| 基于STBC的无线认知NOMA系统物理层安全性能研究 |
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| 引用本文： | 李美玲,田莉莉,杨晓霞,李莹,王安红,董增寿,Sami Muhaidat,Mehrdad Dianati. 基于STBC的无线认知NOMA系统物理层安全性能研究[J]. 电子学报, 2020, 48(3): 463-469. DOI: 10.3969/j.issn.0372-2112.2020.03.007 |
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| 作者姓名： | 李美玲 田莉莉 杨晓霞 李莹 王安红 董增寿 Sami Muhaidat Mehrdad Dianati |
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| 作者单位： | 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;3. 华威大学, 英国英格兰 |
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| 摘 要： | 基于非正交多址接入（NOMA，Non-Orthogonal Multiple Access）的认知无线电（CR，Cognitive Radio）网络物理层传输面临主用户干扰和第三方窃听双重干扰威胁.本文提出利用空时编码（STBC，Space Time Block Coding）技术提高认知用户物理层安全性能，推导了任意认知用户的安全中断概率闭合表达式.通过蒙特卡洛仿真进行验证，结果表明，所提STBC-CR-NOMA相比未采用STBC编码方案的CR-NOMA可以明显提高用户的安全中断概率，且随着认知发射功率的增大，近端用户安全中断性能提高越大，而远端用户安全中断性能提升受认知基站发射功率的影响较小.仿真结果还表明，通过调整功率分配系数对远端用户和近端用户的安全中断性能影响不同.
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| 关 键 词： | 非正交多址接入 认知无线电 空时编码 窃听者 物理层安全 安全中断概率 |
| 收稿时间： | 2019-05-22 |
On the Secrecy Performance of NOMA-Based Cognitive Radio Networks with STBC |
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| LI Mei-ling,TIAN Li-li,YANG Xiao-xia,LI Ying,WANG An-hong,DONG Zeng-shou,Sami Muhaidat,Mehrdad Dianati. On the Secrecy Performance of NOMA-Based Cognitive Radio Networks with STBC[J]. Acta Electronica Sinica, 2020, 48(3): 463-469. DOI: 10.3969/j.issn.0372-2112.2020.03.007 |
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| Authors: | LI Mei-ling TIAN Li-li YANG Xiao-xia LI Ying WANG An-hong DONG Zeng-shou Sami Muhaidat Mehrdad Dianati |
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| Affiliation: | 1. School of Electronic and Information Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, China;2. University of Khalifa, Abu Dhabi, The United Arab Emirates;3. University of Warwick, England, UK |
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| Abstract: | The physical layer transmission faces the interference from primary users and eavesdroppers in cognitive radio networks based on non-orthogonal multiple access (CR-NOMA).In this paper,Alamouti space-time block coded (STBC) is utilized to improve the physical layer security transmission performance.The closed-form expressions for the security outage probability of all secondary users are derived.We provide extensive Monte-Carlo simulation results to corroborate the analysis.The results show that the security outage probability of stronger cognitive users is improved by the proposed STBC-NOMA-based CR compared with the traditional NOMA-based CR.Moreover,the security outage probability of the stronger cognitive users experiences performance enhancement with the increase of the cognitive transmission power,whilst the security outage probability of weaker cognitive users will be less impacted by the transmission power.In addition,we demonstrate that the power allocation coefficients will have different impact on the stronger cognitive users and the weaker users. |
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| Keywords: | non-orthogonal multiple access cognitive radio space time block code eavesdropper physical layer security security outage probability |
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