- Filtered symmetric differential phase-shift keying
In
telecommunication , filtered symmetric differential phase-shift keying (FSDPSK) is a method of encodinginformation fordigital transmission in which:* A 0
bit is encoded as a +90° change in the carrier phase, and a 1 bit is encoded as a -90° change in the carrier phase
* Abrupt phase transitions are smoothed by filtering or other functionally equivalentpulse shaping techniques.See also
Phase-shift keying "Source:
Federal Standard 1037C "
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