基于毫米波高铁车地通信的自适应多波束成形方法

doi:10.11896/jsjkx.200100058

计算机科学 ›› 2020, Vol. 47 ›› Issue (6): 266-270.doi: 10.11896/jsjkx.200100058

基于毫米波高铁车地通信的自适应多波束成形方法

蒋锐^1,2, 尹惠^1,2, 徐友云²

1 南京邮电大学通信与信息工程学院南京210003
2 南京邮电大学通信与网络技术国家地方联合工程研究中心南京210003

收稿日期:2020-01-08 出版日期:2020-06-15 发布日期:2020-06-10
通讯作者: 蒋锐(j_ray@njupt.edu.cn)
基金资助:
国家重点研发计划(2016YFE0200200);国家自然科学基金(61801240,61701253);南京邮电大学研究项目(NY220008)

Millimeter Wave Based Adaptive Multi-beamforming Scheme for High-speed Railway Vehicle- ground Communications

JIANG Rui^1,2, YIN Hui^1,2, XU You-yun²

1 College of Telecommunications and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China
2 National Local Joint Engineering Research Center for Communication and Network Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,China

Received:2020-01-08 Online:2020-06-15 Published:2020-06-10
About author:JIANG Rui,born in 1985,Ph.D,asso-ciate professor.His main research inte-rest is wireless communications.
Supported by:
This work was supported by the National Key Research and Development Program of China (2016YFE0200200),National Natural Science Foundation of China (61801240,61701253) and Research Foundation of Nanjing University of Posts and Telecommunications(NY220008)

摘要/Abstract

摘要： 文中提出了一种基于毫米波高铁车地通信的自适应多波束成形方法。在该方法中,基站利用毫米波同时发射多个具有不同宽度的波束进行信号传输,从而提升系统的吞吐量。多波束传输方法也可以降低系统的通信中断概率。但是,多个波束同时传输信号会引发波束间干扰的问题。为了减弱其影响,采用一种自适应波束激活算法来实时调整激活波束的数量,使系统在当前时刻保持最佳的吞吐量性能。理论分析和仿真结果表明,所提方法可以进一步提升高铁车地通信系统的吞吐量,同时还可以获得较低的通信中断概率。

关键词: 波束间干扰, 多波束成形, 高铁通信, 毫米波

Abstract: A millimeter wave based adaptive multi-beamforming scheme for high-speed railway (HSR) vehicle-ground communications is proposed in this paper.In the proposed scheme,multiple beams with different beam-width are formed by base station simultaneously to improve the system throughputs.In the multi-beam transmission method,the outage probability could be decreased as well.Unfortunately,the inter beam interference (IBI) is introduced when multiple beams transmit signals simultaneously.Therefore,an adaptive algorithm adjusting the activated beams in real time is presented in this scheme to mitigate the IBI and maintain an optimal throughput at current time.Theoretical analysis and simulation results suggest that the proposed scheme can improve the system throughput with a lower outage probability in HSR vehicle-ground communications.

Key words: High-speed railway communications, Inter beam interference, Millimeter-wave, Multi-beamforming

中图分类号:

U285

蒋锐, 尹惠, 徐友云. 基于毫米波高铁车地通信的自适应多波束成形方法[J]. 计算机科学, 2020, 47(6): 266-270. https://doi.org/10.11896/jsjkx.200100058

JIANG Rui, YIN Hui, XU You-yun. Millimeter Wave Based Adaptive Multi-beamforming Scheme for High-speed Railway Vehicle- ground Communications[J]. Computer Science, 2020, 47(6): 266-270. https://doi.org/10.11896/jsjkx.200100058

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基于毫米波高铁车地通信的自适应多波束成形方法

Millimeter Wave Based Adaptive Multi-beamforming Scheme for High-speed Railway Vehicle- ground Communications

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