CN ratio measuring apparatus
US5450623A · kind A · utility
44Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1993 |
| Grant date | Sep 12, 1995 |
| Priority date | — |
| Expiry date | Sep 17, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A measuring apparatus is provided which is capable of measuring CN ratio. The measuring apparatus has a measuring band specifying unit for specifying a band under measurement; a display for displaying the spectrum of levels measured in the specified band; first and second noise measuring frequency specifying units; a transmission channel selector; and a CN ratio calculating unit for estimating a noise level at a carrier of a selected transmission channel and for calculating the CN ratio using the estimated level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.