ee555hw3fall2007 - EE555"Broadband Networks Architecture...

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1 EE555: "Broadband Networks Architecture" Professor A. Zahid, Fall Semester 2007 HW#3: Due Friday, October 5 1. Consider the 3-stage space switch with N = 16, n = 4 and k = 2 a) What is the maximum number of connections that can be supported at any given time? b) For a given set of input-output pairs, Is there more than one way to arrange the connections over the this switch c) Now assume that N = 32. Compare the number of crosspoints required by a non-blocking switch with n = 16, n = 8, n = 4, and n = 2 cases 2. Consider the 3-stage space switch. An input line is busy 10% of the time. a) Estimate the percent of time "p" that a line between the first and the second stage is busy. How do "n" and "k" affect "p"? How does this "p" affect the blocking performance of the intermediate crossbar switch? b) For a given input and output line, what is the probability that none of the N/n paths between the input and output lines are available? 3. Design a shared memory switching system that supports a time-multiplexed
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This note was uploaded on 12/21/2010 for the course EE 555 taught by Professor Silvester during the Spring '08 term at USC.

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ee555hw3fall2007 - EE555"Broadband Networks Architecture...

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