Coverage and Area Spectral Efficiency Analysis of Dense Terahertz Networks in Finite Region  

作　　者：Minwei Shi Xiaozheng Gao Anqi Meng Dusit Niyato 

机构地区：[1]School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China [2]School of Cyberspace Science and Technology,Beijing Institute of Technology,Beijing 100081,China [3]Engineering Center of Digital Audio and Video,Communication University of China,Beijing 100024,China [4]School of Computer Science and Engineering,Nanyang Technological University,Singapore 639798

出　　处：《China Communications》2021年第5期120-130,共11页中国通信（英文版）

基　　金：National Natural Science Foundation of China(No.61771054).

摘　　要：This paper develops a general and tractable framework for the finite-sized downlink terahertz(THz)network.Specifically,the molecular absorption loss,receiver locations,directional antennas,and dynamic blockage are taken into account.Using the tools from stochastic geometry,the exact expressions of the blind probability,signal-to-interference-plus-noise ratio(SINR)coverage probability,and area spectral efficiency(ASE)for the reference receivers and random receivers are derived.The upper bounds of the SINR coverage probability are also obtained by using the generalized dominant interferers approach.Numerical results validate the accuracy of our theoretical analysis and suggest that two or more dominant interferers are required to provide sufficiently tight approximations for the SINR coverage probability.We also show that densifying the finite terahertz networks over a certain density threshold will degrade the coverage probability while the ASE keeps increasing.Moreover,deploying more obstructions appropriately in ultra-dense THz networks will benefit both the coverage probability and ASE.

关 键 词：TERAHERTZ INTERFERENCE area spectral efficiency DENSIFICATION stochastic geometry 

分 类 号：TN929.5[电子电信—通信与信息系统]