hw3 - et al from IEEE Transactions on Circuits and Systems...

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CIS 6930 Distributed Multimedia Systems, Fall 2011 Assignment 3 Out: Oct. 26 (Wednesday), 2011 Due: Beginning of the lecture on Nov. 02 (Wednesday), 2011 The problem sets form an important part of the learning in this course. Thus you are required to do them in order to pass. Try to be as clear and precise as possible in your presentation. It is recommended that you type the answers. No late assignments are accepted !! Problem 1 Obtain a MPEG-2 trace from the Internet. Find out the actual sizes of I-, P-, and B-frames from the trace. You need to report the maximum, average and minimum sizes of all three types of frames. Problem 2 Search and review the paper ”A Scalable MPEG-4 Wavelet-Based Visual Texture Compression System with Optimized Memory Organization” by B. Vanhoof and
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Unformatted text preview: et al from IEEE Transactions on Circuits and Systems for Video Technology, Vol. 13, No. 04, Apr. 2003. Please then write (with your own words) the ONE-PAGE summary of the paper. Problem 3 Two CSMA/CD stations are trying to transmit a few long video les. After each frame is sent, they contend for the channel using binary exponential back-o algorithm. What is the probability that the contention ends on round k, and what is the mean number of rounds per contention period? Please calculate rst few terms to get the approximated answer. Problem 4 Review the CSMA/CA-based 802.11 protocols for Wireless Local-Area Networks (WLAN). Ex-plain the dierences among 802.11a, 802.11b and 802.11g. Also explain the back-o algorithm with the 802.11 protocols....
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This note was uploaded on 11/30/2011 for the course CIS 6930 taught by Professor Staff during the Fall '08 term at University of Florida.

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