1. Computer Science Engineering (CSE)
  2. Communication Engineering
  3. The power efficiency of the M ary PSK de...

The power efficiency of the M ary PSK decreases because of the            

A. freely packed constellation
B. increment of bandwidth efficiency
C. fixed null bandwidth
D. densely packed constellation
Answer» D. densely packed constellation
Explanation: bandwidth efficiency increases as the value of m increases. but at the same time, increasing m implies that the constellation is more densely packed. hence the power efficiency or noise tolerance is decreased.
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