Digital Communication Questions and Answers
Q1.
The value of the probability density function of random variable is
Answer :
Positive function
Q2.
The autocorrelation function is maximum at
Answer :
Origin
Q3.
Energy spectral density defines
Answer :
Signal energy per unit bandwidth
Q4.
Spectogram is the graph plotted against?
Answer :
Time domain
Q5.
Autocorrelation is a ____ function.
Answer :
Real and even
Q6.
Continuous Impulse signal is a power or energy signal?
Answer :
Neither power nor energy signal
Q7.
How many bytes does a gigabyte have?
Answer :
1 billion bytes
Q8. To avoid aliasing
Answer :
Reduce the bandwidth & Cut out high frequency
Q9.
Decreasing the data rate is called as
Answer :
Down sampling
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