Question

3. The channel bit error rate is 0.00001, and each packet’s total length is 1024 bytes including all overheads. Assume there are no other overheads. For each data packet transmitted over the wireless channel, what is the Packet Error Rate (PER) for each single round of packet delivery? If one ARQ retry is applied, (i.e. total rounds of transmissions are 2, including 1 initial transmission, and 1 additional retry), what is the final average probability of packet error? (1 point)

Answer 1

Answer:

The answer is 0.08192%.

Explanation:

1 byte consists of 8 bits so for a total packet length of 1024 bytes, there are 8192 bits. The channel has a bit error rate of 0.00001 or 0.001%.

For each data packet transmitted with no overhead, the packet error rate (PER) would be 0.0008192 or 0.08192%. for each single round of packet delivery.

I hope this answer helps.

Answer 2

Answer:

Check the explanation

Explanation:

1)

Given, the channel bit error is 000001. And length of the byte is 1024 bytes. Therefore, 1024 X 000001 = 01024 or 1 024% of packets Error Rate be corrupted.  

2)

Using of those 1024% of corrupt packets that have a rehash, 1 024% of the rehash packets will also fail.

         Meaning that $0.01024^2$, packets will fail even with the rehash  

This is $0.01024^2$ = 0.0001048576 or 0 0105% (approx) will miscarry with a single retry.