Joint Source -Channel Video Transmission
Leiming Qian · 2001
With the rapid growth of multimedia content in today's communication links, there is an increasing demand for e#cient image and video transmission systems. Various research work has shown that significant gain in transmission performance can be achieved from the application of joint source-channel matching (JSCM) techniques, which maximize the final end-to-end performance by optimally allocating limited system resources (transmission power, channel capacity, etc.) between the source and channel coders. This thesis investigates the application of JSCM to video transmission associated with the following three di#erent types of communication channels: 1. Peer transmission: an adaptive matching technique, based on our earlier work of general source-channel matching techniques using parametric modeling, is presented for the case of direct point-to-point video transmission with a reliable feedback channel. 2. Broadcasting: based on the JSCM principle developed for the previous case of peer transmission, this thesis proposes an alternative performance criterion under the name of minimax disappointment (MD) for a multireceiver broadcasting scenario, where feedback channels do not exist. 3. Network transmission: assuming a network consisting of multiple video senders and receivers, this thesis presents a joint source-network matching (JSNM) transport layer protocol for video transmission. The JSNM protocol is complete with a custom packet format, a congestion-control algorithm which is Transmission Control Protocol (TCP) friendly, and built-in loss-and-error control mechanisms for both packet loss due to congestion and packet corruption due to wireless fading. iii The e#ectiveness of the proposed JSCM techniques, MD optimization criterion and JSNM transport protocol is ill...