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Ergodic Secrecy Capacity Analysis of Multiuser Hybrid Satellite-Terrestrial Relay Networks with Multiple Eavesdroppers

机译:具有多个窃听者的多用户混合卫星-地面中继网络的遍历保密能力分析

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In this paper, we analyze the physical layer security performance of a downlink multiuser hybrid satellite-terrestrial relay network (HSTRN). where a multi-antenna satellite communicates with the best selected terrestrial user via an amplify-and-forward relay in the presence of multiple eavesdroppers. Particularly, we investigate the ergodic secrecy capacity (ESC) performance of the considered network by adopting Shadowed-Rician fading for the satellite link and Nakagami-m fading for the terrestrial links. More importantly, we carry out the ESC performance analysis under two wiretapping scenarios, viz., noncolluding and colluding eavesdroppers, by making use of moment generating function transform. Numerical and simulation results elucidate the accuracy of our theoretical findings and highlight the impact of various system/channel parameters an the secrecy performance of the considered HSTRN.
机译:在本文中,我们分析了下行链路多用户混合星地中继网络(HSTRN)的物理层安全性能。多天线卫星在存在多个窃听者的情况下,通过放大转发中继与最佳选择的地面用户进行通信。特别是,我们通过对卫星链路采用阴影阴影-里斯衰落和对地面链路采用Nakagami-m衰落来研究所考虑网络的遍历保密能力(ESC)性能。更重要的是,我们利用矩生成函数变换,在两种窃听场景下,即非串扰和串扰窃听者中进行了ESC性能分析。数值和仿真结果阐明了我们理论发现的准确性,并强调了各种系统/通道参数的影响以及所考虑的HSTRN的保密性能。

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