论文标题
在安全的Noma辅助半质量系统上
On Secure NOMA-Aided Semi-Grant-Free Systems
论文作者
论文摘要
Sem-prom-free（SGF）传输方案使赠款（GF）用户能够利用分配给基于赠款（GB）用户的资源块，同时保持GB用户的服务质量。这项工作调查了非正交多访问（NOMA）辅助SGF系统的保密性能。首先，得出了具有单个GF用户的NOMA辅助SGF系统的确切和渐近保密概率（SOP）的分析表达式。然后，考虑了具有多个GF用户的SGF系统和最佳用户调度方案。精确和渐近SOP的分析表达是通过利用秩序统计理论得出的。提供了蒙特卡洛模拟结果，并将其与两个基准方案进行了比较。已经证明了系统参数对所考虑系统SOP的影响，并验证了开发的分析结果的准确性。结果表明，GB的中断目标率和GF的安全目标率都是SGF系统保密性能的主要因素。
Semi-grant-free (SGF) transmission scheme enables grant-free (GF) users to utilize resource blocks allocated for grant-based (GB) users while maintaining the quality of service of GB users. This work investigates the secrecy performance of non-orthogonal multiple access (NOMA)-aided SGF systems. First, analytical expressions for the exact and asymptotic secrecy outage probability (SOP) of NOMA-aided SGF systems with a single GF user are derived. Then, the SGF systems with multiple GF users and the best-user scheduling scheme is considered. Analytical expressions for the exact and asymptotic SOP are derived by utilizing order statistics theory. Monte Carlo simulation results are provided and compared with two benchmark schemes. The effects of system parameters on the SOP of the considered system are demonstrated and the accuracy of the developed analytical results is verified. The results indicate that both the outage target rate for GB and the secure target rate for GF are the main factors of the secrecy performance of SGF systems.
