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An Information Inequality and Evaluation of Marton's Inner Bound for Binary Input Broadcast Channels

机译:二进制输入广播频道的信息不等式和马尔顿内边界的评估

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摘要

We establish an information inequality concerning five random variables. This inequality is motivated by the sum-rate evaluation of Marton's inner bound for two receiver broadcast channels with a binary input alphabet. We establish that randomized time-division strategy achieves the sum rate of Marton's inner bound for all binary input broadcast channels. We also obtain an improved cardinality bound for evaluating the maximum sum rate given by Marton's inner bound for all broadcast channels. Using these tools we explicitly evaluate the inner and outer bounds for the binary skew-symmetric broadcast channel and demonstrate a gap between the bounds.
机译:我们建立了关于五个随机变量的信息不等式。这种不平等是由于对两个带有二进制输入字母的接收器广播频道的Marton内边界求和速率而引起的。我们建立了随机时分策略可以实现所有二进制输入广播频道的Marton内边界求和率。我们还获得了改进的基数界限,用于评估所有广播频道的Marton内界限给定的最大和速率。使用这些工具,我们可以显式评估二进制偏斜对称广播频道的内部和外部边界,并演示边界之间的差距。

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