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arXiv 0905.3934cs.ITmath.IT
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用于干扰信道中保密的协作编码

Cooperative encoding for secrecy in interference channels

O. Ozan Koyluoglu, Hesham El Gamal

摘要:

本文研究了存在外部窃听者时两用户干扰信道的基本性能极限。在这种情况下,我们构建了一个内界,保密容量区域的基础上,合作编码的思想,其中两个用户合作设计他们的随机码本,并共同优化他们的信道前缀分布。我们的可扩展性方案还利用消息分裂,以允许在非预期接收器的干扰的部分解码。外边界,然后推导出并用于建立在某些情况下的最优性的建议计划。在高斯的情况下,以前提出的合作干扰和噪声转发技术是我们所提出的方法的特殊情况。总体而言,我们的研究结果提供了关于如何利用干扰来提高无线网络保密能力的结构性见解。

英文摘要:

This paper investigates the fundamental performance limits of the two-user interference channel in the presence of an external eavesdropper. In this setting, we construct an inner bound, to the secrecy capacity region, based on the idea of cooperative encoding in which the two users cooperatively design their randomized codebooks and jointly optimize their channel prefixing distributions. Our achievability scheme also utilizes message-splitting in order to allow for partial decoding of the interference at the non-intended receiver. Outer bounds are then derived and used to establish the optimality of the proposed scheme in certain cases. In the Gaussian case, the previously proposed cooperative jamming and noise-forwarding techniques are shown to be special cases of our proposed approach. Overall, our results provide structural insights on how the interference can be exploited to increase the secrecy capacity of wireless networks.

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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