Report discusses several techniques for resolution of phase ambiguities in detection and decoding of radio signals modulated by coherent quadrature phase-shift keying (QPSK) and offset QPSK (OQPSK). Eight ambiguities: four associated with phase of carrier signal in absence of ambiguity in direction of rotation of carrier phase, and another four associated with carrier phase in presence of phase-rotation ambiguity.
Resolution Of Phase Ambiguities In QPSK
NASA Tech Briefs ; 16 , 1
1992-01-01
Miscellaneous
No indication
English
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