Title :
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
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;
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
DOI :
10.1109/MC-SS.2011.5910728
