Techniques for data transmission using high-order modulation
US8891661B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2008 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Sep 17, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques for data transmission using high-order modulation are provided. According to one aspect, parameters of a transmission link are determined, and a multilevel coding scheme and a high-order modulation signal constellation are selected on the basis of the determined parameters. An information indicating the selected multilevel coding scheme and high-order modulation signal constellation and data symbols encoded according to the selected multilevel coding scheme and high-order modulation signal constellation are transmitted. In other aspects, QPSK data symbols are embedded between M-QAM data symbols or M-PSK data symbols with M>4. The QPSK data symbols may be used to improve the efficiency of the decoding process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.