Method and means for evaluating phase encoded communication systems
US4090242A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1976 |
| Grant date | May 16, 1978 |
| Priority date | — |
| Expiry date | Jul 15, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0334
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a system wherein transitions occur in a data signal encoded with a known format and transition displacements occur as a result of bandwidth limitations, noise, and the like, there is disclosed a method and means for measuring the probability density function associated with such transition displacements. Furthermore, the present system permits the measurement of conditional probability such that the probability density function associated with certain selected transitions can be separately evaluated. The probability density function associated with transition displacements is measured by measuring the average frequency of occurrence of transitions of the data within a narrow, first time interval, varying the first time interval over a larger, second time interval during which transitions of the data are expected to occur, and plotting the average frequency of occurrence of data transitions determined at each first interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.