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The authors propose a LDPC Convolutional Code ensemble together with an expanding-window message-passing decoder that asymptotically have anytime properties when used for streaming transmission on the binary erasure channel. They show analytically that the decoding erasure probability of these codes decays exponentially over decoding delay and determine the corresponding anytime exponents. For delay-sensitive real-time applications, e.g., control-over networks, communication reliability requirements are often in conflict with corresponding delay constraints. Such applications typically require interactive and causal communication where information/observations are periodically reported to a receiver/controller over a noisy channel; and in response, actions are determined and executed.
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