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Cooperative Resolvability and Secrecy in the Cribbing Multiple-Access Channel

机译:捕获多址通道中的合作可解弊和保密性

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摘要

We study channel resolvability for the discrete memoryless multiple-access channel with cribbing, i.e., the characterization of the amount of randomness required at the inputs to approximately produce a chosen i.i.d. output distribution according to Kullback-Leibler divergence. We analyze resolvability rates when one encoder cribs (i) the input of the other encoder; or the output of the other encoder, (ii) non-causally, (iii) causally, or (iv) strictly-causally. For scenarios (i)-(iii), we exactly characterize the channel resolvability region. For (iv), we provide inner and outer bounds for the channel resolvability region; the crux of our achievability result is to handle the strict causality constraint with a block-Markov coding scheme in which dependencies across blocks are suitably hidden. Finally, we leverage the channel resolvability results to derive achievable secrecy rate regions for each of the cribbing scenarios under strong secrecy constraints.
机译:我们研究了用于分离的离散的无记忆多址通道的信道解析,即,输入输入到所选的I.i.d所需的随机性量的表征。根据Kullback-Leibler发散的输出分布。当一个编码器婴儿床(i)输入另一个编码器的输入时,我们分析了解析速率;或其他编码器的输出,(ii)非因果性,(iii)严格导致或(iv)。对于场景(i) - (iii),我们恰好表征了通道解析性区域。对于(iv),我们为通道解析区域提供内部和外界;我们取得的成就结果的关键是处理严格的因果关系,与块 - 马尔可夫编码方案,其中跨块的依赖性适当地隐藏。最后,我们利用频道解析性导致导致的频道可实现的秘密率区域,以获得强烈的保密限制下的每个备注方案。

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