硬件损伤条件下的中继网络性能分析  

Outage and Capacity Analysis of Opportunistic Relaying Network in Rayleigh Fading Channels with Hardware Impairments

作　　者：郭克锋[1] 陈瑾[1] 黄育侦[1] 刘念[1] 王学玲[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《电视技术》2015年第11期147-150,共4页Video Engineering

基　　金：国家自然科学基金项目(61301160)

摘　　要：物理层的损伤会造成系统性能的降低。主要分析基于机会中继选择策略下的中继网络。机会中继选择策略是中继节点的选择依靠所有信道的即时信息,选择其中最大的进行传输。得到了系统端到端中断概率的准确表达式以及遍历容量的近似表达式。公式的给出提供了快速计算具有硬件损伤的系统性能的方法。重点讨论了具有硬件损伤的中继系统和理想硬件系统的性能对比。给出了仿真的结果和必要的讨论来证明理论分析的正确性。Physical transceivers have hardware impairments that create distortions which degrade the performance of communication systems.The outage performance of the system is analyzed in opportunistic relaying network.Opportunistic relay selection is that the relay node is selected depending on the whole instantaneous channel information.Specifically,the exact closed-form expression for the outage probability and the approximate expression for the ergodic capacity of amplify-and-forward （AF） relaying network with hardware impairments are derived over Rayleigh fading channel,which provide a fast and efficient means to evaluate the impact of hardware impairments on the system performance.In addition,simulation results and intuitive discussions are provided to show the correctness of the analytical results.

关 键 词：中断概率 遍历容量 硬件损伤 机会中继选择策略 瑞利衰落信道 

分 类 号：TN94[电子电信—信号与信息处理]