Method for designing an amplitude and phase shift keying constellation
US9306791B2 · kind B2 · utility
4Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2014 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Feb 7, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0009
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of digital modulation comprises generating a stream of modulation symbols in order to produce a modulated signal. The modulation symbols belong to a multi-ring digital signal constellation having all signal points placed on at least two concentric rings. The total number of signal points is larger than 8, and at least one ring has unequally spaced points constructed to form together with at least one neighbouring ring a subset of neighbouring rings. Each signal point of the subset has a unique angular coordinate modulo 2π and the angular spacing of the signal points of the subset is uniform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.