Uplink Interference and Performance Analysis for Megasatellite Constellation

被引:26
作者
Jia, Haoge [1 ,2 ]
Ni, Zuyao [3 ,4 ]
Jiang, Chunxiao [3 ,4 ]
Kuang, Linling [3 ,4 ]
Lu, Jianhua [1 ,2 ]
机构
[1] Tsinghua Univ, Dept Elect Engn, Beijing 100091, Peoples R China
[2] Tsinghua Univ, Beijing Natl Res Ctr Informat Sci & Technol, Beijing 100091, Peoples R China
[3] Tsinghua Univ, Tsinghua Space Ctr, Beijing 100091, Peoples R China
[4] Tsinghua Univ, Beijing Natl Res Ctr Informat Sci & Technol, Beijing 100091, Peoples R China
关键词
Satellites; Interference; Internet of Things; Uplink; Analytical models; Satellite constellations; Satellite antennas; Ergodic capacity; frequency reuse; intraconstellation interference; megaconstellation; SATELLITE; COMMUNICATION; CAPACITY;
D O I
10.1109/JIOT.2021.3104095
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Satellite communications play an important role in future Internet of Things (IoT) networks, and megasatellite constellations can further provide global coverage and high-quality services for IoT communications. In the megaconstellation, large-scale satellites are launched to enhance the capacity. However, the dense distribution of satellites brings intraconstellation interference, limiting the performance. In order to evaluate the restriction of interference caused by system parameters, such as the scale of constellation or the frequency reuse factor, we investigate uplink intraconstellation interference and performance of the megasatellite constellation. First, a multibeam polar constellation with uplink spatial frequency reuse is assumed. Then, the interference model is constructed considering the antenna gain of interfering user terminals and multibeam satellites, where the details of the satellite-fixed frequency reuse scheme and coordinates of co-frequency cells are provided. To evaluate the performance, expressions of outage probability, ergodic capacity, and sum ergodic capacity are driven. The analytical results disclose the impact of system design on the performance, and the accuracy of analysis results is obtained through extensive simulation evaluation. The results show that sum ergodic capacity achieves highest in the case of full frequency reuse for the frequency-limited constellation system, and it gets a linear growth at first but then keeps flat with a trend of fluctuating downward as the scale increases; therefore, the impact of the scale should be considered when constructing megaconstellations.
引用
收藏
页码:4318 / 4329
页数:12
相关论文
共 35 条
[1]   A new simple model for land mobile satellite channels: First- and second-order statistics [J].
Abdi, A ;
Lau, WC ;
Alouini, MS ;
Kaveh, M .
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2003, 2 (03) :519-528
[2]  
Albulet M, 2016, SATOA2016111500118 U
[3]   On some inequalities for the incomplete gamma function [J].
Alzer, H .
MATHEMATICS OF COMPUTATION, 1997, 66 (218) :771-778
[4]   Modeling and Analyzing Millimeter Wave Cellular Systems [J].
Andrews, Jeffrey G. ;
Bai, Tianyang ;
Kulkarni, Mandar N. ;
Alkhateeb, Ahmed ;
Gupta, Abhishek K. ;
Heath, Robert W., Jr. .
IEEE TRANSACTIONS ON COMMUNICATIONS, 2017, 65 (01) :403-430
[5]  
[Anonymous], 2004, S1647 ITU
[6]  
[Anonymous], 2001, S1528 ITU
[7]  
[Anonymous], 2010, S465 ITU
[8]   Coverage and Rate Analysis for Millimeter-Wave Cellular Networks [J].
Bai, Tianyang ;
Heath, Robert W., Jr. .
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2015, 14 (02) :1100-1114
[9]   Should We Worry About Interference in Emerging Dense NGSO Satellite Constellations? [J].
Braun, Christophe ;
Voicu, Andra M. ;
Simic, Ljiljana ;
Maehoenen, Petri .
2019 IEEE INTERNATIONAL SYMPOSIUM ON DYNAMIC SPECTRUM ACCESS NETWORKS (DYSPAN), 2019, :101-110
[10]  
Cherniakov M., 2019, P 20 INT RAD S IRS, P1