1.太原科技大学电子信息工程学院, 山西太原 030024
2.Khalifa大学,阿联酋阿布扎比 127788
[ "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.现为太原科技大学教授.主要研究方向为认知无线电、协作通信、NOMA和物理层安全技术.E‑mail: meiling_li@126.com" ]
[ "陈 琴(通信作者) 女,1994年生于安徽池州.现为太原科技大学电子信息工程学院硕士研究生,主要研究方向为基于非正交多址接入系统的物理层安全性能. E‑mail: 773574827@qq.com" ]
[ "杨晓霞 女,1995年生于山西阳曲.现为太原科技大学电子信息工程学院硕士研究生,主要研究方向为无线网络的物理层安全性能. E‑mail: 2509085887@qq.com" ]
[ "王安红 女,1972年生于山西闻喜.2009年毕业于北京交通大学获博士学位.现为太原科技大学教授.主要研究方向为图像视频编码与传输、压缩感知、秘密图像共享. E‑mail: ahwang@tyust.edu.cn" ]
[ "董增寿 男,1970年生于山西寿阳. 2009年毕业于太原科技大学获博士学位.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. E‑mail: dongzs@tyust.edu.cn" ]
[ "Sami Muhaidat 男,Khalifa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. E‑mail: muhaidat@ieee.org" ]
收稿:2020-10-08,
修回:2021-01-10,
纸质出版:2021-07-25
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李美玲,陈琴,杨晓霞等.非理想硬件条件下协作NOMA系统安全中断性能研究[J].电子学报,2021,49(07):1354-1362.
LI Mei‑ling,CHEN Qin,YANG Xiao‑xia,et al.Research on Secrecy Outage Performance of Cooperative NOMA System with Residual Hardware Impairment[J].ACTA ELECTRONICA SINICA,2021,49(07):1354-1362.
李美玲,陈琴,杨晓霞等.非理想硬件条件下协作NOMA系统安全中断性能研究[J].电子学报,2021,49(07):1354-1362. DOI: 10.12263/DZXB.20201101.
LI Mei‑ling,CHEN Qin,YANG Xiao‑xia,et al.Research on Secrecy Outage Performance of Cooperative NOMA System with Residual Hardware Impairment[J].ACTA ELECTRONICA SINICA,2021,49(07):1354-1362. DOI: 10.12263/DZXB.20201101.
实际收发设备的非理想硬件(RHI
Residual Hardware Impairment)特性会对协作非正交多址接入(NOMA
Non‑Orthogonal Multiple Access)系统性能产生重要影响.因此,本文提出了基于RHI的下行链路单窃听多中继协作NOMA系统模型,推导了联合考虑合法链路和窃听链路使目标信噪比最大化(M‑LaE‑SNR
Maximized SNR for Legitimate and Eavesdropping link)中继传输方案下的安全中断概率闭合表达式和渐近表达式.分析和仿真结果表明,所提M‑LaE‑SNR方案相比其他方案可有效提高用户的安全中断性能,且中继数越多所提方案性能优势越明显;同时RHI使得系统安全传输性能降低,且RHI对性能的影响程度主要与主链路信噪比以及协作中继个数有关;且不同节点处的RHI对系统安全性能造成的影响程度不同.研究结果还证明了用户的安全分集阶数等于中继数量
K
.
Residual hardware impairment (RHI) characteristics exist in actual transceiver which will have an important impact on the cooperative non‑orthogonal multiple access (NOMA) system performance. In this paper
downlink single eavesdropper and multi relay cooperative non‑orthogonal multiple access system with RHI is proposed
and the closed expression and asymptotic expression of secrecy outage probability performance is derived under the relay transmission scheme by maximizing SNR for joint legitimate and eavesdropping link(M‑LaE‑SNR);The analytical and simulation results show that the secrecy outage performance of RHI‑D‑E‑MR‑NOMA system using M‑LaE‑SNR scheme is better than the other schemes
and the more the number of relays
and the performance advantage of the proposed scheme is more obvious with more relay numbers; Meanwhile
RHI can reduce the secrecy transmission performance of the system
and the influence of RHI on the performance is mainly related to the signal‑to‑noise ratio (SNR) of the main link and the number of cooperative relays; And RHI at different nodes have different influences on system secure performance. It is also proved that the order of user’s secrecy diversity order is equal to the number of relays
K
.
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