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Error-correction on non-standard communication channels Heledd Bryn Parri A collection of portraits byMany communication systems are poorly modelled by the standard channels assumed in the information theory literature, such as the binary symmetric channel or the additive white Gaussian noise channel. Real systems suffer from additional problems including time varying noise, cross talk, synchronization errors and latency constraints. In this book, low density parity check codes and codes related to them are introduced and applied to non standard