郑州大学学报（工学版）2024，Vol.45Issue(1)：64-69,6.DOI:10.13705/j.issn.1671-6833.2023.04.011
基于QAM的协作通信系统物理层认证技术
QAM Based Physical Layer Authentication Technology for Cooperative Communication Systems
摘要
Abstract
A quadrature amplitude modulation(QAM)based cooperative physical layer authentication mechanism was proposed for the identity authentication in two-user cooperative communication systems.In the proposed mecha-nism,two single-antenna users transmitted their own messages and tags as well as those of the partner with the in-phase component and orthogonal component,respectively.Thus,the messages and tags of two users could be u-niquely decomposed.Maximal ratio combining was employed at the base station to detect the messages and tags,and physical layer identity authentication was performed through tag comparison.In a typical scenario with equal power distribution and symmetric user uplink channels,the closed expressions of symbol error rates of message and tag were derived.The simulation results showed that the authentication probability of the proposed mechanism was improved by 12％-20％compared with the non-cooperative physical layer authentication when the signal-to-noise ratio(SNR)was 6-15 dB.Meanwhile,the authentication probability of illegal attack remained only around 10-3.Consequently,the proposed mechanism had better authentication performance.关键词
物理层认证/协作通信/标签叠加/最大比合并/QAMKey words
physical layer authentication/cooperative communication/tag superposition/maximal ratio combining/QAM分类
信息技术与安全科学引用本文复制引用
韩刚涛,刘瑞雪,闫利,王俊杰,马雪粉..基于QAM的协作通信系统物理层认证技术[J].郑州大学学报（工学版）,2024,45(1):64-69,6.基金项目
国家自然科学基金资助项目(62101504) （62101504）
嵩山实验室项目(纳入河南省重大科技专项管理体系)(221100211300-01) （纳入河南省重大科技专项管理体系）
嵩山实验室预研项目(YYJC022022002) （YYJC022022002）
