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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
For the VoIP example in Section 7.3, we introduced an online procedure (exponential moving average) for estimating delay. In this problem we will
examine an alternative procedure. Let t i be the timestamp of the ith packet received; let ri be the time at which the ith packet is received. Let dn be our estimate of average delay after receiving the nth packet. After the first packet is received, we set the delay estimate equal to d1 = r1 – t1
a. Suppose that we would like dn = (r1 – t1 + r2 – t2 + . . . + rn – t n)/n for all n. Give a recursive formula for dn in terms of dn–1, rn, and t n
b. Describe why for Internet telephony, the delay estimate described in Section 7.3 is more appropriate than the delay estimate outlined in Part a.
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