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arXiv 1109.0696cs.ITmath.IT
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带边信息的数模混合安全传输方案

Hybrid Digital/Analog Schemes for Secure Transmission with Side Information

Joffrey Villard, Pablo Piantanida, Shlomo Shamai

摘要:

最近的结果信源信道编码的安全传输表明,分离举行在一些情况下,在一些较少的噪声条件。然而,通过一个简单的反例也证明了纯模拟方案可以是最佳的,因此优于数字方案。根据这些观察和假设匹配的带宽,我们提出了一种新的混合数字/模拟方案,旨在收集数字和模拟的优点。在二次高斯设置时,边信息只存在于窃听,该策略被证明是最优的。此外,它优于数字和模拟方案,并且不能通过分时实现。最后给出了一个应用于带边信息的对称信源的例子。

英文摘要:

Recent results on source-channel coding for secure transmission show that separation holds in several cases under some less-noisy conditions. However, it has also been proved through a simple counterexample that pure analog schemes can be optimal and hence outperform digital ones. According to these observations and assuming matched-bandwidth, we present a novel hybrid digital/analog scheme that aims to gather the advantages of both digital and analog ones. In the quadratic Gaussian setup when side information is only present at the eavesdropper, this strategy is proved to be optimal. Furthermore, it outperforms both digital and analog schemes and cannot be achieved via time-sharing. An application example to binary symmetric sources with side information is also investigated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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