Electronics and Communication Engineering
GATE ECE Error correction PYQs
Build your understanding with focused practice from past exam papers.
How to practice Error correction
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–2 of 2. Imported answers require independent review unless marked reviewed.
Question 47
Open questionECMCQ2 marksNeeds review
The information bit sequence
is to be transmitted by encoding with Cyclic Redundancy Check 4 (CRC-4) code, for which the generator polynomial is
. The encoded sequence of bits is ______.Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 62
Open questionECNAT2 marksNeeds review
Consider communication over a memoryless binary symmetric channel using a (7, 4) Hamming code. Each transmitted bit is received correctly with probability
, and flipped with probability
. For each codeword transmission, the receiver performs minimum Hamming distance decoding, and correctly decodes the message bits if and only if the channel introduces at most one bit error.For
, the probability that a transmitted codeword is decoded correctly is ________ (rounded off to two decimal places).Log in to check the answer
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