Packetized wavelet video coding and error control for receiver-driven layered multicast: an integrated approach

This paper proposes an integrated approach to receiver-driven layered multicast (RLM) based on packetized wavelet video (PWV) coding and error control. The PWV coder produces packetized layered bitstreams that are independent among layers while being embedded within each layer. Error control determines the optimal joint source-channel coding trade-off given the available transmission rate to mitigate the effects of packet loss. The PWV coder is designed to facilitate its integration with error control for RLM such that packets from different source layers are generated in a rate-distortion optimized way and a lost packet only renders the following packets in the same layer useless. Our work extends the single-layered approach in Chou et al., (2001). Theoretical analysis shows a gain of up to 1 dB on a channel with 20% packet loss over results presented in Chou. This gain is also substantiated by our simulations with a gain of up to 2.2 dB.