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In this paper, an error resilience scheme based on H.264/AVC progressive image transmission over wireless fading channels is proposed. The source coding approach is based on data partitioning (DP) defined in H.264 standard. DP units with unequal important data are applied optimal channel code allocation in terms of their importance, thus yielding a certain degree of error resilience. To overcome frequency selective fading of wireless channels and improve capacity of the system, OFDM system using space-time block coding (STBC) is considered. Simulation results show that the scheme can obviously improve the error resilience compared to the scheme without DP, especially when the channel is in bad condition; the performance of the scheme with higher spatial diversity gains is better than the scheme with lower spatial diversity gains.
Date of Conference: 20-22 Dec. 2008