Digital Communication Questions and Answers
Q1.
On increasing L
Answer :
Coding gain & Complexity increases
Q2.
A primitive element are those which yield ______ when raised to higher order exponents.
Answer :
Non zero elements
Q3.
Periodic truncation is done by
Answer :
Appending zero to end of the input data sequence
Q4.
In maximum likelihood decoding technique, the likelihood function compares the
Answer :
Conditional probabilities
Q5.
A binary symmetric channel is a
Answer :
Discrete memoryless channel
Q6.
A cyclic code can be generated using
Answer :
Generator polynomial
Q7.
Extended go-lay code is formed by
Answer :
Adding overall parity bit to perfect go-lay code
Q8.
The sum of any two vectors in subset S is also in S. This is called as
Answer :
Closure property
Q9.
Some examples of linear codes
Answer :
1. Hamming code
2. Reed-Solomon code
3. Parity code
Q10.
The minimum distance Dmin can also be given as
Answer :
Dmin >= α + β + 1
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