2019년 춘계학술대회
Current Result Document :
| 한글제목(Korean Title) |
Physical Layer Security of AF Relay Systems With Jamming. |
| 영문제목(English Title) |
Physical Layer Security of AF Relay Systems With Jamming. |
| 저자(Author) |
Kwadwo Boateng Ofori-Amanfo
Kyoung-Jae Lee
|
| 원문수록처(Citation) |
VOL 23 NO. 01 PP. 0288 ~ 0289 (2019. 05) |
한글내용
(Korean Abstract) |
|
영문내용
(English Abstract) |
This paper studies the secrecy capacity for a wireless cooperative network with perfect channel state information at the relays, and receiver. A similar assumption is also made for the instance where there exist a direct link between the transmitter and receiver. Physical Layer security techniques are employed in wireless networks to mitigate against the activity of eavesdroppers. It offers a viable alternative to computationally intensive encryption. In this paper the design of a protocol utilizing jamming (via jamming nodes) for better security and relaying (via relay nodes) for the amplify-and-forward (AF) operation, is investigated. A a signal-to-noise variant of secrecy known as secrecy gap is explored because of its use of lesser computational power - preferable for practical systems. Thus we maximize this signal-to-noise approach instead of the conventional secrecy capacity maximization method. With this, an iterative algorithm using geometric programming (GP) and semi-definite programming (SDP) is presented with appreciable benefits. The results show here highlight the benefits of using fractional components of the powers of the relays to offer better secrecy capacity. |
| 키워드(Keyword) |
Secrecy
eavesdropper
relay networks
semidefinite programming
power control
capacity
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| 파일첨부 |
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