基于无线携能的双向中继星地网络系统性能分析  

Performance Analysis of Two-way Relay Satellite-Terrestrial Network System Based on SWIPT

作　　者：李真 王钢[1] 杨明川[1] 王金龙 LI Zhen;WANG Gang;YANG Mingchuan;WANG Jinlong(School of Electronics and Information Engineering,Harbin Institute of Technology,Harbin 150080,China)

机构地区：[1]哈尔滨工业大学电子与信息工程学院,黑龙江哈尔滨150080

出　　处：《无线电通信技术》2021年第5期644-648,共5页Radio Communications Technology

基　　金：国家自然科学基金项目(62071146)。

摘　　要：随着卫星通信技术的发展和用户需求的增加,星地混合网络以其性能优势和空间优势吸引了大量学者的关注,然而,实现高速率高质量通信的同时也会降低双向中继星地网络的生存时间。因此,能量受限一直阻碍着星地混合网络的实际应用,针对这一问题提出了一种基于无线携能的双向中继星地网络系统传输方法。首先推导了卫星终端和用户终端的可达速率,其次引入无线携能技术,推导出双向中继星地网络系统的能量效率,并利用蒙特卡洛仿真,对该系统的能量性能进行了分析。仿真结果表明,无线携能技术能够有效地降低系统能量消耗,依据实际通信环境合理设置中继发射功率将有助于提高系统能量效率。With the development of satellite communication technology and the increase of user demand,hybrid satellite-terrestrial network has attracted the attention of many scholars because of its performance and space advantages.However,the realization of high-speed and high-quality communication will also reduce the life time of two-way relay satellite-terrestrial network.Therefore,energy constraints have hindered the practical application of hybrid satellite-terrestrial network.To solve this problem,this paper proposes a two-way relay satellite-terrestrial network transmission method based on SWIPT.Firstly,the reachable rates of satellite terminals and user terminals are derived.Secondly,SWIPT technology is introduced to derive the energy efficiency of the two-way relay satellite-terrestrial network system.The energy performance of the system is analyzed by Monte Carlo simulation.Simulation results show that SWIPT technology can effectively reduce the energy consumption of the system,and the reasonable setting of the relay transmission power according to the actual communication environment will help to improve the energy efficiency of the system.

关 键 词：卫星通信 双向中继 能量收集 能量效率 

分 类 号：TN927.2[电子电信—通信与信息系统]