具有机会调度的综合卫星地面中继系统的保密性能

K. Guo, K. An, Xiaogang Tang
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引用次数: 6

摘要

研究了考虑多个合法地面用户和多个窃听者的综合卫星地面中继系统(isrs)中机会用户调度方案对安全传输的影响。为了获得最佳保密性能,采用机会调度方案选择信噪比最优的地面用户接收信号。此外,本文还考虑了两种具有代表性的窃听案件,即案例一为串通案件;第二种情况,即非串通情况,选择信噪比最大的窃听者监听合法用户的信道。在此基础上,给出了基于给定调度方案的两种典型窃听事件间保密中断概率(SOP)的封闭表达式。为了在高信噪比条件下得到进一步的结果,还推导了两种情况下的近似SOP表达式。最后给出了一些有意义的蒙特卡罗(MC)仿真结果,验证了理论结果的正确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Secrecy Performance for Integrated Satellite Terrestrial Relay Systems with Opportunistic Scheduling
This paper investigates the impact of opportunistic user scheduling scheme on the secure transmission for the integrated satellite terrestrial relay systems (ISTRS), where multiple legitimate terrestrial users and multiple eavesdroppers are concerned in the system. In order to obtain the best secrecy performance, the terrestrial user with the optimal signal-to-noise ratio (SNR) is selected by employing opportunistic scheduling scheme to receive the signal. In addition, this paper considers two representative eavesdropping cases, i.e., Case I which is shown as the colluding case; the eavesdroppers work together and overhear the main channel, and Case II, which is called by non-colluding case: the eavesdropper with the largest SNR will be selected to overhear the legitimate users' channel. Furthermore, we obtain the closed-form expression for the secrecy outage probability (SOP) relied on the given scheduling scheme between two representative wiretapping cases. In order to obtain further results in high SNR regime, approximate SOP expressions under both cases are also derived. At last, some meaningful Monte Carlo (MC) simulation results are given to show the correctness of the theoretical results.
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