Cooperative Decode-and-Forward Relaying for Secure Multicasting
- Authors
- Lee, Jong-Ho; Sohn, Illsoo; Song, Sungju; Kim, Yong-Hwa
- Issue Date
- Oct-2016
- Publisher
- ELECTRONICS TELECOMMUNICATIONS RESEARCH INST
- Keywords
- Physical layer security; multicasting; node cooperation; semidefinite programming
- Citation
- ETRI JOURNAL, v.38, no.5, pp.934 - 940
- Journal Title
- ETRI JOURNAL
- Volume
- 38
- Number
- 5
- Start Page
- 934
- End Page
- 940
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/7841
- DOI
- 10.4218/etrij.16.0115.1029
- ISSN
- 1225-6463
- Abstract
- In this paper, secure multicasting with the help of cooperative decode-and-forward relays is considered for the case in which a source securely sends a common message to multiple destinations in the presence of a single eavesdropper. We show that the secrecy rate maximization problem in the secure multicasting scenario under an overall power constraint can be solved using semidefinite programing with semidefinite relaxation and a bisection technique. Further, a suboptimal approach using zero forcing beamforming and linear programming based power allocation is also proposed. Numerical results illustrate the secrecy rates achieved by the proposed schemes under secure multicasting scenarios.
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