Electronics and Communication Engineering
2018 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE ECE 2018 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 25–27 of 65. Imported answers require review unless explicitly marked reviewed.
Question 15
Open questionECNAT1 markNeeds review
Consider the following amplitude modulated signal:
The ratio (accurate to three decimal places) of the power of the message signal to the power of the carrier signal is __________.Log in to check the answer
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Open questionECNAT1 markNeeds review
Consider a binary channel code in which each codeword has a fixed length of 5 bits. The Hamming distance between any pair of distinct codewords in this code is at least 2. The maximum number of codewords such a code can contain is __________.
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Open questionECNAT1 markNeeds review
A binary source generates symbols
which are transmitted over a noisy channel. The probability of transmitting
is 0.5. Input to the threshold detector is
. The probability density function
of the noise
is shown below. 
If the detection threshold is zero, then the probability of error (correct to two decimal places) is __________.
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