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学术报告:Security versus Reliability Analysis of Opportunistic Relaying


发布日期:2015-10-27 浏览数:

时间: 2015年10月29日 上午10:00 
地点:信工楼E401
摘要
Physical-layer security is emerging as a promising paradigm of securing wireless communications against eavesdropping between legitimate users, when the main link spanning from source to destination has better propagation conditions than the wiretap link from source to eavesdropper. In this talk, we identify and analyze the tradeoffs between the security and reliability of wireless communications in the presence of eavesdropping attacks. Typically, the reliability of the main link can be improved by increasing the source's transmit power (or decreasing its date rate) to reduce the outage probability, which unfortunately increases the risk that an eavesdropper succeeds in intercepting the source message through the wiretap link, since the outage probability of the wiretap link also decreases when a higher transmit power (or lower date rate) is used. We characterize the security-reliability tradeoffs (SRT) of conventional direct transmission from source to destination in the presence of an eavesdropper, where the security and reliability are quantified in terms of the intercept probability by an eavesdropper and the outage probability experienced at the destination, respectively. In order to improve the SRT, we then propose opportunistic relay selection (ORS) and quantify the attainable SRT improvement upon increasing the number of relays. It is shown that given the maximum tolerable intercept probability, the outage probability of our ORS scheme approaches zero as the number of relays increases to infinity. Conversely, given the maximum tolerable outage probability, the intercept probability of our ORS scheme tends to zero for an infinite number of relays.
报告人简介

邹玉龙:双博士、南京邮电大学教授、博士生导师、国家青年千人计划入选者、国家自然科学基金委优秀青年科学基金获得者、江苏省杰出青年科学基金获得者、IEEE高级会员。2006年本科毕业于南京邮电大学并获信息工程专业工学学士学位,2012年5月获美国史蒂文斯理工学院电子工程专业哲学博士学位,同年7月获南京邮电大学信号与信息处理专业工学博士学位。长期从事认知无线电、协作通信和无线网络安全方面的研究工作,在IEEE Journal on Selected Areas in Communications、IEEE Transactions on Signal Processing、IEEE Transactions on Communications、IEEE Transactions on Wireless Communications等国际著名刊物上发表了第一作者IEEE期刊论文20篇,并于2014年12月获九届IEEE通信学会亚太区最杰出青年研究学者奖。相关成果获得了国内外同行的广泛关注和高度评价,截至目前获Google学术引用累计1100次,SCI他引累计442次,单篇最高引用216次。受邀担任IEEE Communications Surveys & Tutorials、IEEE Communications Letters、IET Communications、《中国通信》和EURASIP Journal on Advances in Signal Processing等国内外SCI期刊的杂志编委,同时出任了IEEE ICC/GLOBECOM/WCNC/VTC等国际知名学术会议的技术委员会委员。

南昌大学科技处 
信息工程学院  
2015年10月27日

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