%0 Journal Article
%T Scheme of physical layer secrecy coding under partial channel characteristics<br>部分信道特征下的物理层安全编码方法
%A WANG Ya-dong
%A HUANG Kai-zhi
%A JI Jiang
%A ZHONG Zhou
%A <br>王亚东
%A 黄开枝
%A 吉　江
%A 钟　州
%J 计算机应用研究
%D 2012
%I 
%X This paper proposed a scheme of physical layer secrecy coding under partial channel characteristics aiming at physical layer secure transmission problem. The multi-antenna transmitter exploited beam-former to send signal with artificial noise which was orthogonal with authorized channel characteristics. It used interleaving LDPC to reduce the security gap between authorized channel and eavesdropping channel. Then found the minimum secrecy outage probability with authorized channel SNR constraint, and archived the optimal power allocation for physical layer secure transmission. So the authorized channel could keep low BER with high SNR, while the eavesdropping channel could only have high BER with low SNR. Simulation results show that, the proposed method can realize lower secrecy outage probability with authorized channel SNR constraint.
%K artificial noise
%K beam-former
%K interleaving LDPC
%K secrecy outage probability<br>人工噪声
%K 波束成型
%K 交织LDPC
%K 私密中断概率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=22653CDAF59BBDC151ADCEECD0DB3EAF&yid=99E9153A83D4CB11&vid=771469D9D58C34FF&iid=9CF7A0430CBB2DFD&sid=BDFF114FF0CA359C&eid=55B30F552B55971E&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=0&reference_num=15