Method of data modulation adapted to selected modulation rotational angle
US8848683B2 · kind B2 · utility
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12References
11Claims
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Key dates
| Filing date | Nov 11, 2008 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Mar 1, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0003
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a method, modulator, transmitter and receiver, the modulator of data signals to be transmitted simultaneously to at least two receiving mobile stations in the same transmission time slot is adapted to select rotational angle of a QPSK transmission modulation, such as a hybrid α-QPSK modulation used to modulate the data signals to the at least two mobile stations in response to the capabilities of the mobile stations that share the same transmission slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.