作者
Kisong Lee, Jun-Pyo Hong, Hyun-Ho Choi
发表日期
2019/9/5
期刊
IEEE Systems Journal
卷号
14
期号
3
页码范围
4217-4220
出版商
IEEE
简介
In an untrusted relay network where a destination transmits a jamming signal to prevent an untrusted relay from recovering the data sent by a source, we consider imperfect channel reciprocity (ICR) between the relay and the destination. This ICR prevents the destination from removing jamming interference perfectly, meaning that transmit power of the jamming signal has a significant impact on the secrecy rate. In this article, we present a system model of an untrusted relay network with ICR, and verify that the secrecy rate is concave with respect to the jamming power. We derive an asymptotic optimal jamming power to maximize the secrecy rate in closed-form and propose an adaptive scheme for jamming power control (JPC). Numerical results show that the proposed JPC scheme achieves a near-optimal secrecy rate, as well as outperforming conventional schemes by controlling the jamming power adaptively. In …
学术搜索中的文章
K Lee, JP Hong, HH Choi - IEEE Systems Journal, 2019