In many protocols, repeated failures result in remedial action, which may mean kicking the process to a higher level in the protocol hierarchy. Under the assumptions of Exercise 2.5(a), what is the probability that there are
(a) Exactly two retransmissions
(b) More than two retransmissions?
Exercise 2.5
In a block of 1024 bits using error-correcting codes, single-bit errors can be corrected; all other error patterns can be detected.
(a) If Pe = 10-4 and bit errors are independent, what is the probability of retransmission?
(b) Plot the probability of block retransmission as a function of bit error probability.
(c) Now suppose that up to two errors can be corrected; repeat (b) on the same chart.
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