scholarly journals Average Transmission Rate and Outage Performance of Relay-Assisted Satellite Hybrid FSO/RF Systems

2021 ◽  
Author(s):  
Thang Nguyen
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Free Space ◽  
System Performance ◽  
Performance Metrics ◽  
Transmission Rate ◽  
Free Space Optical ◽  
Fixed Rate ◽  
Rf Systems ◽  
Average Transmission

<div> <div> <div> <p>This paper proposes a rate adaptation design for high altitude platform (HAP)-aided relaying satellite hybrid free-space optical/radio-frequency (FSO/RF) systems. The design allows switching between two links gradually to reduce the fre- quent link switching in error-prone environments of conventional fixed-rate hybrid FSO/RF systems. System performance metrics, including average transmission rate and outage probability, are analytically studied under the presence of clouds and fading of FSO and RF channels modeled respectively by Gamma-Gamma and Rician distributions. The numerical results quantitatively highlight the effectiveness of our proposed systems over the conventional ones. Moreover, Monte-Carlo simulations are also performed to validate the accuracy of the analytical model. </p> </div> </div> </div>

scholarly journals Average Transmission Rate and Outage Performance of Relay-Assisted Satellite Hybrid FSO/RF Systems

2021 ◽  
Author(s):  
Thang Nguyen
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Free Space ◽  
System Performance ◽  
Performance Metrics ◽  
Transmission Rate ◽  
Free Space Optical ◽  
Fixed Rate ◽  
Rf Systems ◽  
Average Transmission

<div> <div> <div> <p>This paper proposes a rate adaptation design for high altitude platform (HAP)-aided relaying satellite hybrid free-space optical/radio-frequency (FSO/RF) systems. The design allows switching between two links gradually to reduce the fre- quent link switching in error-prone environments of conventional fixed-rate hybrid FSO/RF systems. System performance metrics, including average transmission rate and outage probability, are analytically studied under the presence of clouds and fading of FSO and RF channels modeled respectively by Gamma-Gamma and Rician distributions. The numerical results quantitatively highlight the effectiveness of our proposed systems over the conventional ones. Moreover, Monte-Carlo simulations are also performed to validate the accuracy of the analytical model. </p> </div> </div> </div>

scholarly journals On the Design of Rate Adaptation for Relay-Assisted Satellite Hybrid FSO/RF Systems

2021 ◽  
Author(s):  
Hoang Le ◽  
Thang Nguyen
Keyword(s):  
Satellite Communication ◽  
Performance Metrics ◽  
Transmission Rate ◽  
Rate Adaptation ◽  
Spectrum Efficiency ◽  
Free Space Optical ◽  
Fixed Rate ◽  
Rf Systems ◽  
Average Transmission ◽  
The Impact

<p>This paper addresses the design of hybrid free-space optical/radio frequency (FSO/RF) systems for a high-altitude platform (HAP)-aided relaying satellite communication for mobile networks supported by unmanned aerial vehicle (UAV). While prior work primarily focused on fixed-rate design, which frequently switches between FSO and RF lead to reduce the system performance, we propose a rate adaptation design that gradually adjusts the data rate in each link when its channel state fluctuates. The proposed design's downlink performance is analyzed, taking into account many challenging issues, including beam spreading loss, cloud attenuation, statistical behaviors of the atmospheric turbulence in the dual-hop channel, and pointing misalignment due to the UAV hovering. Different performance metrics are analytically derived based on channel modelings, such as outage probability, average transmission rate, achievable spectrum efficiency, and average transmission rate. The numerical results quantitatively confirm the effectiveness of our proposed system under the impact of UAV hovering misalignment and atmospheric-related issues like clouds and turbulence. Finally, Monte-Carlo simulations validate the accuracy of theoretical results.</p>

scholarly journals On the Design of Rate Adaptation for Relay-Assisted Satellite Hybrid FSO/RF Systems

2021 ◽  
Author(s):  
Hoang Le ◽  
Thang Nguyen
Keyword(s):  
Satellite Communication ◽  
Performance Metrics ◽  
Transmission Rate ◽  
Rate Adaptation ◽  
Spectrum Efficiency ◽  
Free Space Optical ◽  
Fixed Rate ◽  
Rf Systems ◽  
Average Transmission ◽  
The Impact

<p>This paper addresses the design of hybrid free-space optical/radio frequency (FSO/RF) systems for a high-altitude platform (HAP)-aided relaying satellite communication for mobile networks supported by unmanned aerial vehicle (UAV). While prior work primarily focused on fixed-rate design, which frequently switches between FSO and RF lead to reduce the system performance, we propose a rate adaptation design that gradually adjusts the data rate in each link when its channel state fluctuates. The proposed design's downlink performance is analyzed, taking into account many challenging issues, including beam spreading loss, cloud attenuation, statistical behaviors of the atmospheric turbulence in the dual-hop channel, and pointing misalignment due to the UAV hovering. Different performance metrics are analytically derived based on channel modelings, such as outage probability, average transmission rate, achievable spectrum efficiency, and average transmission rate. The numerical results quantitatively confirm the effectiveness of our proposed system under the impact of UAV hovering misalignment and atmospheric-related issues like clouds and turbulence. Finally, Monte-Carlo simulations validate the accuracy of theoretical results.</p>

scholarly journals On the Design of Rate Adaptation for Relay-Assisted Satellite Hybrid FSO/RF Systems

2021 ◽  
Author(s):  
Hoang Le ◽  
Thang Nguyen
Keyword(s):  
Satellite Communication ◽  
Performance Metrics ◽  
Transmission Rate ◽  
Rate Adaptation ◽  
Spectrum Efficiency ◽  
Free Space Optical ◽  
Fixed Rate ◽  
Rf Systems ◽  
Average Transmission ◽  
The Impact

<p>This paper addresses the design of hybrid free-space optical/radio frequency (FSO/RF) systems for a high-altitude platform (HAP)-aided relaying satellite communication for mobile networks supported by unmanned aerial vehicle (UAV). While prior work primarily focused on fixed-rate design, which frequently switches between FSO and RF lead to reduce the system performance, we propose a rate adaptation design that gradually adjusts the data rate in each link when its channel state fluctuates. The proposed design's downlink performance is analyzed, taking into account many challenging issues, including beam spreading loss, cloud attenuation, statistical behaviors of the atmospheric turbulence in the dual-hop channel, and pointing misalignment due to the UAV hovering. Different performance metrics are analytically derived based on channel modelings, such as outage probability, average transmission rate, achievable spectrum efficiency, and average transmission rate. The numerical results quantitatively confirm the effectiveness of our proposed system under the impact of UAV hovering misalignment and atmospheric-related issues like clouds and turbulence. Finally, Monte-Carlo simulations validate the accuracy of theoretical results.</p>

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