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In this paper, we present a near-lossless compression scheme for scalar-quantized source codec parameters based on iterative source-channel decoding (ISCD). The scheme is comparable to a Turbo source encoder and can inherently incorporate protection against transmission errors. In order to realize a close-to-capacity transmission/compression scheme, we employ irregular redundant bit mappings and irregular...
The rate distortion function is a widely used theoretical bound which describes the minimum mean square error (MMSE) distortion for a given number of quantization bits when quantizing a scalar random variable. An analytical solution for this function is only available for a small number of probability density functions (pdf), such as the Gaussian pdf. For arbitrary pdfs, the Blahut-Arimoto algorithm...
The FlexCode project is a joint research project of KTH Stockholm, RWTH Aachen University, Ericsson AB, Nokia, and Orange/France Telecom under the umbrella of the sixth framework programme of the European Commission (http://www.flexcode.eu). In this paper we present the generic channel coding platform developed within the FlexCode project. This channel encoder provides iterative source-channel decoding...
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