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(d) log m bits/symbol<br />
6. Theencoderofa(7,4)systematiccyclicencoderwithgeneratingpolynomialg(x)=1+x2 +x3 Is<br />
basically a<br />
(a) 11stageshiftregister<br />
(b) 4stageshiftregister<br />
(c) 3stageshiftregister<br />
(d) 22stageshiftregister<br />
7. A channel with independent input and output acts as<br />
(a) Gaussian channel<br />
(b) channel with maximum capacity<br />
(c) lossless network<br />
(d) resistive network<br />
8. A system has a bandwidth of 4 KHz and an S/Nratio of 28 at the input to the Receiver.If<br />
the bandwidth of the channel is doubled, then<br />
(a) S/N ratio at the input of the received gets halved<br />
(b) Capacity of the channel gets doubled<br />
(c) S/N ratio at the input of the received gets doubled<br />
(d) Capacity of the channel gets squared<br />
9. A source is transmitting four messages with equal probability. Then, for optimum Source<br />
coding efficiency.<br />
(a) necessarily, variable length coding schemes should be used<br />
(b) Variable length coding schemes need not necessarily be used<br />
(c) Convolutional codes should be used<br />
(d) Fixed length coding schemes should not be used<br />
10. The maximum average amount of information content measured in bits/sec associated<br />
with the output of a discrete Information source transmitting 8 messages and 2000<br />
messages/sec is<br />
(a) 16Kbps<br />
(b) 4Kbps
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