1. A Robust Luby Transform Encoding Pattern-Aware Symbol Packetization Algorithm for Video Streaming Over Wireless Network Dongju Lee and Hwangjun Song IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 13, NO. 4, AUGUST 2011 1

2. Outline Introduction LT Encoding Pattern-Aware Symbol Relationship Analysis Packetization Algorithm of LT Encoded Symbols Performance Analysis Experimental Results Conclusion 2

3. Introduction To minimize the quality degradation of video streaming service caused by packet losses over wireless network. Minimize packet loss effects by reducing the dependency among packets conveying Luby transform encoded symbols. The LT decoding success rate can be improved at the receiver by minimizing the effect of a lost packet. 3

4. Introduction 4

5. LT Encoding Pattern-Aware Symbol Relationship Analysis 5

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7. Packetization Algorithm of LT Encoded Symbols 7

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11. Packetization Algorithm of LT Encoded Symbols 11

12. Performance Analysis 12

13. Performance Analysis 13

14. Experimental Results-setup Implemented by using Java and C/C++. H.264/AVC JM Software is used as a video codec. Test video sequences ： Harbour and Soccer of CIF size and 15 fps. The GOP structure is set to include one I-frame and 29 P-frames. Every simulation is repeated 1000 times and averaging values of the repeated simulations LT codes ： robust soliton distribution and two parameters of this degree probability distribution are set to 0.03 and 0.5, respectively 14

15. Performance Verification of the Proposed Packetization Algorithm 15

16. Performance Verification of the Proposed Packetization Algorithm 16

17. Performance Verification of the Proposed Packetization Algorithm 17

18. Performance Verification of the Proposed Packetization Algorithm 18

19. Video Quality Comparison When Packet Loss Pattern Is Random 19

20. Video Quality Comparison When Packet Loss Pattern Is Random 20

21. Video Quality Comparison When Packet Loss Pattern Is Random 21

22. Video Quality Comparison When Packet Loss Pattern Is Burst 22

23. Video Quality Comparison When Packet Loss Pattern Is Burst 23

24. Video Quality Comparison When Packet Loss Pattern Is Burst 24

25. Video Quality Comparison When Packet Loss Pattern Is Burst 25

26. Video Quality Comparison When Packet Loss Pattern Is Burst 26

27. Conclusion An efficient LT encoding pattern-aware packetization algorithm for LT encoded symbols to provide a robust video streaming service over error-prone wireless network. The basic concept of the proposed packetization algorithm may be extended to other fountain codes with some modifications. 27