Improving Secrecy Performance of a Wirelessly Powered Network
Improving Secrecy Performance of a Wirelessly Powered Network
复制标题
提高无线供电网络的保密性能
DOI:
10.1109/tcomm.2017.2732449
复制
发表时间:
2017-11
影响因子:
8.3
通讯作者:
Xuchu Dai
中科院分区:
文献类型:
--
作者:
Zhuo Chen;Lucinda Hadley;Zhiguo Ding;Xuchu Dai
This paper considers the secrecy communication of a wirelessly powered network, where an energy-constrained legitimate transmitter (Alice) sends message to a legitimate receiver (Bob) with the energy harvested from a dedicated power beacon, while an eavesdropper (Eve) intends to intercept the information. A simple time-switching protocol with a time-switching ratio <inline-formula> <tex-math notation="LaTeX">$\alpha $ </tex-math></inline-formula> is used to supply power for the energy-constrained legitimate transmitter. To improve the physical layer security, we first propose a protocol that combines maximum ratio transmission with zero-forcing (ZF) jamming for the case without Eve’s channel state information (CSI), i.e., Alice has access to Bob’s CSI only. Then, we propose a protocol that uses a ZF transmitting strategy to minimize the signal-to-noise ratio (SNR) at Eve for the case that Alice is capable of obtaining partial CSI related to Eve. Closed-form expressions and simple approximations of the connection outage probability and secrecy outage probability are derived for both protocols. Furthermore, the secrecy throughput as well as the diversity orders achieved by our proposed protocols are characterized, and the optimal time-switching ratio <inline-formula> <tex-math notation="LaTeX">$\alpha $ </tex-math></inline-formula> and power allocation coefficient <inline-formula> <tex-math notation="LaTeX">$\beta $ </tex-math></inline-formula> for secrecy throughput maximization are derived in the high SNR regime. Finally, numerical results validate the effectiveness of the proposed schemes.
登录
查看更多内容
DOI:
10.1109/lcomm.2016.2598327
发表时间:
2016-09
期刊:
IEEE Communications Letters
影响因子:
--
作者:
Yanan Wu;Xiaoming Chen;C. Yuen;C. Zhong
通讯作者:
Yanan Wu;Xiaoming Chen;C. Yuen;C. Zhong
影响因子:
8.3
作者:
Xin Jiang;C. Zhong;Xiaoming Chen;T. Duong;T. Tsiftsis;Zhaoyang Zhang
通讯作者:
Xin Jiang;C. Zhong;Xiaoming Chen;T. Duong;T. Tsiftsis;Zhaoyang Zhang
影响因子:
11.2
作者:
Ding, Zhiguo;Zhong, Caijun;Poor, H. Vincent
通讯作者:
Poor, H. Vincent
DOI:
10.1109/twc.2013.031813.120224
发表时间:
2013-05-01
影响因子:
10.4
作者:
Zhang, Rui;Ho, Chin Keong
通讯作者:
Ho, Chin Keong
影响因子:
11.2
作者:
Huang, Kaibin;Zhou, Xiangyun
通讯作者:
Zhou, Xiangyun