Digital Communications

Random Processes

Question 1
Marks : +2 | -2
Pass Ratio : 100%
The source output in PCM and DPCM is quasi stationary.
True
False
Explanation:
The source output of PCM and DPCM and stationary in nature.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Binomial distribution deals with
Continuous random variable
Discrete random variable
Continuous & Discrete random variable
None of the mentioned
Explanation:
Binomial distribution deals with discrete random variable.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
The type of distortion which occurs in delta modulation is
Slope overload distortion
Granular noise
Slope overload distortion & Granular noise
None of the mentioned
Explanation:
The two types of distortion that occurs in delta modulation are slope overload distortion and granular noise.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Analog source coding method are
Temporal waveform coding
Spectral waveform coding
Model based coding
All of the mentioned
Explanation:
Three types of analog source coding methods are temporal waveform coding, spectral waveform coding and model based coding.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
Stochastic processes are
Strict sense stationary process
Wide sense stationary process
All of the mentioned
None of the mentioned
Explanation:
Stochastic process is a wide sense stationary process.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
In poisson distribution mean is ______ variance.
Greater than
Lesser than
Equal to
Does not depend on
Explanation:
In poisson distribution, variance is nearly same or equal to mean of the distribution.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Which method is much better and efficient?
Vector quantization
Scalar quantization
Vector & Scalar quantization
None of the mentioned
Explanation:
Vector quantization will always equal or exceed the performance of scalar quantization.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
Gaussian process is a
Wide sense stationary process
Strict sense stationary process
All of the mentioned
None of the mentioned
Explanation:
If Gaussian process is a wide sense stationary process then it will also be strict sense stationary process.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Stochastic process are
Random in nature
Are function of time
Random in nature and are a function of time
None of the mentioned
Explanation:
Stochastic process are random in nature and are a function of time.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Which reduces the dynamic range of quantization noise in PCM?
Non uniform quantizer
Uniform quantizer
Adaptive quantizer
None of the mentioned
Explanation:
Adaptive quantizer reduces the dynamic range of quantization noise in PCM and DPCM.