Information Theory And Coding - Study Mode
[#86] A linear Hamming code is used to map 4-bit messages to 7-bit codewords. The encoder mapping is linear. If the message 0001 is mapped to the codeword 0000111, and the message 0011 is mapped to the codeword 1100110, then the message 0010 is mapped to
Correct Answer
(D) 1100001
(F) 1100001
[#87] The unit of average mutual information is
Correct Answer
(A) Bits
[#88] The method of converting a word to stream of bits is called as
Correct Answer
(B) Source coding
[#89] A discrete source emits four symbols with probabilities $$frac{1}{3},,frac{1}{3},,frac{1}{4}$$ xa0 and $$frac{1}{{12}}$$ every 100 µs. The information rate is:
Correct Answer
(C) 18.55 Kbits/sec
[#90] The channel capacity of an ideal AWGN channel with infinite bandwidth is approximated as (where S is average signal power and $$frac{eta }{2}$$ is the double sided power spectral density of white Gaussian noise)
Correct Answer
(A) $$1.44frac{{ ext{S}}}{eta }{ ext{b/s}}$$