, which evaluates the likelihood that the signal is not the signal type associated with the module. The resulting confidence data is collected and analyzed to determine a best candidate signal type from among all the modules, together with its signal parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.