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Energy-efficient secure multiuser scheduling in energy harvesting untrusted relay networks
- Source :
- Journal of Communications and Networks. 21:365-375
- Publication Year :
- 2019
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2019.
-
Abstract
- In this paper, we investigate opportunistic secure multiuser scheduling in energy harvesting untrusted relay networks, where an energy-constrained amplify-and-forward (AF) relay harvests energy from the received radio frequency signal via using the power splitting protocol. To exploit the potential advantages (e.g., multiuser diversity and direct links) for secrecy improvement, we examine three opportunistic user scheduling schemes, i.e., optimal scheduling scheme, maximum scheduling scheme, and minimum scheduling scheme. Specifically, the optimal scheduling scheme performs user selection by maximizing the ratio between the signal-to-noise-ratio (SNR) at the destination and the corresponding SNR at the untrusted relay. The maximum scheduling scheme is conventional user selection that maximizes the channel gain of the direct links. For the minimum scheduling scheme, we try to reduce the overheard information at the untrusted relay by selecting the user with the lowest channel gain of the relay links. For these three schemes, we comprehensively examine the achievable secrecy performance including probability of positive secrecy rate, secrecy outage probability (SOP), asymptotic SOP, secrecy throughput (ST), as well as secure energy efficiency (SEE) to help facilitate an energy-efficient secure transmission design. Simulation results demonstrate that the maximum scheduling scheme outperforms the minimum scheduling scheme in terms of SOP at relatively low SNRs and target secrecy rates.
- Subjects :
- Exploit
Computer Networks and Communications
Computer science
business.industry
020206 networking & telecommunications
Data_CODINGANDINFORMATIONTHEORY
02 engineering and technology
law.invention
Scheduling (computing)
Relay
law
Secrecy
Computer Science::Networking and Internet Architecture
0202 electrical engineering, electronic engineering, information engineering
Wireless
business
Computer Science::Operating Systems
Energy harvesting
Secure transmission
Computer Science::Cryptography and Security
Computer Science::Information Theory
Information Systems
Efficient energy use
Computer network
Subjects
Details
- ISSN :
- 19765541 and 12292370
- Volume :
- 21
- Database :
- OpenAIRE
- Journal :
- Journal of Communications and Networks
- Accession number :
- edsair.doi...........6fe2715e00780c4caf77d83426d12843