基于准恒包络正交频分复用的临近空间通信抗衰落技术

陆阳; 张东磊; 王婷婷

doi:10.11959/j.issn.1000−0801.2019003

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基于准恒包络正交频分复用的临近空间通信抗衰落技术

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- 基于准恒包络正交频分复用的临近空间通信抗衰落技术
- Anti-fading technology of near space communication based on quasi-constant envelope OFDM
- 电信科学 2019年35卷第1期页码：113-120
- 作者机构：
  
  1. 全球能源互联网研究院有限公司，北京 102209
  2. 北京邮电大学，北京 100876
- 作者简介：
  
  [ "陆阳（1984− ），男，博士，全球能源互联网研究院有限公司高级工程师，主要从事电力通信新技术研究工作。" ]
  [ "张东磊（1986−），男，全球能源互联网研究院有限公司工程师，主要从事电力通信技术应用研究工作。" ]
  [ "王婷婷（1993−），女，北京邮电大学硕士生，主要研究方向为无线通信技术。" ]
- 基金信息：
  
  国家电网公司科技项目“基于高空平台（HAPS）的临近空间通信技术研究”;The Science and Technology Project of State Grid Corporation of China(SGCC)“Research on Near Space Communication Technology Based on High Altitude Platform Station（HAPS）”(No.52110417001A)
- DOI：10.11959/j.issn.1000−0801.2019003
  中图分类号： TN911.7
- 网络出版日期：2019-01，
  
  纸质出版日期：2019-01-20
- 稿件说明：
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陆阳, 张东磊, 王婷婷. 基于准恒包络正交频分复用的临近空间通信抗衰落技术[J]. 电信科学, 2019,35(1):113-120.

Yang LU, Donglei ZHANG, Tingting WANG. Anti-fading technology of near space communication based on quasi-constant envelope OFDM[J]. Telecommunications science, 2019, 35(1): 113-120.
陆阳, 张东磊, 王婷婷. 基于准恒包络正交频分复用的临近空间通信抗衰落技术[J]. 电信科学, 2019,35(1):113-120. DOI： 10.11959/j.issn.1000−0801.2019003.

Yang LU, Donglei ZHANG, Tingting WANG. Anti-fading technology of near space communication based on quasi-constant envelope OFDM[J]. Telecommunications science, 2019, 35(1): 113-120. DOI： 10.11959/j.issn.1000−0801.2019003.

摘要

针对临近空间高空平台功率受限、频谱资源紧张以及在非视距、低仰角环境下通信受多径衰落影响的问题，提出了一种基于准恒包络正交频分复用的临近空间通信抗衰落技术。在发射端，将两路正交频分复用信号分别调制在两路恒包络信号的相位上，并通过移相将两路信号合并为一路；在接收端，通过泰勒级数展开技术将两路信号分开并解调。分析与仿真结果表明，准恒包络正交频分复用具有与正交频分复用相同的频谱效率，通过合理选择调制指数，能够有效对抗多径衰落，且信号峰均功率比低于3 dB，实现了高谱效、高能效的目标。

Abstract

For the near space high altitude platform station (HAPS)

its limited power

tight spectrum resources

and the multipath fading effects due to non line of sight (NLoS) and low elevation communication environment are the main problems. An anti-fading technology of near space communication based on quasi-constant envelope OFDM (QCE-OFDM) was proposed. At the transmitting end

two OFDM signals were respectively modulated on the phases of two constant envelope signals

and then they were merged into one signal via phase shift. At the receiving end

Taylor series expansion technology was employed to divide and demodulate the signal. Analysis and simulation results show that the QCE-OFDM has the same spectral efficiency as OFDM. By selecting the modulation index reasonably

the proposed scheme can combat multipath fading effectively with less than 3 dB signal peak-to-average power ratio (PAPR)

where the goal of high spectral efficiency and high energy efficiency can be achieved.

关键词

Keywords

references

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