Optimal power allocation for secure multi-carrier relay systems

Author

Jeong, Cheol ; Kim, Il-Min

Author_Institution

Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, ON, Canada

fYear

2011

fDate

3-4 May 2011

Firstpage

1

Lastpage

4

Abstract

We study the multi-carrier decode-and-forward relay communication system, where an eavesdropper exists. The source power and relay power are optimized over all subcarriers to maximize the sum secrecy rate under a total system power constraint. From the power allocation result, an optimal transmission strategy is determined among no transmission, direct transmission, and relay transmission on each subcarrier. In numerical results, the performance of the optimal power allocation is evaluated and compared for various scenarios.

Keywords

decode and forward communication; optimisation; telecommunication security; eavesdropper; multicarrier decode-and-forward relay communication system; multicarrier relay system security; optimal power allocation; optimal transmission strategy; relay power optimization; source power optimization; sum secrecy rate maximization; Communication system security; Optimization; Relays; Resource management; Security; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Multi-Carrier Systems & Solutions (MC-SS), 2011 8th International Workshop on

Conference_Location

Herrsching

Print_ISBN

978-1-61284-885-3

Electronic_ISBN

978-1-61284-886-0

Type

conf

DOI

10.1109/MC-SS.2011.5910728

Filename

5910728