通信学报 ›› 2021, Vol. 42 ›› Issue (12): 144-151.doi: 10.11959/j.issn.1000-436x.2021236

• 学术论文 • 上一篇    下一篇

基于干扰对齐的NGSO星座系统同频干扰抑制

杜冰1, 李家旺1, 王先梅1, 李伟2, 刘向南1, 张海君1   

  1. 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
  • 修回日期:2021-12-03 出版日期:2021-12-01 发布日期:2021-12-01
  • 作者简介:杜冰(1981- ),女,北京人,博士,北京科技大学助理教授,主要研究方向为航空通信、数据链、网络编码、合作通信和认知无线电
    李家旺(1997- ),男,河北廊坊人,北京科技大学硕士生,主要研究方向为无线通信、卫星通信
    王先梅(1974- ),女,山东烟台人,博士,北京科技大学副教授,主要研究方向为信号处理、机器学习
    李伟(1984- ),男,湖北黄冈人,博士,国家无线电监测中心高级工程师,主要研究方向为无线电系统间频率兼容技术、频谱管理新技术新应用等
    刘向南(1997- ),男,甘肃金昌人,北京科技大学博士生,主要研究方向为通感一体化通信、边缘计算、卫星通信
    张海君(1986- ),男,辽宁朝阳人,博士,北京科技大学教授,主要研究方向为6G移动通信、人工智能与无线网络、卫星通信、机器学习与大数据等
  • 基金资助:
    国家优秀青年科学基金资助项目(61822104)

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

Bing DU1, Jiawang LI1, Xianmei WANG1, Wei LI2, Xiangnan LIU1, Haijun ZHANG1   

  1. 1 School of Computer &Communication Engineering, University of Science and Technology Beijing, Beijing 100083, China
    2 The State Radio Monitoring Center, Beijing 100037, China
  • Revised:2021-12-03 Online:2021-12-01 Published:2021-12-01
  • Supported by:
    The National Science Found for Excellent Young Scholars(61822104)

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。

关键词: 卫星移动通信系统, 非静止卫星轨道, 同频干扰, 干扰对齐

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.

Key words: satellite mobile communication system, non-geostationary satellite orbit, co-channel interference, interfe-rence alignment

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