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Satellite Communication

Q1:

Which one of the following statements regarding compandor is FALSE?

A It compresses the higher-amplitude parts of a signal before modulation and expands them back to normal again after demodulation.

B It gives preferential treatment to the weaker parts of the signal

C For weaker signals it gives a poor ratio of signal strength to quantizing error

D Weaker signals, traverse more quantum steps than they would do otherwise and so quantizing error is reduced.

ANS:C - For weaker signals it gives a poor ratio of signal strength to quantizing error

While converting analog signal to digital, there is a gap between one level to another level. This error due to the size of quantization is Quantizing error.



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