摘要
针对齐次泊松点过程下异构蜂窝网络的能量效率进行了研究。利用齐次泊松点过程对异构蜂窝网络进行建模;然后在瑞利信道环境下给出了系统的覆盖率和可达速率的表达式,并且推导了能量效率的闭合形式的表达式;通过凸优化算法对微基站密度进行优化,使网络能量效率达到最大。仿真结果表明,微基站的密度对系统能量效率有着显著的影响,通过合理地设置微基站密度能有效提高系统的能量效率。
This paper researched the energy efficiengy of heterogenous cellular networks in homogenous Poisson point process.Firstly,it modeled the heterogenous cellular networks by using homogenous Poisson process. Secondly,it derived the expression of system’s coverage probability and achievable rata in Rayleigh channel situations,and deduced the expression of energy efficiency’s closed form. Finally,it optimized the density of micro-base station via convex-optimum method in order to maximize networks’ energy efficiency. The simulation results show that micro-base station’s density has significant effects on system’s energy efficiency. Its essence is through reasonable setting of micro-base station’s density to available help improve its efficiency.
作者
赵拓
杨洁
曹雪虹
Zhao Tuo;Yang Jie;Cao Xuehong(College of Communication & Information Engineering,Nanjing University of Posts & Telecommunications,Nanjing 210003,China;School of Communication Engineering,Nanjing Institute of Technology,Nanjing 211167,China)
出处
《计算机应用研究》
CSCD
北大核心
2019年第1期179-182,共4页
Application Research of Computers
基金
国家自然科学基金资助项目(61401225
61701221)
江苏省自然科学基金资助项目(BK20160781
BK20140894)
江苏省高校自然科学基金项目(16KJB510013
16KJB510038)
关键词
异构蜂窝网络
齐次泊松点过程
能量效率
覆盖率
可达速率
heterogeneous cellular networks
homogeneous Poisson point process
energy efficiency
coverage probability
achievable rata
