Method and apparatus for information transmission via power supply lines
US6005477A · kind A · utility
59Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1998 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Apr 15, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2203/5483
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and a system for rapid and interference-free data communication via power supply networks at any voltage levels. The combined effects of interference from signal distortion, frequency-selective signal attenuation or noise and from pulsed interference is reduced by using an MCM multicarrier modulation method. By combining the MCM method with a specially adapted interleaver (data scrambler) and error-protection coding, the error rates can be drastically reduced and the transmission rates can be increased to considerably more than 2 kbit/s.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.