Communication channel accuracy measurement
US6928592B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 2002 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Nov 18, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/242
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This invention relates to the measurement of the accuracy of a communication channel. The invention provides a method and apparatus for determining channel degradation information for a communications channel, in which a known data sequence is generated within a transmitter; a coded data sequence based on the known data sequence is transmitted using the transmission channel; said known data sequence is generated within the receiver; and the known data sequence generated within the receiver is compared with a decoded data sequence based on data received via the channel to provide said channel degradation information;wherein a source encoder in the transmitter has the ability to generate a predetermined output data sequence in response to a predetermined input data sequence; the known data sequence is generated within the transmitter and within the receiver in dependence upon the predetermined output data sequence; and the decoded data sequence is measured prior to source decoding in the receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.