Suppression of co-channel interference in NGSO constellation system with interference alignment

Bing DU; Jiawang LI; Xianmei WANG; Wei LI; Xiangnan LIU; Haijun ZHANG

doi:10.11959/j.issn.1000-436x.2021236

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Suppression of co-channel interference in NGSO constellation system with interference alignment

Papers | 更新时间：2024-06-05

- Suppression of co-channel interference in NGSO constellation system with interference alignment
- Journal on Communications Vol. 42, Issue 12, Pages: 144-151(2021)
- 作者机构：
  
  1. 北京科技大学计算机与通信工程学院，北京 100083
  2. 国家无线电监测中心，北京 100037
- 作者简介：
- 基金信息：
  
  Outstanding Youth Science Foundation(61822104)
- DOI：10.11959/j.issn.1000-436x.2021236
  CLC： TN927
- Online First：2021-12，
  
  Published：25 December 2021
- 稿件说明：
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Bing DU, Jiawang LI, Xianmei WANG, et al. Suppression of co-channel interference in NGSO constellation system with interference alignment[J]. Journal on Communications, 2021, 42(12): 144-151.
DOI：

Bing DU, Jiawang LI, Xianmei WANG, et al. Suppression of co-channel interference in NGSO constellation system with interference alignment[J]. Journal on Communications, 2021, 42(12): 144-151. DOI： 10.11959/j.issn.1000-436x.2021236.

摘要

针对当前太空中，非静止卫星轨道（NGSO）星座系统日益增加，使用相同频段、轨道邻近的卫星网络越来越多，NGSO星座系统之间以及NGSO星座系统与传统的静止卫星轨道（GSO）星座系统之间的同频干扰日益严重的问题，提出利用无线通信中的干扰对齐算法，根据卫星网络的传输信道信息，在发射端匹配特征信道的预编码矩阵，缓解低轨卫星网络同频干扰问题，在此基础上以ChinaSat、OneWeb和Fortran系统进行仿真，对利用干扰对齐算法前后的干扰数值进行比较，证明了此方法的可行性，为今后此类问题的研究提供了参考。

Abstract

Aiming at the problem that in the current space， non-geostationary satellite orbit （NGSO） constellation systems were increasing day by day， there are more and more satellite networks nearby orbiting using the same frequency band， and the problem of co-channel interference between NGSO constellation systems and between NGSO constellation systems and traditional geostationary satellite orbit （GSO） constellation systems had become increasingly serious， the interference alignment algorithms of wireless communication was proposed， which matches the precoding matrix of the characteristic channel at the transmitter according to the transmission channel information of the satellite network to alleviate the co-channel interference problem of the low-orbit satellite network.The ChinaSat， OneWeb and Fortran systems were used to simulate and compare the interference values before and after using the interference alignment algorithms， which proves the feasibility of the proposed method and provides a reference for future research on such problems.

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references

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