作者
Tamer Mekkawy, Rugui Yao, Fei Xu, Ling Wang
发表日期
2017/4/7
研讨会论文
2017 26th Wireless and Optical Communication Conference (WOCC)
页码范围
1-5
出版商
IEEE
简介
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.
学术搜索中的文章
T Mekkawy, R Yao, F Xu, L Wang - 2017 26th Wireless and Optical Communication …, 2017