Systems and methods for communicating using ASK or QAM with uneven symbol constellation
US8908799B2 · kind B2 · utility
3Cited by
4References
52Claims
0Family size
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Key dates
| Filing date | Aug 15, 2008 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Oct 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2001/0098
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods of performing ASK or QAM modulation with uneven distance between symbols are provided. Different bit positions mapped to such symbols are assigned to different receivers, with the result that there are different BER performances among bits sent from a transmitter to the different receivers. Bits for multiple receivers are mapped to a UASK constellation or a UQAM constellation without using superposition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.