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Mathematics, 25.06.2021 21:50 estebanmff
The number of
packets received at a router input during an interval of duration t seconds is modeled by a Poisson random variable. The probability of arriving k packets in the interval is
where parameter β is the packet arrival rate, measured in packets/second.
a)Write the equation of the probability density function of the random variable of Poisson
.
b)Show that the arrival time between packets T is in this case an exponential random variable and determine the value of the parameter.
c)If the packets arrive with an equal speed of 2048 kilobits/second and the packet size is equal to 1024 bits determine the value of β.
d)Determine the value of the duration t of the observation interval so that the probability of no packet arriving is greater than 0.9.
e)Determine the duration t value of the observation interval so that the probability of arriving at least one packet is greater than 0.9.
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