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arXiv 1808.08628cs.ITmath.IT
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UAV传输系统在掉话和干扰下的保密性能分析

Secrecy Performance Analysis of UAV Transmissions Subject to Eavesdropping and Jamming

Jinchuan Tang, Gaojie Chen, Justin P. Coon

摘要:

无人机(UAV)在军事和民用应用中提供了更广泛的信号覆盖和更广泛的监视能力,正在经历快速发展。由于无线信号的广播性质和空间的开放性,无人机窃听器(UEDs)对地面通信构成了潜在的威胁。在本文中,我们考虑了一个合法的地面链路中存在友好的干扰和UEDs在有限的空间区域内的通信。利用服从均匀二项点过程(BPP)的UED的空间分布来表征UED的随机性。假设地面链路经历对数距离路径损耗和瑞利衰落,而具有/不具有由于环境引起的平均额外路径损耗的自由空间路径损耗用于空对地/空对空链路。提出了一种分段函数来近似空-地链路的视距(LoS)概率,这比使用现有的基于S形的拟合提供了更好的近似。推导了非合谋UE存在时合法地面链路的安全连接概率(SCP)的解析表达式。分析揭示了一些有用的趋势,在SCP作为一个功能的发射信号干扰功率比,无人机干扰机的位置,和无人机的高度。

英文摘要:

Unmanned aerial vehicles (UAVs) have been undergoing fast development for providing broader signal coverage and more extensive surveillance capabilities in military and civilian applications. Due to the broadcast nature of the wireless signal and the openness of the space, UAV eavesdroppers (UEDs) pose a potential threat to ground communications. In this paper, we consider the communications of a legitimate ground link in the presence of friendly jamming and UEDs within a finite area of space. The spatial distribution of the UEDs obeying a uniform binomial point process (BPP) is used to characterize the randomness of the UEDs. The ground link is assumed to experience log-distance path loss and Rayleigh fading, while free space path loss with/without the averaged excess path loss due to the environment is used for the air-to-ground/air-to-air links. A piecewise function is proposed to approximate the line-of-sight (LoS) probability for the air-to-ground links, which provides a better approximation than using the existing sigmoid-based fitting. The analytical expression for the secure connection probability (SCP) of the legitimate ground link in the presence of non-colluding UEDs is derived. The analysis reveals some useful trends in the SCP as a function of the transmit signal to jamming power ratio, the location of the UAV jammer, and the height of UAVs.

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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