Content-adaptive packetization and streaming of wavelet video over IP networks
Journal on Image and Video Processing
Opportunistic decoding of unequal erasure protected partially-decodable scalable source
Proceedings of the 4th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
Unequal power allocation for JPEG transmission over MIMO systems
IEEE Transactions on Image Processing
Unequal erasure protection technique for scalable multistreams
IEEE Transactions on Image Processing
Journal of Visual Communication and Image Representation
Efficient JPEG2000 image transmission using RCPT codes based on channel operating regions
Journal of Mobile Multimedia
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We study joint source-channel coding systems for the transmission of images over varying channels without feedback. We consider the situation where the channel statistics are unknown to the transmitter and focus on systems that enable good performance over a wide range of channel conditions. We first propose a linear-time channel code rate selection algorithm for a hybrid transmission system that combines packetization of an embedded wavelet bitstream into independently decodable packets and forward error correction with a concatenated cyclic redundancy check/rate-compatible punctured convolutional (RCPC) channel coder. We then consider an extension of this hybrid system with additional Reed-Solomon (RS) coding across the packets and give a linear-time algorithm for the efficient selection of both the RS and RCPC code rates. Experimental results for a wireline/wireless link modeled as the combination of a packet erasure channel and a Rayleigh flat-fading channel showed that our schemes significantly outperformed the best previous forward error correction systems in many situations where the actual channel parameter values deviated from the ones used in the optimization of the source-channel rate allocation.