基于非合作博弈的协同干扰物理层安全传输方法

发布时间：2018-01-25 17:32

本文关键词： 物理层安全非合作博弈波束成型分布式功率控制斯坦伯格均衡　出处：《计算机应用》2017年S1期 　论文类型：期刊论文

【摘要】：在基于非合作博弈的协同干扰物理层安全传输中,针对系统安全速率随干扰节点位置移动而剧烈下降的问题,提出一种对干扰信号进行波束成型与非合作博弈相结合的方法。首先使干扰信号在目的节点方向形成零陷,使目的节点接收到的干扰信号远远低于其他方向的干扰信号,从而减少目的节点受到的干扰。在此基础上采用斯坦伯格功率拍卖模型建立买卖双方的效用函数,通过分布式功率控制方法使得系统达到斯坦伯格均衡,并经过比较后选择合适的干扰节点和合适的干扰功率进行干扰,使得系统的效用达到最大,最后获得对应的安全速率。通过仿真验证,该方法能消除对干扰节点位置的限制,并且有效提高系统的安全速率,最高提高了0.1875 bit/s/Hz,最低提高了0.003 1 bit/s/Hz。
[Abstract]:In the cooperative interference physical layer security transmission based on non-cooperative game, the system security rate decreases sharply with the interference node position. A method of combining beamforming and non-cooperative game for jamming signal is proposed. Firstly, the interference signal is trapped in the direction of destination node. The interference signal received by the destination node is far lower than the interference signal in other directions, thus reducing the interference to the destination node. On this basis, the utility function of the buyer and the seller is established by using Steinberg power auction model. The distributed power control method makes the system achieve Steinberg equilibrium, and after comparison, select the appropriate interference node and the appropriate interference power to interfere, make the system to achieve the maximum effectiveness. Finally, the corresponding security rate is obtained. The simulation results show that the proposed method can eliminate the limitation of interference node location and effectively improve the security rate of the system. The highest increase was 0.1875 bits / s / s / Hz, and the lowest was 0.0031 bit / s / s / Hz.
【作者单位】：解放军理工大学通信工程学院;南京电讯技术研究所;
【分类号】：TN918
【正文快照】： 0引言Wyner于1975年在文献[1]中首次提出基于Shannon信息论的Wire-tap信道模型。该文献首次证明,当合法接受者的信道质量比窃听者的信道质量好时,总能找出一种信道编码使得合法用户在正确解调的情况下使窃听者无法从接收的信号中获得任何有益的信息,即达到完善保密;并在此基础

【参考文献】