Optimal Relay Selection for Secure Cooperative Communications With an Adaptive Eavesdropper
| Autor: | Jian Chen, Sergiy A. Vorobyov, Hai Jiang, Long Yang, Hailin Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Scheme (programming language)
OUTAGE INFORMATION Computer science DIVERSITY Jamming Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology Computer security computer.software_genre law.invention 0203 mechanical engineering CHANNEL Relay law 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Selection (genetic algorithm) secrecy outage probability computer.programming_language secrecy diversity order PHYSICAL-LAYER SECURITY ta213 business.industry Applied Mathematics ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS 020206 networking & telecommunications 020302 automobile design & engineering Eavesdropping Computer Science Applications NETWORKS business computer SECRECY Relay channel Optimal relay selection ARTIFICIAL NOISE DESIGN Communication channel Computer network |
| Zdroj: | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS. 16(1):26-42 |
| ISSN: | 1536-1276 |
| Popis: | Optimal relay selection is investigated for secure cooperative communications against an adaptive eavesdropper that can perform eavesdropping if the eavesdropping link has good channel quality or perform jamming otherwise. A number of decode-and-forward relays are available for legitimate communications, among which one relay can be selected to help. For legitimate communications, three cases for availability of the eavesdropping channel information are considered: full channel knowledge, partial channel knowledge, and statistical channel knowledge. An optimal relay selection scheme is proposed for each case. For the first and third cases, exact secrecy outage probability expressions in closed form are derived, and for the second case, an approximate secrecy outage probability is derived, which is tight in the high main-to-eavesdropper ratio regime. Moreover, secrecy diversity order for the proposed relay selection scheme in each case is also derived, which is shown to be a full secrecy diversity. Finally, numerical results are given to verify the theoretical analysis derived in this paper. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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