Modular home-networking communication system and method using disparate communication channels
US6243413A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1998 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Apr 3, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/2843
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A modular home-networking communications system which uses a physical layer modulation scheme suitable for transmission in both RF and powerline communication channels. The modulation system is based on direct-sequence spread-spectrum (DS-SS) using Barker codes to spread the information symbols, which provides both operation at low signal to noise ratio and very good resistance to time dispersion distortion due to the excellent autocorrelation properties of the Barker codes. This type of modulation system is ideal for the powerline communications channel since it spreads the transmission power over a wide range of frequency, lowering the power spectral density enough that it will provide long distance coverage without violating FCC radiated emission and conducted power regulations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.