The shotgun cellular systems (SCSs) (modeling, generally, a dense cellular or wireless data network deployment and non-ideal regular hexagonal grid with site-acquisition difficulties, variable traffic load) are wireless communication systems with randomly placed base stations (BSs) over the entire plane according to a stochastic (e.g., Poisson) point process in n dimensions (n = 1, 2, and 3). Due to the good performance and the importance of the SCSs in today’s communications, the physical layer security of these systems is practically of importance, specifically, in more realistic channel propagation models. In this paper, by assuming that the channel coefficients are known at the receiver, we analyze the performance of the physical layer security for the classic Wyner’s three-node model in the SCSs over correlated/independent log-normal shadow fading channels. For this purpose, first, we calculate the signal-to-interference-plus-noise ratio (SINR) performance at a mobile station (MS) in an SCS. Then, the average secrecy capacity (ASC), the probability of non-zero secrecy capacity (PNSC), the secure outage probability (SOP), and the lower bound of SOP (LSOP) are obtained, and also, their approximated closed-form expressions are derived. Finally, analytical results are validated numerically.

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相关/独立阴影衰落信道上shot弹枪蜂窝系统中的物理层安全性

gun弹式蜂窝系统（SCS）（通常建模为密集的蜂窝或无线数据网络部署，并且存在站点获取困难，流量负载可变的非理想规则六边形网格）是无线通信系统，其上随机放置基站（BS）根据随机（例如，泊松）点过程在n个维度（n= 1、2和3）。由于SCS的良好性能和在当今通信中的重要性，这些系统的物理层安全性实际上非常重要，特别是在更现实的信道传播模型中。在本文中，通过假设接收器处的信道系数已知，我们分析了相关/独立对数正态阴影衰落信道上SCS中经典Wyner三节点模型的物理层安全性能。为此，首先，我们在SCS中计算移动台（MS）的信号干扰加噪声比（SINR）性能。然后，获得平均保密容量（ASC），非零保密容量的概率（PNSC），安全中断概率（SOP）和SOP的下限（LSOP），并且，推导它们的近似封闭形式表达式。最后，对分析结果进行数值验证。