电子学报 ›› 2019, Vol. 47 ›› Issue (1): 183-189.DOI: 10.3969/j.issn.0372-2112.2019.01.024

• 学术论文 • 上一篇    下一篇

非理想干扰删除下全双工中继NOMA系统的物理层安全性能研究

李美玲1, 李莹1, Sami Muhaidat2, 王钢飞1, 董增寿1, 王安红1, 梁杰1   

  1. 1. 太原科技大学电子信息工程学院, 山西太原 030024;
    2. 英国萨里大学, 萨里 GU27XH
  • 收稿日期:2017-11-30 修回日期:2018-04-13 出版日期:2019-01-25
    • 通讯作者:
    • 李莹
    • 作者简介:
    • 李美玲 女,1982年生于山西宁武.2012年毕业于北京邮电大学,获博士学位.现为太原科技大学副教授.主要研究方向为无线通信关键技术、认知无线网络、协作通信、物理层安全技术、NOMA.E-mail:meilings-li@126.com;Sami Muhaidat 男,英国萨里大学教授,主要研究方向为无线通信关键技术、物理层安全、物联网技术等;王刚飞 男,1981年生于山西清徐,现为太原科技大学助教,主要研究方向为信道估计、协作频谱感知;董增寿 男,1979年生于山西寿阳,现为太原科技大学教授.主要研究方向为故障诊断、图像处理与模式识别、专网通信技术等;王安红 女,1972年生于山西,现为太原科技大学教授,主要研究方向为多媒体通信等;梁杰 男,加拿大大西蒙雷泽夫大学教授,主要研究方向为视频通信,深度学习等.
    • 基金资助:
    • 国家自然科学基金 (No.61672373,No.51504255); 山西省高等学校科技创新项目 (No.201802090); 山西省晋城科技攻关基金 (No.201501004-4); 山西省互联网+3D打印协同创新项目; 山西省科技创新团队项目 (No.201705D131025); 山西省1331工程重点创新团队项目

Physical Layer Security for NOMA-Based Full Duplex Relay Networks with Non-Ideal Interference Cancellation

LI Mei-ling1, LI Ying1, Sami Muhaidat2, WANG Gang-fei1, DONG Zeng-shou1, WANG An-hong1, LIANG Jie1   

  1. 1. School of Electronic and Information Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, China;
    2. University of Surrey, Surrey GU27XH, UK
  • Received:2017-11-30 Revised:2018-04-13 Online:2019-01-25 Published:2019-01-25
    • Supported by:
    • National Natural Science Foundation of China (No.61672373, No.51504255); Science and Technology Innovation Program of Colleges and Universities in Shanxi Province (No.201802090); Jincheng Science and Technology Research and Development Fund of Shanxi Province (No.201501004-4); The Collaborative Innovation Center of Internet+3D Printing in Shanxi Province; Science and Technology Innovation Team Project of Shanxi Province (No.201705D131025); 1331 Key Innovation Team Project of Shanxi Province

摘要: 全双工协作中继转发信号时存在的自干扰现象会降低系统性能.本文考虑存在窃听者的下行非理想自干扰全双工协作中继非正交多址接入(NFCR-E-NOMA,Non-ideal Full Duplex Cooperative Relay in Non-Orthogonal Multiple Access system with Eavesdropper)系统,分别从系统中断概率和系统截获概率的角度分析了全双工协作中继的自干扰因素对于NFCR-E-NOMA系统安全中断性能的影响;推导了系统中断概率和截获概率的闭合表达式.仿真结果表明,全双工中继转发的自干扰因素对系统性能的影响较大,在NFCR-E-NOMA系统中,存在优化的中继转发功率,且在不同的基站发射功率和中继转发功率条件下,功率分配比对系统性能的影响也不同,在实际主链路信道条件允许的情况下,可通过设置较高的数据传输速率来抑制窃听者的截获概率.

 

关键词: 非正交多址接入, 协作中继, 物理层安全, 中断概率, 截获概率

Abstract: The imperfect self-interference cancellation in full-duplex cooperative relay networks can make the system performance reduced when the relay forwards signals.We considered the downlink non-ideal full duplex cooperative relay in non-orthogonal multiple access system with eavesdropper (NFCR-E-NOMA),based on which,the impact of self-interference to the NFCR-E-NOMA system was analyzed by outage probabilities and intercept probabilities respectively,and whose exact closed-form expressions were derived.Simulation results show that the self-interference have great influence on the system performance.We also find that there exists optimal relay retransmitting power in the NFCR-E-NOMA system.Moreover,the power allocation ratio also has different influence on the system performance under various transmitting power in base station and relay.In addition,the intercept probability of eavesdropper can be reduced by setting higher data rate under the permission of main link.

 

Key words: non-orthogonal multiple access, cooperative relay, physical layer security, outage probability, intercept probability

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