中国科学院国家空间科学中心机构知识库
Advanced  
NSSC OpenIR  > 空间技术部  > 期刊论文
题名: 卫星数传OFDM信号的多普勒效应影响分析
其他题名: Analysis of Doppler effects on satellite data transmission of OFDM signals
作者: 李炯卉; 熊蔚明; 姚辰
作者部门: 空间技术部
关键词: 近地轨道卫星 ; 星地数据传输 ; 正交频分复用 ; 多普勒效应
刊名: 系统工程与电子技术
ISSN号: 1001-506X
出版日期: 2016
卷号: 38, 期号:12, 页码:2849-2854
收录类别: CSCD
项目资助者: 中国科学院专项创新基金
中文摘要: 正交频分复用(orthogonal frequency division multiplexing,OFDM)信号具有较高的频谱效率,有利于实现高速传输。在卫星对地高码率数据传输系统设计中,OFDM有助于解决带宽资源的问题,因此极富吸引力。但是,由于近地轨道(low earth orbit,LEO)星地链路的大动态特性,传输信号会遭受严重的多普勒效应影响。对于宽带OFDM信号而言,多普勒效应的表现形式更为复杂,不再仅仅是频率的偏移。分析宽带OFDM信号在LEO卫星对地数传链路中所受到的多普勒影响。首先,对卫星数传链路进行数学建模,并且推导出该大动态场景下的OFDM信号模型;之后,量化分析由于多普勒效应所产生的符号间干扰和载波间干扰。根据理论分析结果,给出OFDM体制在LEO星地数传应用中的设计要求和设计局限。
英文摘要: Orthogonal frequency division multiplexing(OFDM)is a spectral efficient technique which benefits the high-speed transmission.In the high-rate satellite-ground data transmission system design,OFDM is very attractive since it helps solving the bandwidth resource issue.However,with the large dynamic character of the low earth orbit(LEO)satellite-ground link,the data transmission signal suffers significant Doppler effects.Moreover,Doppler effects appear more complex for wideband OFDM.Merely considering frequency shift is inadequate.In this paper,we analyze the Doppler effect for wideband OFDM signals in the LEO satelliteground data transmission scenario.The paper models the LEO satellite-ground data transmission link,and deduces the OFDM signal model in this large dynamic environment.Then,inter-symbol interference(ISI)and inter-channel interference brought by Doppler effects are quantified.The theoretical results are employed to analyze the OFDM system design requirement and design limitation for LEO satellite-ground data transmission application.
语种: 中文
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/5738
Appears in Collections:空间技术部_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
201638122849-2854.pdf(1335KB)期刊论文作者接受稿限制开放View 联系获取全文
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[李炯卉]'s Articles
[熊蔚明]'s Articles
[姚辰]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[李炯卉]‘s Articles
[熊蔚明]‘s Articles
[姚辰]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: 201638122849-2854.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院国家空间科学中心 - Feedback
Powered by CSpace