FEC-based scalable multiple description coding for overlay network streaming

We consider the problem of distributing video data from a server to a population of interested clients. Deploying overlay network with application-layer multicast, we propose a FEC-based scalable multiple description coding (SMDC) scheme to arrive at the solution to the problem. Without the performance penalty on each receiver, our SMDC can achieve optimal performance of each client with different network conditions as simply as additional assembling and truncating operations. In the mean time, a R-D allocation algorithm is presented to decide the rates of the source and channel. Simulation shows that our SMDC have better quality for heterogeneous receivers than traditional scheme.