R

Ranjeet • 34.60K Points
Instructor I 

Q. What is the radius of the circle in M-ary PSK on which message points are equaly spaced?

(A) √es
(B) √eb
(C) eb
(D) es
Correct : Option (A)

Explanation: 
 the m-ary message points are equally spaced on a circle of radius √es centred at the origin. here es is energy per symbol. thus, mpsk is a constant envelope signal when no pulse shaping is used.

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