摘要
研究无线Ad Hoc网络容量的文章中,往往不会考虑如何抑制干扰信号功率,使得网络容量的提高受到很大限制。使用随机几何对无线Ad Hoc网络进行建模,研究空间进度密度这一容量定义,提出在无线Ad Hoc网络中通过设置保护区域的方式来抑制干扰信号功率,推导了网络的空间进度密度的近似值和上下界的理论表达式。理论分析与仿真结果说明,中断概率和空间进度密度的近似值和上下界能够很好地逼近仿真值。设置保护区域能够降低无线Ad Hoc网络中的干扰信号功率,提高空间进度密度;保护区域半径的大小决定了抑制干扰信号功率的强弱。
In the study of the capacity of wireless Ad Hoc networks, the network capacity is difficult to increase for how to reduce the power of interference is often not considered. In this paper, stochastic geometry is used to build the wireless Ad Hoc networks model, the spatial density of progress is studied, guard zone is set in wireless Ad Hoc networks to reduce the power of interference, and gave the theoretical expressions of the approximation, bounds and optimum radius of guard zone for the spatial density of progress. Theoretical analysis and simulation result show that, the approximation and bounds of outage probability and spatial density of progress are close to the simulation value, guard zone could reduce the power of interference in wireless Ad Hoc networks, and increase the spatial density of progress.
出处
《电视技术》
北大核心
2015年第21期82-86,共5页
Video Engineering
基金
国家自然科学基金项目(61271257)
教育部博士点基金(20120005110007)
关键词
AD
HOC
传输容量
最优半径
保护区域
Ad Hoc
spatial density of progress
optimum radius
guard zone
