Power-line carrier communication apparatus
US7498935B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2006 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | May 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2203/5416
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention provides a power-line carrier communication apparatus including a transmission unit with a signal point mapping device for mapping a plurality of bit streams produced from transmission data, a wavelet inverse transforming device for modulating the respective sub-carriers by wavelet waveforms which are orthogonal to each other for producing temporal waveform series data, and a D/A converter for converting the temporal waveform series data into an analog temporal waveform series signal; and a reception unit with an A/D converter for obtaining sampling-series waveform data from a power-line communication signal, a wavelet transforming device for wavelet-transforming the sampling-series waveform data into signal point data of the respective sub-carriers, and a symbol judging device for judging bit streams mapped by the signal point mapping device by inverse-mapping a plurality of these signal point data, and for synthesizing the judged bit streams with each other as a reception data series.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.