摘要
随着物联网技术的发展,移动无线传感器协作网络成为了研究热点。但是由于信道的开放性,移动无线传感器协作网络的性能研究较为复杂。在N-Nakagami信道下,建立了移动无线传感器协作网络模型,设计了两种发射天线选择(Transmit Antenna Selection,TAS)方案,研究了移动无线传感器协作网络的中断概率(Outage Probability,OP)性能。移动无线传感器协作网络采用放大转发策略,针对最佳TAS方案和次最佳TAS方案,分别推导了系统中断概率的闭合表达式。然后,通过不同条件的Monte-Carlo仿真,验证了系统的中断概率性能。仿真结果表明理论值很好的拟合了Monte-Carlo仿真值,其正确性得到了验证;增加发射天线数可以很好的改善系统的中断概率性能。
With the development of the internet of things technology,the mobile wireless sensor cooperative network has become a hot issue of academic researches. Due to the openness of wireless channels,the performance research of the mobile wireless sensor cooperative network is very complicated. In this work,based on N-Nakagami channels,we establish the model of the mobile wireless sensor cooperative network,propose two transmit antenna selection(TAS)schemes,and investigate the outage probability(OP)performance. The amplify-and-forward(AF)relaying protocol is used in the mobile wireless sensor cooperative network,and the exact closed-form expressions for OP of the optimal and suboptimal TAS schemes are derived,respectively. Then,through Monte-Carlo simulations,we verify the OP performance under different conditions. Simulation results show that the analytical results match perfectly with the Monte-Carlo simulation results,the OP performance is improved with the increase of the number of transmit antennas.
作者
王涵
杜文才
万倩倩
WANG Han;DU Wencai;WAN Qianqian(College of Physical Science & Engineering,Yichun University,Yichun 336000,China;Institute of Data Science,City Universityof Macao,999078,China;The Weapon Industry Institute of Computer Application Technology,Beijing 100089,China)
出处
《传感技术学报》
CAS
CSCD
北大核心
2020年第2期293-298,共6页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(61901409)。
关键词
无线传感器网络
协作通信
中断概率
发射天线选择
wireless sensor network
cooperative communication
outage probability
transmit antenna selection
