Secure MIS-NOMA Transmission With Artificial Noise
Secure MIS-NOMA Transmission With Artificial Noise
复制标题
使用人工噪声确保 MISO-NOMA 传输安全
DOI：
10.1109/tvt.2018.2811733
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发表时间：
2018-07-01
影响因子：
6.8
通讯作者：
Chen, Jian
中科院分区：
文献类型：
--
作者：
Lv, Lu;Ding, Zhiguo;Chen, Jian
该通信研究了一种用于多输入单输出非正交多址（MISO-NOMA）系统的新保密波束成形（SBF）方案。特别是，所提出的SBF方案有效地利用人工噪声来保护两个NOMA辅助的合法用户的机密信息，使得只有窃听者的信道被降级。考虑到不完美的最坏情况连续干扰消除的实际假设（这是采用 NOMA 传输的独特特征），我们推导了保密中断概率的封闭式表达式来表征保密性能。之后，我们对保密多样性顺序进行分析，以提供有关安全 MISO-NOMA 传输的进一步见解。提供的数值结果证明了所开发的分析结果的准确性和所提出的 SBF 方案的有效性。
This correspondence studies a new secrecy beamforming (SBF) scheme for multiple-input single-output non-orthogonal multiple access (MISO-NOMA) systems. In particular, the proposed SBF scheme efficiently exploits artificial noise to protect the confidential information of two NOMA assisted legitimate users, such that only the eavesdropper's channel is degraded. Considering a practical assumption of the imperfect worst-case successive interference cancellation which is a unique character in employing NOMA transmission, we derive a closed-form expression for the secrecy outage probability to characterize the secrecy performance. After that, we carry out an analysis of secrecy diversity order to provide further insights about secure MISO-NOMA transmission. Numerical results are provided to demonstrate the accuracy of the developed analytical results and the effectiveness of the proposed SBF scheme.