Digital Communications Interview Experienced Online Exam Quiz

Digital Communications Interview Experienced GK Quiz. Question and Answers related to Digital Communications Interview Experienced. MCQ (Multiple Choice Questions with answers about Digital Communications Interview Experienced

Optimum threshold value is given by

Options

A : a0+a1/2

B : a0-a1/2

C : a0/2

D : a1/2

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Example for antipodal bandpass signaling is

Options

A : BPSK

B : ASK

C : FSK

D : MSK

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The symbol of the probability under the tail of Gaussian pdf is called as

Options

A : Complementary error function

B : Co error function

C : Complementary error & Co error function

D : None of the mentioned

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The impulse response of the filter is the ________ of the mirror image of the signal waveform.

Options

A : Delayed version

B : Same version

C : Delayed & Same version

D : None of the mentioned

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An error in binary decision making occurs when the channel noise is

Options

A : Greater than the optimum threshold level

B : Lesser than the optimum threshold level

C : Greater or Lesser than the optimum threshold level

D : None of the mentioned

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According to the rule of minimizing the error probabilities, the hypothesis should be like if the priori probabilities are ________ than the ratio of likelihoods.

Options

A : Lesser

B : Greater

C : Equal

D : None of the mentioned

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The likelihood ratio test is done between

Options

A : Likelihood of s1 by likelihood of s2

B : Likelihood of s2 by likelihood of s1

C : Likelihood of s1 by likelihood of s1

D : None of the mentioned

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For a M-ary signal or symbol the number of likelihood functions are

Options

A : M

B : M+1

C : M-1

D : 2M

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Matched filter provides _____ signal to noise ratio.

Options

A : Maximum

B : Minimum

C : Zero

D : Infinity

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The detector that minimizes the error probability is called as

Options

A : Maximum likelihood detector

B : Minimum likelihood detector

C : Maximum & Minimum likelihood detector

D : None of the mentioned

View Answer

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