AI Article Synopsis
- This paper examines how to secure communications in energy harvesting untrusted relay networks using jamming signals from the destination.
- Four transmission and reception schemes (MRT, TAS for transmission; MRC, RAS for reception) are analyzed, leading to the derivation of secrecy outage probability (SOP) and connection outage probability (COP) for each scheme.
- Simulation results show that the MRT and MRC scheme generally performs better in terms of effective secrecy throughput (EST), but under high signal-to-noise ratio conditions, TAS outperforms MRT, and there is an optimal number of antennas for maximizing EST.
Article Abstract
This paper investigates secure communications of energy harvesting untrusted relay networks, where the destination assists jamming signal to prevent the untrusted relay from eavesdropping and to improve the forwarding ability of the energy constrained relay. Firstly, the source and the destination transmit the signals to the relay with maximal ratio transmission (MRT) technique or transmit antenna selection (TAS) technique. Then, the destination utilizes maximal ratio combining (MRC) technique or receive antenna selection (RAS) technique to receive the forwarded information. Therefore, four transmission and reception schemes are considered. For each scheme, the closed-form expressions of the secrecy outage probability (SOP) and the connection outage probability (COP) are derived. Besides, the effective secrecy throughput (EST) metric is analyzed to achieve a good tradeoff between security and reliability. In addition, the asymptotic performance of EST is also considered at the high signal-to-noise ratio (SNR). Finally, simulation results illustrate that: (1) the EST of the system with MRT and MRC scheme are superior to other schemes, however, in the high SNR regime, the EST of the system with MRT scheme is inferior to TAS; and (2) for the source node, there exists an optimal number of antennas to maximize the EST of the proposed schemes.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6338946 | PMC |
| http://dx.doi.org/10.3390/s19010076 | DOI Listing |
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