Phase filter for reducing the effects of the noise components altering discrete phase modulated signals
US3972000A · kind A · utility
17Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1975 |
| Grant date | Jul 27, 1976 |
| Priority date | — |
| Expiry date | Jul 15, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H21/0012
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A digital phase filter including two decision filters connected in cascade or parallel for minimizing the noise components in a received phase modulated digital signal. The first decision filter cancels the residual noise component representing the phase intercept component and the phase shift component introduced by frequency shift, and the second decision filter minimizes the random noise component representing phase jitter and white noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.