标题：Delay-QoS-Driven Robust Power Allocation over Full-Duplex Relay Multicarrier Secure System
作者：Liang, Sui; Ma, Piming; Ma, Yanbo
作者机构：[Liang, Sui; Ma, Piming] Shandong Univ, Sch Informat Sci & Engn, Jinan, Peoples R China.; [Ma, Yanbo] Shandong Univ Finance & Econ, Sch Management S 更多
会议名称：IEEE International Conference on Communication Systems (ICCS)
会议日期：DEC 14-16, 2016
来源：2016 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATION SYSTEMS (ICCS)
关键词：quality-of-service (QoS); secure effective capacity; full-duplex (FD);; secure communication; robust power allocation
摘要：In this paper, we investigate the power allocation policy under channel uncertainties over the full-duplex (FD) relay multicarrier secure communication system. Considering the requirement of the statistical delay quality-of-service (QoS), an optimization problem of maximizing the secure effective capacity under the constrains of powers of both the whole system and the residual loop-interference (LI) of FD relay is formulated to study the robust power allocation via the worst case method. Furthermore, after simplifying the original optimization problem by Taylor approximation, we obtain the optimal solution by using Lagrange dual method and Karush-Kuhn-Tucker (KKT) conditions. Simulation results illustrate the advantages of the proposed robust power allocation strategy and the trade-off between the secure effective capacity and robustness can be achieved.