%0 Journal Article
%T Security method of wireless physical layer security based onmultipath channel random delay<br>基于多径信道随机延时的物理层全算法
%A PANG Hong-wei
%A WANG Xue-ming
%A JI Jiang
%A LI Xiang-yu
%A JIN Liang
%A <br>庞宏伟
%A 王雪明
%A 吉　江
%A 李翔宇
%A 金　梁
%J 计算机应用研究
%D 2012
%I 
%X For the wire-tapping in wireless communication system, this paper presented an encrypting method based on channel multipath delay-time information to ensure the security of physical layer in wireless communication system. In this method, the transmitter made the time to transmit symbol random with channel multipath delay-time information that estimated, and made the received signal of legitimate receiver stronger at the synchronization location. So the legitimate could receive the information normally. While the received signal of eavesdropper turned random for different channel information, such as phase and range. Then the eavesdropper couldn't recover the information with the random received signal, and the error probability was high, which increased the security of legitimate receiver. The simulations show that the method can keep the eavesdropper's error probability at a high level, so as to increase the system security. Finally, it comes to the conclusion that this method can ensure the security of physical layer in wireless communication system with channel multipath.
%K wireless communication system
%K physical layer secrecy
%K channel multipath information
%K delay-time information
%K synchronization
%K error probability<br>无线通信系统
%K 物理层安全
%K 信道多径信息
%K 延时信息
%K 同步
%K 误码率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=E82D2154DD923E6EFE80D513005487FB&yid=99E9153A83D4CB11&vid=771469D9D58C34FF&iid=5D311CA918CA9A03&sid=1800F07E94FDC0C5&eid=9C8EA42145B5801B&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=0&reference_num=15