In this problem, we will modify the communication system described in Exercise 2.46 so that the detector
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Pr (0 received | 0 transmitted) = 0.90, Pr (0 received | 1 transmitted) = 0.04,
Pr (1 received | 0 transmitted) = 0.01, Pr (0 received | 1 transmitted) = 0.80,
Pr (E received | 0 transmitted) = 0.09, Pr (0 received | 1 transmitted) = 0.16.
Again, assume that 0s and 1s are equally likely to be transmitted.
(a) What is the probability that a symbol is erased at the receiver?
(b) Given that a received symbol is declared an erasure, what is the probability that a 0 was actually transmitted?
(c) What is the probability of error of this receiver? That is, what is the probability that a 0 was transmitted and it is detected as a 1 or a 1 was transmitted and it is detected as a 0?
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Related Book For
Probability and Random Processes With Applications to Signal Processing and Communications
ISBN: 978-0123869814
2nd edition
Authors: Scott Miller, Donald Childers
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