Decoder Buer Modeling and Simulation for End-to-End Transport of MPEG2 Video with ATM Network Jitter

In this paper, the operation of MPEG-2 decoder buer is modeled and simulated when a VBR MPEG2 stream is delivered through an ATM network with jit-ter. End-to-end packet based analysis is performed for delivery of MPEG-2 transport streams over ATM networks. A novel approach to analyzing the decoder buer in the presence of network jitter is given in this paper. The probability density function of the inter-arrival time of the ATM adaptation layer 5 (AAL5) Protocol data unit (PDU) is derived from a bit-rate model of the video source as well as a ATM network jitter model. Based on the decoding timing requirement of the MPEG-2 system target decoder, a simulation of the decoder buer is implemented. In the simulation, the transport stream packets arrivals follow the derived probability density function of the AAL5 PDU interar-rival time. The modeling and simulation results show that packet loss occurs for a given buer size, which happens when the TS packets arrive in burst because of network jitter