Effects of Channel Correlation on Outage Secrecy Capacity
Effects of Channel Correlation on Outage Secrecy Capacity
复制标题
DOI：
10.2197/ipsjjip.21.640
复制
发表时间：
2013-09
期刊：
影响因子：
--
通讯作者：
Jinxiao Zhu;Xiaohong Jiang;O. Takahashi;N. Shiratori
中科院分区：
文献类型：
--
作者：
Jinxiao Zhu;Xiaohong Jiang;O. Takahashi;N. Shiratori
：我们考虑在无线准静态衰落窃听信道上传输机密数据时，主信道和窃听信道是相关的。在假设发送方在发送前只知道主信道的信道状态信息（CSI）而不知道窃听信道的CSI的情况下，推导出了当发送功率趋于无穷大时的渐近中断概率和渐近中断保密容量，并将主信道和窃听信道独立时的相应结果作为特例加以覆盖.在理论分析的基础上，讨论了信道相关性对渐进中断概率和渐进中断保密容量的影响。值得注意的是，我们的研究结果表明，主信道和窃听信道之间的相关性对渐近中断概率和渐近中断保密容量都有显着影响，这种影响可能是有益的，也可能是有害的，这取决于主信道和窃听信道之间的相对信道条件。
: We consider the transmission of confidential data over a wireless quasi-static fading wiretap channel when the main and eavesdropper channels are correlated there. Under the assumption that before transmission the transmitter only knows the channel state information (CSI) of the main channel but has no idea about the CSI of the eavesdropper channel, we derive the asymptotic outage probability and also asymptotic outage secrecy capacity as the transmission power goes to infinity, which cover the corresponding results when the main and eavesdropper channels are independent as special cases. Based on the theoretical results, the e ff ects of channel correlation on the asymptotic outage probability and asymptotic outage secrecy capacity are explored. Remarkably, our results reveal that the correlation between the main and eavesdropper channels has a significant impact on both the asymptotic outage probability and asymptotic outage secrecy capacity and that such an impact can be helpful or harmful depending on the relative channel condition between the main and eavesdropper channels.