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An improved rate region for the classical-quantum broadcast channel (1501.07417v1)
Published 29 Jan 2015 in quant-ph, cs.IT, and math.IT
Abstract: We present a new achievable rate region for the two-user binary-input classical-quantum broadcast channel. The result is a generalization of the classical Marton-Gelfand-Pinsker region and is provably larger than the best previously known rate region for classical-quantum broadcast channels. The proof of achievability is based on the recently introduced polar coding scheme and its generalization to quantum network information theory.