@inproceedings{2a6ff0433c604c70b7793e951f82688b,
title = "Optimal power allocation for achievable secrecy rate in an untrusted relay network with bounded channel estimation error",
abstract = "The objective of this paper is to maximize the secrecy rate in an untrusted relay network with imperfect channel state information (CSI). Considering bounded channel estimation error in cooperative jamming network, we optimize the power allocation for confidential and jamming signals to maximize the instantaneous secrecy rate. The upper and lower bounds of achievable secrecy rate are analyzed. The ergodic secrecy rate (ESR) is further derived to evaluate the maximum average secrecy rate. And the optimal power allocation is also studied based on ESR. Numerical results show optimal power allocation can increase both instantaneous secrecy rate and ESR, and at higher SNR, the impact of channel estimation error can be neglected for the maximum ESR, which is asymptotically approaches to the upper bound.",
keywords = "bounded error, Cooperative jamming, ergodic secrecy rate, imperfect CSI",
author = "Tamer Mekkawy and Rugui Yao and Fei Xu and Ling Wang",
note = "Publisher Copyright: {\textcopyright} 2017 IEEE.; 26th Wireless and Optical Communication Conference, WOCC 2017 ; Conference date: 07-04-2017 Through 08-04-2017",
year = "2017",
month = may,
day = "15",
doi = "10.1109/WOCC.2017.7929010",
language = "英语",
series = "2017 26th Wireless and Optical Communication Conference, WOCC 2017",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2017 26th Wireless and Optical Communication Conference, WOCC 2017",
}