Non-intrusive diagnostic system for a digital modem transmission channel, including an A/D converter clocked at a multiple of the symbol rate
US5040181A · kind A · utility
5Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1989 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | Dec 27, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A non-intrusive diagnostic system for a transmission channel for a digital modem is appllied to a demodulator-regenerator, and, in each of the channels (14, 15) for the signals demodulated into baseband, it includes an analog-to-digital converter (16, 17) which is clocked by a clock signal at a frequency equal to a multiple of the symbol rate (H), said multiple being not less than twice said rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.