Dual-Threshold Based Secure On-Off Transmission Scheme for Dense HCNs with Imperfect CSI

作     者：Yunjia Xu Kaizhi Huang Yi Zou Xin Hu 

作者机构：National Digital Switching System Engineering & Technological Research Center 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2019年第16卷第3期

页      面：132-142页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：supported in part by National Natural Science Foundation of China under Grants No. 61871404  61401510  61521003  61501516 

主　　题：physical layer security imperfect CSI dense heterogeneous cellular networks On-Off transmission secure energy efficiency 

摘      要：In this paper, we propose a dual-threshold based secure On-Off transmission scheme, where signals are transmitted only if the channel condition can guarantee secure and reliable communication. First, we present a dynamic access strategy to increase access efficiency, which provides an access region for the intended user. Then, we propose an emission control policy to transmit signals according to the current channel condition, which declines the influence of channel estimation errors and guarantees qualities of communication links. Furthermore, we give a comprehensive performance analysis for the proposed scheme in terms of connection outage probability(COP) and secrecy outage probability(SOP), and present a dual-threshold optimization model to further support the performance. Numerical results verify that the secure On-Off transmission scheme can increase the system secure energy efficiency and guarantee reliable and secure communication.