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arXiv 0908.3710cs.ITcs.CRmath.IT
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半双工双向高斯信道中的安全随机化

Randomization for Security in Half-Duplex Two-Way Gaussian Channels

Aly El Gamal, Moustafa Youssef, Hesham El Gamal

摘要:

本文提出了一种新的物理层框架,用于在存在被动窃听者的情况下进行安全的双向无线通信,即,节前夕我们的方法通过一种新的随机调度和功率分配方案实现完美的信息理论保密。关键思想是允许Alice和Bob在随机时刻发送符号。虽然爱丽丝将能够确定鲍勃发送的符号,但夏娃将遭受关于任何特定符号的来源的模糊性。在我们的方法中,通过随机化发射功率电平来增强这种期望的模糊度。我们的理论分析,在一个2-D的几何形状,揭示了所提出的方法,以实现相对较高的安全数据率在温和的条件下的空间位置的夏娃的能力。这些理论主张,然后验证实验结果使用IEEE 802.15.4启用传感器板在不同的配置,由无线体域网(WBAN)的空间特性的动机。

英文摘要:

This paper develops a new physical layer framework for secure two-way wireless communication in the presence of a passive eavesdropper, i.e., Eve. Our approach achieves perfect information theoretic secrecy via a novel randomized scheduling and power allocation scheme. The key idea is to allow Alice and Bob to send symbols at random time instants. While Alice will be able to determine the symbols transmitted by Bob, Eve will suffer from ambiguity regarding the source of any particular symbol. This desirable ambiguity is enhanced, in our approach, by randomizing the transmit power level. Our theoretical analysis, in a 2-D geometry, reveals the ability of the proposed approach to achieve relatively high secure data rates under mild conditions on the spatial location of Eve. These theoretical claims are then validated by experimental results using IEEE 802.15.4-enabled sensor boards in different configurations, motivated by the spatial characteristics of Wireless Body Area Networks (WBAN).

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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