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Performance Analysis of Two-Way Satellite Multi-Terrestrial Relay Networks with Hardware Impairments.

Kefeng Guo¹, Kang An², Bangning Zhang³

¹College of Communication Engineering, Army Engineering University of PLA (Its Old Name Is PLA University of Science and Technology), Nanjing 210007, China. guokefeng.cool@163.com.

Sensors (Basel, Switzerland)

|May 16, 2018

Summary

This study analyzes hybrid satellite-terrestrial networks with hardware impairments, using opportunistic relaying to boost performance. Results show improved spectral efficiency and diversity gain, validated by derived outage probability and throughput expressions.

Keywords:

hardware impairments (HIs)opportunistic relay selection scheme satellite-terrestrial networks two-way terrestrial relays

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Area of Science:

Wireless Communication Networks
Cooperative Communication Systems
Satellite Communication

Background:

Hybrid satellite-terrestrial networks offer enhanced coverage and capacity.
Hardware impairments (HIs) significantly degrade wireless system performance.
Opportunistic relay selection is a key strategy for improving spectral and spatial efficiency.

Purpose of the Study:

To evaluate the performance of a two-way hybrid satellite multi-terrestrial cooperative network considering hardware impairments.
To analyze the impact of opportunistic relay selection on spectral efficiency and spatial diversity gain.
To derive analytical expressions for outage probability and throughput under different relaying protocols.

Main Methods:

Investigated a two-way hybrid satellite multi-terrestrial cooperative network model.
Employed an opportunistic relay selection scheme.
Derived closed-form expressions for outage probability (OP) and throughput using amplify-and-forward (AF) and decode-and-forward (DF) protocols.
Derived asymptotic expressions for high signal-to-noise ratios (SNRs) to analyze the effects of HIs and relay numbers.

Main Results:

The opportunistic relay selection scheme substantially enhances spectral efficiency and spatial diversity gain.
Closed-form expressions for OP and throughput were derived for both AF and DF protocols.
Asymptotic expressions revealed the impact of HIs and the number of terrestrial relays on system performance at high SNRs.

Conclusions:

The analytical results confirm the effectiveness of the opportunistic relay selection scheme in hybrid networks with HIs.
The derived expressions provide valuable tools for performance analysis and system design.
The study highlights the trade-offs between hardware impairments, relaying strategies, and overall network performance.