Problem 4 alice sends a message to bob using an unreliable...

Name: problem 4 alice sends a message to bob using an unreliable text messaging app the message contains an error detection code so that bob can detect whether the message was received in error if 74998
Uploaded: 2023-02-16T20:19:58-08:00
Duration: 2 min 30 s
Channel: Ahmet Yavas
Description: problem 4 alice sends a message to bob using an unreliable text messaging app the message contains an error detection code so that bob can detect whether the message was received in error if 74998

Problem 4 Alice sends a message to Bob using an unreliable text messaging app. The message contains an error detection code so that Bob can detect whether the message was received in error. If an error is detected, Bob asks Alice to retransmit the message. If the probability of receiving a message in error is 0.1 , what is the probability that the message must be transmitted more than 5 times?

12. Alice is trying to communicate with Bob, by sending a message (encoded in binary) across a channel. (a) Suppose for this part that she sends only one bit (a 0 or 1), with equal probabilities. If she sends a 0, there is a 5% chance of an error occurring, resulting in Bob receiving a 1; if she sends a 1, there is a 10% chance of an error occurring, resulting in Bob receiving a 0. Given that Bob receives a 1, what is the probability that Alice actually sent a 1? (b) To reduce the chance of miscommunication, Alice and Bob decide to use a repetition code. Again Alice wants to convey a 0 or a 1, but this time she repeats it two more times, so that she sends 000 to convey 0 and 111 to convey 1. Bob will decode the message by going with what the majority of the bits were. Assume that the error probabilities are as in (a), with error events for different bits independent of each other. Given that Bob receives 110, what is the probability that Alice intended to convey a 1?

Kaushal N.

Question

Please give Ace some feedback