论文标题
安全和强大的MIMO收发器进行多播任务关键沟通
Secure and Robust MIMO Transceiver for Multicast Mission Critical Communications
论文作者
论文摘要
关键任务通信（MCC）涉及负责民间社会安全的人们之间的所有通讯。 MCC具有独特的要求，包括提高可靠性，安全性和小组通信支持。在本文中，我们提出了一个安全且稳健的多输入 - 型号输出（MIMO）收发器，该收发器专为在存在多个窃听器的情况下支持多播MCC的多个基站。我们将合法用户的总和平方器（SMSE）作为目标函数提出最小化问题，而MSE在EavesDroppers处的下限作为约束。由于物理层安全机制，即MIMO波束形成和人造噪声（AN），可以实现安全性。可靠性是通过设计一个可用于驱动状态信息错误的系统来实现的。它们可以是已知的分布或限制的。在前一种情况下，提出了一种坐标下降算法来解决该问题。在后一种情况下，我们提出了一种基于最坏情况的迭代算法。物理层和系统级别的数值结果揭示了可靠的MCC可靠设计的关键作用。我们展示了强大的设计和A的兴趣，以改善安全差距。我们表明，对于高度安全和可靠的MCC，首选的BS合作是完整的，但动态聚类允许对容量进行权衡的安全性和可靠性。
Mission-critical communications (MCC) involve all communications between people in charge of the safety of the civil society. MCC have unique requirements that include improved reliability, security and group communication support. In this paper, we propose a secure and robust Multiple-Input-Multiple-Output (MIMO) transceiver, designed for multiple Base Stations supporting multicast MCC in presence of multiple eavesdroppers. We formulate minimization problems with the Sum-Mean-Square-Error (SMSE) at legitimate users as an objective function, and a lower bound for the MSE at eavesdroppers as a constraint. Security is achieved thanks to physical layer security mechanisms, namely MIMO beamforming and Artificial Noise (AN). Reliability is achieved by designing a system which is robust to Channel State Information errors. They can be of known distribution or norm-bounded. In the former case, a coordinate descent algorithm is proposed to solve the problem. In the latter case, we propose an worst-case based iterative algorithm. Numerical results at physical layer and system level reveal the crucial role of robust designs for reliable MCC. We show the interest of both robust design and AN to improve the security gap. We show that full BS cooperation in preferred for highly secured and reliable MCC but dynamic clustering allows to trade-off security and reliability against capacity.
