Recently, the physical layer security over multiple-input multiple-output (MIMO) non-orthogonal multiple-access (NOMA) systems has been taken more and more seriously. In this letter, a generalized singular value decomposition (GSVD) based MIMO-NOMA security transmission scheme is proposed. The distribution characteristics of the GSVD are applied as tools for the outage performance analysis for the scheme. To minimize the outage probability, the optimal power allocation coefficients are obtained. The theoretical contrast with the Orthogonal Multiple Access (OMA) scheme is also presented, which proves the more superior performance, especially at high signal-noise ratio (SNR) condition. Simulation results are developed to verify the analytical results.

中文翻译：

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基于 GSVD 的 MIMO-NOMA 安全传输

最近，多输入多输出 (MIMO) 非正交多址 (NOMA) 系统的物理层安全性越来越受到重视。在这封信中，提出了一种基于广义奇异值分解（GSVD）的MIMO-NOMA安全传输方案。GSVD 的分布特性被用作该方案的停电性能分析的工具。为了最小化停电概率，获得最佳功率分配系数。还提出了与正交多址 (OMA) 方案的理论对比，证明了更优越的性能，尤其是在高信噪比 (SNR) 条件下。开发仿真结果以验证分析结果。