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Hybrid Satellite-Terrestrial Relay Network: Proposed Model and Application of Power Splitting Multiple Access
Dinh-Thuan Do1, Anh-Tu Le2, Rupak Kharel3
1Department of Computer Science and Information Engineering, College of Information and Electrical Engineering, Asia University, Taichung City 41354, Taiwan.
Sensors (Basel, Switzerland)
|August 6, 2020
Summary
This study evaluates hybrid satellite-terrestrial relay networks (HSTRNs) using non-orthogonal multiple access. It analyzes wireless-powered relays, deriving outage and capacity expressions for amplify-and-forward (AF) and decode-and-forward (DF) protocols.
Area of Science:
- Satellite Communications
- Wireless Networks
- Information Theory
Background:
- Satellite networks evolve slower than terrestrial networks, necessitating integration.
- Hybrid Satellite-Terrestrial Relay Networks (HSTRNs) are crucial for seamless communication.
- Non-orthogonal multiple access (NOMA) is a key technique for HSTRNs.
Purpose of the Study:
- To comprehensively evaluate the performance of HSTRNs using NOMA.
- To analyze the impact of wireless energy harvesting for terrestrial relays.
- To compare amplify-and-forward (AF) and decode-and-forward (DF) relaying protocols.
Main Methods:
- Derivation of closed-form expressions for outage probability.
- Derivation of closed-form expressions for ergodic capacity.
- Performance validation through extensive simulations.
Main Results:
- Characterization of outage performance for AF and DF protocols.
- Characterization of ergodic capacity for AF and DF protocols.
- Validation of derived analytical expressions against simulation results.
Conclusions:
- The study provides a thorough performance analysis of HSTRNs with NOMA.
- Wireless-powered relays and different protocols significantly impact network performance.
- The derived expressions accurately represent the outage and capacity behavior of HSTRNs.
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