基于双变量泊松点过程的无线Ad Hoc网络的保密广播传输容量分析  

Secrecy Broadcast Transmission Capacity of Wireless Ad Hoc Networks Based on Bivariate Poisson Point Process

作　　者：孙晓惠[1] 尹长川[1] 

机构地区：[1]北京邮电大学北京市网络体系构建与融合重点实验室,北京100876

出　　处：《电子学报》2014年第9期1847-1851,共5页Acta Electronica Sinica

基　　金：国家高技术研究发展计划(863计划)课题(No.2011AA100706);国家自然科学基金(No.61271257;No.60972073);北京市自然科学基金(No.4122034);教育部博士点基金(No.20120005110007)

摘　　要：本论文利用双变量泊松点过程对无线ad hoc广播网络和非法窃听网络共存的网络场景进行建模,运用随机几何工具,研究了无线ad hoc网络的保密广播传输容量,其定义为未发生窃听中断的广播发送节点密度、广播发送节点的相邻接收节点数量的平均值与保密速率的乘积.针对一般衰落和瑞利衰落信道条件,论文推导了造成保密中断的相邻窃听节点数量的平均值和保密广播传输容量的表达式.分析结果表明,与不存在相关性的网络场景相比,广播网络和窃听网络间的相关性会带来的保密广播传输容量的损失.We use bivariate Poisson point process（BPPP） to model the scenario where a wireless ad hoc broadcast network coexists with a wiretapping network .By using stochastic geometry tools ,we study the secrecy broadcast transmission capacity of wireless ad hoc network ,which is defined as the product among the spatial density of broadcast transmissions without secrecy out-age ,the average number of neighbors of a broadcasting node ,and the secrecy rate .We first derive the average number of eavesdrop-ping neighbors that causes secrecy outage and then characterize the secrecy broadcast transmission capacity over general fading and Rayleigh fading channels .Finally ,numerical results are presented to show that in comparison to the case without correlation ,the cor-relation between the legitimate nodes and the eavesdroppers degrades the secrecy broadcast transmission capacity .

关 键 词：无线AD HOC网络 保密广播传输容量 双变量泊松点过程 保密速率 

分 类 号：TN92[电子电信—通信与信息系统]