PSK Flashcards
1
Q
What’s phase modulation?
A
The phase of the carrier is change by the modulating wave
2
Q
What’s Phase deviation?
A
The amount of phase change processed by the modulating wave
3
Q
What’s PSK?
A
In which the carrier phase is shifted between discrete phase values
4
Q
Null to null BW is two times the…?
A
Keying rate (bauds)
5
Q
Prior to transmission normally PSK signals are..?
A
Band pass filtered
6
Q
What happens when it’s raised cosine filtered?
A
Gets rid of the minor lobes and the major lobe has a flat top and edges
7
Q
Which PSK over comes reference problems and only changes on a 1?
A
Differential PSK
8
Q
What PSK changes on a change and needs a reference?
A
Absolute PSK
9
Q
What’s a polar plot?
A
Displaying the relationship of phase shift by plotting them on a circle
