Mixed THz/FSO Relaying Systems: Statistical Analysis and Performance Evaluation

Sai Li; Liang Yang; Jiayi Zhang; Petros S. Bithas; Theodoros A. Tsiftsis; Mohamed-Slim Alouini

doi:10.1109/twc.2022.3188698

Mixed THz/FSO Relaying Systems: Statistical Analysis and Performance Evaluation

Sai Li, Liang Yang, Jiayi Zhang, Petros S. Bithas, Theodoros A. Tsiftsis, Mohamed-Slim Alouini

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Abstract

In this paper, the performance of a mixed Terahertz/free-space optical (THz/FSO) wireless transmission system is studied, where the joint effects of channel fading and pointing errors are considered for both THz and FSO links. Employing the semi-blind amplify-and-forward protocol, we derive the cumulative distribution function and probability density function of the end-to-end signal-to-noise ratio. By applying the derived statistics, exact expressions for the outage probability (OP), average bit error rate (BER), and average channel capacity are obtained. In order to attain useful physical insights, asymptotic OP and average BER expressions are also presented. Based on them, the diversity gain is determined, which is shown to depend on channel fading and pointing errors of both links. In addition, by taking into account the hardware impairments, the OP of the non-ideal hardware system is derived. Moreover, the analysis is extended to multi-antenna scenarios and the asymptotic OP is obtained. Finally, illustrative numerical results are plotted and it can be observed that the path loss, channel fading, pointing errors and hardware impairments lead to a considerable degradation in system performance.

Original language	English (US)
Pages (from-to)	1-1
Number of pages	1
Journal	IEEE Transactions on Wireless Communications
DOIs	https://doi.org/10.1109/twc.2022.3188698
State	Published - Jul 13 2022

Bibliographical note

KAUST Repository Item: Exported on 2022-09-14
Acknowledgements: This work was supported in part by the Key R&D Projects in Hunan Province under Grant (No. 2022GK2051), the Hunan High-tech Industry Science and Technology Innovation Leading Program Project under Grant (No. 2022GK4004), the Changsha Natural Science Foundation under Grant (No. kq2202172), and in part by the Hunan Natural Science Foundation.

ASJC Scopus subject areas

Applied Mathematics
Computer Science Applications
Electrical and Electronic Engineering

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10.1109/twc.2022.3188698

https://repository.kaust.edu.sa/bitstream/10754/679672/1/Mixed_THz_FSO_Relaying_Systems_Statistical_Analysis_and_Performance_Evaluation.pdf

Cite this

@article{2027401d5ae74dd98fe9b462ec399c81,

title = "Mixed THz/FSO Relaying Systems: Statistical Analysis and Performance Evaluation",

abstract = "In this paper, the performance of a mixed Terahertz/free-space optical (THz/FSO) wireless transmission system is studied, where the joint effects of channel fading and pointing errors are considered for both THz and FSO links. Employing the semi-blind amplify-and-forward protocol, we derive the cumulative distribution function and probability density function of the end-to-end signal-to-noise ratio. By applying the derived statistics, exact expressions for the outage probability (OP), average bit error rate (BER), and average channel capacity are obtained. In order to attain useful physical insights, asymptotic OP and average BER expressions are also presented. Based on them, the diversity gain is determined, which is shown to depend on channel fading and pointing errors of both links. In addition, by taking into account the hardware impairments, the OP of the non-ideal hardware system is derived. Moreover, the analysis is extended to multi-antenna scenarios and the asymptotic OP is obtained. Finally, illustrative numerical results are plotted and it can be observed that the path loss, channel fading, pointing errors and hardware impairments lead to a considerable degradation in system performance.",

author = "Sai Li and Liang Yang and Jiayi Zhang and Bithas, {Petros S.} and Tsiftsis, {Theodoros A.} and Mohamed-Slim Alouini",

note = "KAUST Repository Item: Exported on 2022-09-14 Acknowledgements: This work was supported in part by the Key R&D Projects in Hunan Province under Grant (No. 2022GK2051), the Hunan High-tech Industry Science and Technology Innovation Leading Program Project under Grant (No. 2022GK4004), the Changsha Natural Science Foundation under Grant (No. kq2202172), and in part by the Hunan Natural Science Foundation.",

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doi = "10.1109/twc.2022.3188698",

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journal = "IEEE Transactions on Wireless Communications",

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AU - Li, Sai

AU - Yang, Liang

AU - Zhang, Jiayi

AU - Bithas, Petros S.

AU - Tsiftsis, Theodoros A.

AU - Alouini, Mohamed-Slim

N1 - KAUST Repository Item: Exported on 2022-09-14 Acknowledgements: This work was supported in part by the Key R&D Projects in Hunan Province under Grant (No. 2022GK2051), the Hunan High-tech Industry Science and Technology Innovation Leading Program Project under Grant (No. 2022GK4004), the Changsha Natural Science Foundation under Grant (No. kq2202172), and in part by the Hunan Natural Science Foundation.

PY - 2022/7/13

Y1 - 2022/7/13

N2 - In this paper, the performance of a mixed Terahertz/free-space optical (THz/FSO) wireless transmission system is studied, where the joint effects of channel fading and pointing errors are considered for both THz and FSO links. Employing the semi-blind amplify-and-forward protocol, we derive the cumulative distribution function and probability density function of the end-to-end signal-to-noise ratio. By applying the derived statistics, exact expressions for the outage probability (OP), average bit error rate (BER), and average channel capacity are obtained. In order to attain useful physical insights, asymptotic OP and average BER expressions are also presented. Based on them, the diversity gain is determined, which is shown to depend on channel fading and pointing errors of both links. In addition, by taking into account the hardware impairments, the OP of the non-ideal hardware system is derived. Moreover, the analysis is extended to multi-antenna scenarios and the asymptotic OP is obtained. Finally, illustrative numerical results are plotted and it can be observed that the path loss, channel fading, pointing errors and hardware impairments lead to a considerable degradation in system performance.

AB - In this paper, the performance of a mixed Terahertz/free-space optical (THz/FSO) wireless transmission system is studied, where the joint effects of channel fading and pointing errors are considered for both THz and FSO links. Employing the semi-blind amplify-and-forward protocol, we derive the cumulative distribution function and probability density function of the end-to-end signal-to-noise ratio. By applying the derived statistics, exact expressions for the outage probability (OP), average bit error rate (BER), and average channel capacity are obtained. In order to attain useful physical insights, asymptotic OP and average BER expressions are also presented. Based on them, the diversity gain is determined, which is shown to depend on channel fading and pointing errors of both links. In addition, by taking into account the hardware impairments, the OP of the non-ideal hardware system is derived. Moreover, the analysis is extended to multi-antenna scenarios and the asymptotic OP is obtained. Finally, illustrative numerical results are plotted and it can be observed that the path loss, channel fading, pointing errors and hardware impairments lead to a considerable degradation in system performance.

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JO - IEEE Transactions on Wireless Communications

JF - IEEE Transactions on Wireless Communications

ER -

Mixed THz/FSO Relaying Systems: Statistical Analysis and Performance Evaluation

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