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Journal Article
Energy‐efficient physical layer security schemes for low Earth orbit satellite systems
- Authors
- Satya Chan, Sooyoung Kim, Hee Wook Kim, Bon-Jun Ku, Daesub Oh
- Issue Date
- 2024-09
- Citation
- International Journal of Satellite Communications and Networking, v.42, no.5, pp.374-396
- ISSN
- 1542-0973
- Publisher
- John Wiley & Sons Inc.
- Language
- English
- Type
- Journal Article
- Abstract
- This paper introduces four proposals to enhance physical layer security (PLS) in low Earth orbit (LEO) satellite systems. The first proposal leverages the Alamouti code aided by artificial noise (AN) and involves the collaborative use of two LEO satellites, ensuring secure downlink transmission. Its efficiency is further enhanced when implementing a power-balanced Alamouti code. The second PLS proposal capitalizes on an reconfigurable intelligent surface (RIS) to introduce interference to potential eavesdroppers. As the RIS manages the reflected channel, this security measure is achieved without necessitating additional transmit power or receiver operations. The third proposal integrates the first and second solutions, resulting in improved secrecy rates compared to the individual proposals, nearly reaching the maximum achievable rate. The fourth proposal is based on a relay-based method, securing all transmission links from the satellite to the relay and from the satellite and relay to the legitimate user. The secrecy performance simulation results presented in the paper demonstrate the remarkable effectiveness of the proposed solutions.
- KSP Keywords
- Achievable rate, Alamouti Code, Its efficiency, Low Earth Orbit Satellite, Low earth orbit (LEO) satellite, Physical layer Security(Physec), Satellite system, Transmit Power, artificial noise(AN), performance simulation, relay-based
This work is distributed under the term of Creative Commons License (CCL)
(CC BY NC ND)
(CC BY NC ND)
