Digital Communication Questions and Answers, Set 2

Digital Communication Questions and Answers

Q1. 

Properties of impulse function are

Answer :  

1.Symmetry

2. Time scaling

3. Shifting

Q2. 

ADSL has _____ information channels.

Answer : 

Three

Q3.

A band-pass signal has

Answer : 

No DC component

Q4. 

A stationary stochastic process has

Answer : 

Infinite zero signal

Q5. 

A rectangular pulse of duration T is applied to a matched filter. The output of the filter is a

Answer : 

Triangular pulse

Q6. 

The weighing matrix is

Answer : 

Positive quantity & Inverse of a covariance matrix of the input vector

Q7. 

Voltage generated by lightning is an example for

Answer : 

Energy signal

Q8. 

If operating frequency bands are higher ______ is available.

Answer : 

Larger bandwidth

Q9. 

In flat top sampling scheme, ______ is kept constant after sampling.

Answer : 

Amplitude

Q10. 

The equivalent temperature in a receiver design must be kept

Answer :  

Low

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