Constellation mapping for modulated communications
US7006578B2 · kind B2 · utility
4Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2001 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Dec 24, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3422
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Constellations (22) arranged in a concentric circle pattern provide simplified control of modulated communication. A plurality of concentric circles (26, 28, 30) with defined points (24) include convolutionally coded and uncoded bits. Constellation patterns having three or four concentric circles (26, 28, 30) are provided. A magnitude error for each of the points (24) allows for deviations during communication. The constellations (22) provide efficient communication using non-linear channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.