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arXiv 2104.13583cs.ITmath.IT
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用于全双工干扰攻击的非相干快速转发中继

Non-Coherent Fast-Forward Relays for Full-Duplex Jamming Attack

Vivek Chaudhary, J. Harshan

摘要:

本文提出了一种在快衰落信道条件下,抑制全双工(FD)攻击者对低延迟通信的干扰攻击的策略。威胁模型是这样的,即FD对手可以干扰频带并测量被干扰频带的功率电平。我们首先指出,由于这个FD对手的存在,跳频(FH)失败。然后,我们提出了一个快速转发的合作中继方案,其中受害者节点跳到附近的FD助手节点的频带,快速转发受害者的符号连同其符号。与此同时,受害者和帮助者合作,将他们的一部分能量注入被干扰的频段,以与对手交战。由于快衰落信道条件,受害者和帮助者使用基于幅度的非相干信令,称为非相干快速转发全双工(NC-F2 FD)中继。为了最大限度地减少这种策略的错误率,我们共同设计的星座在帮助节点和受害者节点制定一个优化问题。使用非平凡的结果,我们首先分析的目标函数,然后,基于分析结果,提出了一个低复杂度的算法来合成的快进星座。通过仿真,我们表明,受害者的错误性能改善后,采用我们的对策。

英文摘要:

This work addresses a strategy to mitigate jamming attack on low-latency communication by a Full-Duplex (FD) adversary in fast-fading channel conditions. The threat model is such that the FD adversary can jam a frequency band and measure the jammed band's power level. We first point out that due to the presence of this FD adversary, Frequency Hopping (FH) fails. We then propose a fast-forward cooperative relaying scheme, wherein the victim node hops to the frequency band of a nearby FD helper node that fast-forwards the victim's symbol along with its symbol. At the same time, the victim and the helper cooperatively pour some fraction of their power on the jammed band to engage the adversary. Due to fast-fading channel conditions, the victim and the helper use amplitude based non-coherent signalling referred to as Non-Coherent Fast-Forward Full-Duplex (NC-F2FD) relaying. To minimize the error-rate of this strategy, we jointly design the constellations at the helper node and the victim node by formulating an optimization problem. Using non-trivial results, we first analyse the objective function and then, based on the analytical results, propose a low-complexity algorithm to synthesize the fast-forwarded constellations. Through simulations, we show that the error performance of the victim improves after employing our countermeasure.

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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