ID 原文 译文
47246 安全通信图（iS-Graph）的安全性能通过增加可控干扰以降低窃听者的信号与干扰比(SIR)来实现。 Secrecy capacity of intrinsically secure communication graph (iS-Graph) can be increased by reducing thesignal quality of eavesdroppers with adding controlled interferences.
47247 研究无线网络中机密信息的传输，网络中合法节点在协作干扰节点的帮助下实现安全通信，在此基础上提出一种干扰协助的安全通信图，即 jS-Graph。 The transmission of secret messages over wirelesschannels in which the legitimate nodes were aided by cooperative jamming was studied, and a secure communicationgraph with jamming, jS-Graph was proposed.
47248 同时，研究了 jS-Graph 的安全属性， First, the security properties of jS-Graph was characterized.
47249 提出使用多个独立的干扰节点来干扰窃听者。 Then, jamming strategies to confuse eavesdroppers were proposed.
47250 为应对窃听者靠近发送者或接收者的难题，使用一种协作干扰策略来干扰源节点或目标节点附近的窃听者。 To tackle the nearby eavesdropper problem, a two-stage cooperativejamming strategy to jam the eavesdroppers near the source or the destination was applied.
47251 结果表明，如果采用协作干扰，无线通信的机密性得以增强。 The results demonstrate that,with the aid of cooperative jamming the secure communication graph can lead to secrecy gains.
47252 针对合作接收的高阶调制成对载波多址（PCMA，paired carrier multiple access）信号，提出一种频偏与时延联合估计的算法。 These results help toclarify how the presence of eavesdroppers and the cooperative jamming can influence secure connectivity in wireless networks. For cooperative received high-order modulation PCMA (paired carrier multiple access) signals, jointestimation of frequency offset and time delay was proposed.
47253 算法利用本地存储的序列样本作为辅助数据， The sequence samples stored locally were used as auxiliary data.
47254 与混合信号求相关得到目标函数，采用二维搜索的方法估计频偏和时延。 Estimation of frequency offset and time delay was calculated by optimizing the objective function, which wasobtained from the cross-correlation computation of the auxiliary data and mixed signal, and the optimized process wasaccomplished by utilizing two-dimensional search.
47255 通过设置联合估计的门限值，大大降低算法的计算量。 By setting the threshold of joint estimation, the calculated amount wasgreatly reduced.