Q221
Open questionA source produces three symbols A, B and C with probabilities P(A) = , P(B) = and P(C) = . The source entropy is
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ECE · all questionsInformation Theory And Coding
Information Theory And Coding
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Q222
Open questionConsider a discrete memoryless source with source alphabet S = {s0, s1, s2} with probabilities P(s0) = , P(s1) = and P(s2) =
The entropy of the source is
The entropy of the source is
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Q223
Open questionAccording shanon-hartley law at no noise the channel capacity is going to be
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Q224
Open questionWhich of the following statements is correct?
S1: Channel capacity is the same for two binary symmetric channels with transition probabilities as 0.1 and 0.9.
S2: For a binary symmetric channel with transition probability 0.5, the channel capacity is 1.
S3: For AWGN channel with infinite bandwidth, channel capacity is also infinite.
S4: If Y = g(X), then H(Y) > H(X).
S1: Channel capacity is the same for two binary symmetric channels with transition probabilities as 0.1 and 0.9.
S2: For a binary symmetric channel with transition probability 0.5, the channel capacity is 1.
S3: For AWGN channel with infinite bandwidth, channel capacity is also infinite.
S4: If Y = g(X), then H(Y) > H(X).
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Q225
Open questionA source generates three symbols with probabilities 0.25, 0.25, 0.50 at a rate of 3000 symbols per second. Assuming independent generation of symbols, the most efficient source encoder would have average bit is
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Q226
Open questionSource encoding in a data communication system is done in order to
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Q227
Open questionA communication channel is having a bandwidth of 3000 Hz. The transmitted power is such that the received signal-to-noise ratio is 1023. The maximum data rate that can be transmitted t error-free through the channel is:
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Q228
Open questionIn a binary system, the symbols 0 and 1 occur with a probability of p0 and p1 respectively. The maximum value for entropy occurs when:
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Q229
Open questionConsider a binary memoryless channel characterized by the transition probability diagram shown in the figure.
The channel is
The channel is
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Q230
Open questionA random experiment has 64 equally likely outcomes. Find the information associated with each outcome.
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Q231
Open questionFor M equally likely messages, the average amount of information H is
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Q232
Open questionAn ideal power limited communication channel with additive white Gaussian noise is having 4 KHz band width and Signal to Noise ratio of 255. The channel capacity is:
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