Method and apparatus for phase-domain semi-coherent demodulation
US7245672B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2003 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Sep 15, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2332
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for phase-domain semi-coherent demodulator including a receiver for receiving at least a phase component of an input signal. The phase domain semi-coherent demodulator may include a decision unit for forming a decision based on a delayed reference signal and the phase component of the input signal. In addition the phase domain semi-coherent demodulator may include a phase sum adder for subtracting the decision from the phase component of the input signal to form a rotated input phase, a second phase sum adder for subtracting the delayed reference signal from the rotated input phase to form a resulting signal, and a scaler for scaling the resulting signal to form an update signal. A third phase sum adder adds the update signal to the delayed reference signal to form a reference signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.