通信学报 ›› 2021, Vol. 42 ›› Issue (12): 27-34.doi: 10.11959/j.issn.1000-436x.2021239

• 学术论文 • 上一篇    下一篇

基于旋转置乱的索引跳频抗干扰加密方法

鲁信金1, 雷菁1, 施育鑫2   

  1. 1 国防科技大学电子科学学院,湖南 长沙 410000
    2 国防科技大学第63研究所,江苏 南京 210007
  • 修回日期:2021-12-07 出版日期:2021-12-01 发布日期:2021-12-01
  • 作者简介:鲁信金(1994- ),女,安徽滁州人,国防科技大学博士生,主要研究方向为信息论、索引调制、polar 码、物理层安全、无线通信技术等
    雷菁(1968- ),女,陕西西安人,博士,国防科技大学教授、博士生导师,主要研究方向为信息论、LDPC、空时编码、先进的多址技术、物理层安全、无线通信技术等
    施育鑫(1995- ),男,福建泉州人,国防科技大学博士生,主要研究方向为索引调制、抗干扰通信等
  • 基金资助:
    国家自然科学基金资助项目(61502518);国家自然科学基金资助项目(61702536)

Index modulation aided frequency hopping anti-jamming and encryption method based on rotation scrambling

Xinjin LU1, Jing LEI1, Yuxin SHI2   

  1. 1 College of Electronic Science and Technology, National University of Defense Technology, Changsha 410000, China
    2 The Sixty-third Research Institute, National University of Defense Technology, Nanjing 210007, China
  • Revised:2021-12-07 Online:2021-12-01 Published:2021-12-01
  • Supported by:
    The National Natural Science Foundation of China(61502518);The National Natural Science Foundation of China(61702536)

摘要:

为了提升无线通信系统的抗干扰能力和安全性,设计了一种基于旋转置乱的索引跳频抗干扰加密方法,简称加密的索引跳频(EIM-FHSS)方法。首先,通过无线密钥产生多路正交的跳频图案确定当前时刻的可用频点,并利用活跃频点(调制符号的频点)的位置索引传输比特信息。其次,在信息与索引的映射表上,采用无线密钥对映射表进行置乱加密,以保证索引比特的安全性。最后,对活跃频点上传输的符号使用星座旋转加密,使符号比特也具有安全性。理论分析和仿真结果表明,EIM-FHSS方法与传统的索引跳频方法相比具有更强的安全性和抗干扰能力。

关键词: 抗干扰, 安全性, 无线密钥, 索引跳频, 映射置乱, 星座旋转

Abstract:

In order to improve the anti-jamming ability and security of the wireless communication system, an index frequency-hopping anti-interference encryption method based on rotation scrambling was designed, which could be simply called encrypted index modulation frequency hopping spread spectrum (EIM-FHSS).Firstly, the wireless secret key was used to control multiple orthogonal frequency hopping patterns to determine the available frequencies at the current moment.The index of the active frequency (the frequency point with the modulation symbol) was used to transmit the bit information.Secondly, the secret key was used to employ scrambling encryption on the mapping table between information bits and the indexes, to ensure the security of the index bits.Finally, constellation rotation encryption was used on the symbols transmitted on the active frequency in the scheme, which ensured the security of symbol bits.Theoretical analysis and simulation results show that the proposed EIM-FHSS method has stronger security and anti-jamming abilities than the traditional IM-FHSS methods.

Key words: anti-jamming, security, wireless secret key, IM-FHSS, mapping scrambling, constellation rotation

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