Method and apparatus for signal degradation measurement
US6714896B1 · kind B1 · utility
13Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2000 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Aug 15, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03178
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of measuring the degradation of a data stream owing to the influence of errors thereon is disclosed. Unlike known degradation measures, a measure calculated in accordance with the present invention takes into account the variation in the significance of an error in dependence upon the elements which are affected by it. A particular application of the method to the selection of one of a number of possible speech coding methods for use in transmitting speech across a radio link (20) from a mobile phone (10) to a base station (30) is described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.