Method and apparatus for rotating the phase of a complex signal
US6535562B1 · kind B1 · utility
10Cited by
5References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1999 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Nov 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2082
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In applications employing phase-shift keying modulation, a phase rotator as disclosed herein is used to rotate the constellation of signal vectors before carrier modulation in order to maximize modulator output power. Such a rotator may be applied in the digital domain (to complex signals having either binary-valued or multi-valued components) or in the analog domain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.