The Eigenvalue Decomposition Method for Wireless Physical Layer Security

摘要：

　　For the wiretapping in wireless communication system,this paper proposes an eigenvalue decomposition method for wireless physical layer security.In the method,firstly,the channel state information matrix is decomposed into sub-channels by eigenvalue decomposition.Secondly,we choose the sub-channels with bigger eigenvalue to transmit useful signal and the one with the smallest eigenvalue is transformed into a random channel.Then,the received signal of legitimate receiver becomes steady,while eavesdroppers turns random.The simulations show that,by choosing the characteristic,the method can decrease the demands of legitimate channel state,and keep the eavesdroppers error probability at a high level,so as to increase the system security.We can get the conclusion that the eigenvalue decomposition method can prevent wiretapping and increase wireless physical layer security between the transmitter and legitimate receiver effectively.

关键词： physical layer security wireless system channel state information secrecy capacity eigenvalue decomposition

作者: Hongwei Pang Xueming Wang Kaizhi Huang Jiang Ji

作者单位: National Digital Switching System Engineering & Technological Research Center, Zhengzhou 450002, China

会议类型: 国际会议

会议名称: 2012 IEEE 14th International Conference on Communication Technology(2012年第十四届通信技术国际会议(ICCT 2012))

会议地点: 成都

会议语种:英文

页码: 656-660

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）