61. Entropy is basically a measure of:
62. If a block code is to have a t-error correction capability then the minimum distance dmin of the code should be such that
63. Channel capacity of Binary symmetric channel illustrated below is
64. Consider a binary transmission of bits 0 and 1 with equal probability. Bits are transmitted in a noisy channel and channel noise is additive in nature. The received signal is random in nature with conditional probability density function for each transmitted bit 0 and 1, respectively, as
fr/0(x) = 1 - |x||x| < 1
fr/0(x) = 1 - |x - 1| 0 < x < 2
What is the average probability of error if threshold in the decision device at the receiving end is 1?
fr/0(x) = 1 - |x||x| < 1
fr/0(x) = 1 - |x - 1| 0 < x < 2
What is the average probability of error if threshold in the decision device at the receiving end is 1?
65. Channel capacity is equal to
66. If a channel having bandwidth of 2 kHz and signal to noise ratio is zero dB. Maximum bit rate for this channel will be-
67. The capacity of a band-limited additive white Gaussian noise (AWGN) channel is given by $$C = W{\log _2}\left( {1 + \frac{P}{{{\sigma ^2}W}}} \right)$$ bits per second (bps), where W is the channel bandwidth, P is the average power received and σ2 is the one-sided power spectral density of the AWGN.
For a fixed $$\frac{P}{{{\sigma ^2}}} = 1000,$$ the channel capacity (in kbps) with infinite bandwidth $$\left( {W \to \infty } \right)$$ is approximately
For a fixed $$\frac{P}{{{\sigma ^2}}} = 1000,$$ the channel capacity (in kbps) with infinite bandwidth $$\left( {W \to \infty } \right)$$ is approximately
68. Which one of the following is correct?
69. For a fast communication which of the following requirements have to be met
70. The entropy of a digital source is 2.7 bits/symbol. It is producing 100 different symbols per second. The source is likely to be which one of the following
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