硬件损伤条件下的双向单中继网络性能分析  

Outage Analysis of Two-Way Single Relay Network with Hardware Impairments

作　　者：沈忠良[1] 郭克锋[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：《通信技术》2016年第9期1197-1201,共5页Communications Technology

基　　金：国家自然科学基金(No.91338201)~~

摘　　要：相位噪声、I/Q支路不均衡和高功率放大下的非线性等原因会导致系统硬件损伤,而传输系统的硬件损伤会引起系统性能的损失。本文主要分析硬件损伤条件下的双向单中继网络的系统性能,所考虑的系统的所有节点都具有硬件损伤。在此基础上得到系统中断概率精确解和高信噪比下的渐近解、理论解和渐近解,客观展示了硬件损伤对系统性能的影响。同时,通过仿真验证了理论解的正确性,进一步验证了硬件损伤对系统性能的影响。Phase noise, I/Q imbalance, and nonlinearity in HPA（high-power amplifier） condition could cause hardware impairments, and the hardware impairments of transmission system may result in great impact on system performance. The impact of hardware impairments in a two-way AF（amplify-and-forward） network is analyzed, with all the system nodes considered having hardware impairments. Based on this, the exact closed-form expression and approximate expression for the outage probability of the system are derived, thus to provide a fast means to evaluate the impact of hardware impairments. In addition, simulation results indicate the correctness of analytical results.

关 键 词：双向单中继网络 硬件损伤 中断概率 系统性能 

分 类 号：TN911[电子电信—通信与信息系统]