Abstract：A novel multiple description coding framework

called layered based multiple description coding(LBMDC)

is proposed in this paper to meet the requirement of unreliable network transmission. The two-description coding scheme is proposed from SNR scalable layer coding

each description has a base layer and an enhancement layer. The base layer is composed of key information of coefficients and duplicated into both descriptions. The enhancement layer is the rest part of coefficients and split into two parts then sent to separate descriptions

respectively. Thus

the key information of the image is well protected. Even in the condition that one of descriptions is lost

the quality of restructured image is still good. Experimental results have verified the performance of the proposed MDC framework

which improves the ability of error resilient as well as the coding efficiency.