Carrier to noise ratio estimations from a received signal
US7639759B2 · kind B2 · utility
11Cited by
219References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 5, 2004 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Mar 17, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/455
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Techniques for measuring the carrier to noise ratio (CNR) in a received digital signal are disclosed. The methods can operate on a received digital signal, such as a layered modulation signal used in a satellite television system. The CNR measurement can be made at the output of a carrier recovery loop or a timing recovery loop in a demodulator. Alternately, the CNR measurement can be made when the received signal is digitized in an analog to digital (A/D) converter at base-band by the demodulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.