Coded modulation with amplitude and phase-shift keying having a circular constellation for variable spectral efficiency
US9900105B1 · kind B1 · utility
7Cited by
5References
14Claims
0Family size
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Key dates
| Filing date | Oct 10, 2016 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Oct 10, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/34
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method involving a coded modulation scheme using an M-APSK format with a circular constellation. A maximum achievable spectral efficiency for the transmitters may be selected and a spectral efficiency step-size of the maximum achievable spectral efficiency may be specified. The spectral efficiency for any transmitter in the system may be individually selected by reducing its spectral efficiency from the maximum achievable spectral efficiencies by a selected number of steps corresponding to the step size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.