System and method for data communication over power lines
US7986711B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2005 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | Jun 5, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2203/5416
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method for broadband communications over power lines has a low-voltage transformer for the house connection unit and/or the electricity distribution inside the house. The system method allow for several parallel asynchronous data communications in different sub-channels with individual transmit power in each sub-channel. Sub-channel separation uses pass-band filters with high stop-band attenuation. High data rate in each sub-channel is achieved through the use of discrete wavelet multi-tone modulation. Coarse synchronization in each sub-channel and the optimization of the coefficients of the time-domain equalizer are carried out using a training sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.