论文标题
能源有效的稳健横梁成形和合作式干扰设计，用于IRS辅助误差网络
Energy Efficient Robust Beamforming and Cooperative Jamming Design for IRS-Assisted MISO Networks
论文作者
论文摘要
节能设计和安全通信在无线通信网络中至关重要。但是，通过使用物理层安全性实现的能源效率可能会受到通道条件的限制。为了解决这个问题，研究了一个具有独立合作干扰的智能反射表面（IRS）辅助多个输入单输出（MISO）网络。通过在完美的通道状态信息（CSI）和不完美的CSI下共同设计发射和障碍物形成和IRS相移矩阵，从而最大程度地提高了能源效率。 为了解决具有挑战性的非凸准分数问题，提出了一种基于半芬矿编程（SDP）放松的算法，用于在完美的CSI案例下解决能源效率最大化问题，而另一种基于$ \ Mathcal {s} $ - 过程的替代优化算法用于解决问题的情况下，该案例使用了问题。 仿真结果表明，所提出的设计在能源效率方面优于基准方案。此外，能源效率与保密率之间的权衡是在IRS辅助的MISO网络中找到的。此外，即使CSI的不确定性，IRS也可以帮助提高能源效率。
Energy-efficient design and secure communications are of crucial importance in wireless communication networks. However, the energy efficiency achieved by using physical layer security can be limited by the channel conditions. In order to tackle this problem, an intelligent reflecting surface (IRS) assisted multiple input single output (MISO) network with independent cooperative jamming is studied. The energy efficiency is maximized by jointly designing the transmit and jamming beamforming and IRS phase-shift matrix under both the perfect channel state information (CSI) and the imperfect CSI. In order to tackle the challenging non-convex fractional problems, an algorithm based on semidefinite programming (SDP) relaxation is proposed for solving energy efficiency maximization problem under the perfect CSI case while an alternate optimization algorithm based on $\mathcal{S}$-procedure is used for solving the problem under the imperfect CSI case. Simulation results demonstrate that the proposed design outperforms the benchmark schemes in term of energy efficiency. Moreover, the tradeoff between energy efficiency and the secrecy rate is found in the IRS-assisted MISO network. Furthermore, it is shown that IRS can help improve energy efficiency even with the uncertainty of the CSI.
