| Paper: | WA-L3.1 |
| Session: | Image & Video Communication II |
| Time: | Wednesday, September 19, 09:50 - 10:10 |
| Presentation: |
Lecture
|
| Title: |
TRANSMISSION-DISTORTION TRADEOFFS IN NETWORK CHANNEL CODING |
| Authors: |
Shirish Karande; Michigan State University | | |
| | Hayder Radha; Michigan State University | | |
| Abstract: |
Network Channel Coding (NCC) is a framework under which intermediate router/nodes employ encoding/decoding operations to facilitate an efficient multicast delivery of video. The network usage and video distortion is a function of the channel coding rates assigned to nodes in the network. In this paper, we investigate the tradeoff between the total bandwidth usage and a global distortion measure. We propose a dynamic programming based framework to identify the optimal transmission-distortion operating points. The proposed optimal allocation of coding rates is compared with an earlier version of NCC, Network Embedded FEC (NEF), which optimally places codecs of a fixed channel coding rate within the network. The proposed NCC scheme is shown to achieve significantly improved transmission distortion tradeoffs. |
