南京航空航天大学k8凯发集团主页平台管理系统 李斌斌-k8凯发集团

点击次数：
所属单位：电子信息工程学院
发表刊物：ieee trans commun
摘要：in this paper, we study a multiuser uplink network consisting of one base station (bs), multiple users and one eavesdropper (e), where the users are intended to transmit their confidential messages to bs, while the eavesdropper attempts to tap their transmissions. to improve the transmission secrecy, we propose two friendly jammer selection-aided multiuser scheduling schemes, namely, the random jammer selection-aided multiuser scheduling (rjs-mus) without knowing the eavesdropper's channel state information (csi) and the optimal jammer selection-aided multiuser scheduling (ojs-mus), where the csis of eavesdropper are available. for comparison purposes, the conventional non-jammer selection-aided multiuser scheduling (njs-mus) scheme is considered as a benchmark. we derive exact and asymptotic closed-form secrecy outage probability expressions for the conventional njs-mus as well as proposed rjs-mus and ojs-mus schemes. the numerical results show that the proposed rjs-mus and ojs-mus schemes with equal power allocation between the selected friendly jammer and scheduled user perform worse than the conventional njs-mus approach in terms of the secrecy outage probability in the low signal-to-noise ratio (snr) region. as the snr increases, the secrecy outage performance of rjs-mus and ojs-mus schemes substantially improves, which is, in turn, better than that of conventional njs-mus approach. moreover, the secrecy advantage of rjs-mus and ojs-mus over njs-mus becomes more significant with an increasing snr. also, it is shown that for both the rjs-mus and ojs-mus schemes, a better secrecy performance can be achieved through an optimal power allocation (opa) between the scheduled user and friendly jammer. in addition, the proposed rjs-mus and ojs-mus schemes with opa strictly outperform the conventional njs-mus approach in terms of the secrecy outage probability. © 1972-2012 ieee.
issn号：0090-6778
是否译文：否
发表时间：2019-05-01
合写作者：li, bin,zou, yulong,周建江,汪飞,cao, weifeng,yao, yu-dong
通讯作者：li, bin,周建江,李斌斌