QPSK demodulator
Abstract
A description of the quaternary phase shift keying modulated signal and of its spectral characteristics is presented. A closed loop demodulator structure is presented, obtained from some practical approximations from the ideal structure. The problem of phase ambiguities is discussed and a technique to solve it is described.
- Publication:
-
Presented at 33rd Ann. Meeting of SBPC
- Pub Date:
- July 1981
- Bibcode:
- 1981sbpc.meet....8R
- Keywords:
-
- Feedback Control;
- Phase Demodulators;
- Phase Shift Keying;
- Estimates;
- Probability Theory;
- Signal Analysis;
- Spectrum Analysis;
- Communications and Radar