基于三维空间模型的毫米波异构蜂窝网络性能分析
Performance analysis of millimeter wave heterogeneous cellular networks based on three dimensional space model
投稿时间:2018-10-16  修订日期:2018-10-17
DOI:
中文关键词: 异构蜂窝网络  毫米波  覆盖概率  随机几何
英文关键词: heterogeneous cellular networks  millimeter wave  coverage probability  stochastic geometry
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目),湖北省自然科学基金重点资助项目
作者单位E-mail
李中捷 中南民族大学 电子信息工程学院 智能无线通信湖北重点实验室 lizhongjie@mail.scuec.edu.cn 
林雅雄 中南民族大学 电子信息工程学院 LYX_12240@163.com 
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中文摘要:
      针对城市环境下异构基站密集分布情况,提出毫米波异构蜂窝网络的三维空间模型.该模型假设各层基站分布为三维泊松点过程,推导出三维空间下D球阻碍模型的路径损耗强度函数.基于该模型,采用最大偏置接收功率接入准则,收发端使用大规模天线阵列获得最大的波束成形增益,在Nakagami衰落信道下,推导出目标用户的覆盖概率表达式.通过蒙特卡洛仿真实验与二维空间模型的性能进行了对比,并分析了D球模型、偏置因子和天线增益等参数变化对覆盖概率的影响.实验结果表明,三维空间模型对毫米波异构蜂窝网络的性能分析更加精确.
英文摘要:
      Aiming at the dense distribution of heterogeneous base stations in urban environment,we propose a three-dimensional model of millimeter-wave heterogeneous cellular networks. This model assumes that the base stations of each layer are distributed as three-dimensional Poisson point processes, and intensity function for the D-ball path loss model in three-dimensional space is derived. Based on the model, the maximum bias received power access criterion is adopted, and the transmitters and the receiver uses a large array of antenna to obtain the maximum beamforming gain. Under the Nakagami fading channel, the coverage probability expression of the target user is derived. Via Monte Carlo simulation,we compare the performance of the proposed model with two-dimensional model and analyze the influence of parameter such as D-ball model, bias factor and antenna gain on coverage probability. Experimental results show that the performance of the three-dimensional space model for millimeter-wave heterogeneous cellular networks is more precise.
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