摘要
无线通信系统中,多用户调度能够有效提高系统频谱的利用效率和吞吐量,从无线通信的物理层安全角度出发,分析了多用户调度在无线通信网络中安全性能,考虑了一种最坏通信场景,即窃听者不但从普通用户而且也从中继节点来窃听被传送的信息,在此基础上提出了一种有效的用户调度算法并得到理论表达式,最后通过仿真实验来分析安全中断概率和信息传输速度以及传输能量的关系,仿真结果表明:该理论表达式的正确性即理论表达式与蒙特卡罗仿真一致;改进的调度方法相对传统的多用户轮询调度方式有显著的优点,降低了通信系统的安全中断概率,有效提高了系统的通信安全。
In wireless communication systems, multi-user scheduling can improve thespectrum utilization efficiency and system throughput.In this paper,a proposed scheduling scheme is studied on the basis of physical layer security, and a worst communication scenario is considered,i.e.the unauthorized receiver eavesdrops not only from users but also from the relay node.The simulation results show the correctness of the theoretical expression,i.e.the expression is consistent with Monte Carlo simulation;and as compared with the traditional polling scheme, the proposed scheme achievesa lower outage probability of the communication system, and effectively improves the security of the system.
作者
冯友宏
曹喜珠
王韦刚
丁绪星
王再见
王启蒙
FENG You-hong CAO Xi-zhu WANG Wei-gang DING Xu-xing WANG Zai-jian WANG Qi-meng(College of Physics and Electronic Information, Anhui Normal University,Wuhu Anhui 241000, China College of Electronic Science and Engineering,Nanjing University of Posts and Telecommunications,Nanjing Jiangsu 210003,China)
出处
《无线电通信技术》
2017年第1期35-38,80,共5页
Radio Communications Technology
基金
国家自然科学基金项目(61671252
61401004)
江苏省2015年高校研究生科研创新计划项目(KYLX15_0833)
关键词
物理层安全
安全的中断概率
多用户调度
physical layer security
security outage probability
multi-user scheduling