Joint source-channel coding for scalable video atomic bitstream by adaptive turbo code

摘要

Joint source and channel coding enables efficient transmission of embedded video bitstream over unreliable channels. In this paper, we propose an efficient technique for joint source and channel coding. The technique consists of motion compensated spatio-temporal wavelet decomposition fully scalable video coder and turbo coding. The scalable atomic bitstream is adapted with unequal error protection according to the relevance of the video quality layers in the scalable bitstream. The adaptive turbo code is used to switch between simple equal error protection and the proposed unequal error protection technique. Experimental results show that the proposed approach outperforms conventional forward error correction techniques at medium to low signal to noise ratio. It also significantly improves the performance of end to end transmission at all signal to noise ratios.