Performance Analysis of Dual-Hop THz Transmission Systems over α-μ Fading Channels with Pointing Errors

In this paper, the performance of a dual-hop relaying terahertz (THz) wireless communication system is investigated. In particular, the behaviors of the two THz hops are determined by three factors, such as the deterministic path loss, the fading effects, and pointing errors. Assuming that both THz...

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Published inIEEE internet of things journal Vol. 9; no. 14; p. 1
Main Authors Li, Sai, Yang, Liang
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 15.07.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Asymptotic properties
Bit error rate
Channel capacity
Codes
Distribution functions
dual-hop transmission
Fading
Mathematical analysis
Monte Carlo simulation
multi-relay
Performance evaluation
Performance measurement
Probability density function
Probability density functions
Radio frequency
Rayleigh channels
Relaying
relaying systems
Relays
Signal to noise ratio
Statistical analysis
Terahertz wireless communications
Wireless communication
Wireless communication systems
Online AccessGet full text
ISSN2327-4662
2327-4662
DOI10.1109/JIOT.2021.3131978

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Abstract In this paper, the performance of a dual-hop relaying terahertz (THz) wireless communication system is investigated. In particular, the behaviors of the two THz hops are determined by three factors, such as the deterministic path loss, the fading effects, and pointing errors. Assuming that both THz links are subject to the α-μ fading with pointing errors, we derive exact expressions for the cumulative distribution function (CDF) and probability density function (PDF) of the end-to-end signal-to-noise ratio (SNR). With these statistical expressions, some important performance metrics are evaluated, like the outage probability, average bit error rate, and average channel capacity. Moreover, the asymptotic analyses are presented to obtain more insights. Results show that the dual-hop relaying scheme has better performance than the single THz link. Furthermore, the system diversity order depends on the fading parameters and pointing errors of both THz links. In addition, we extend the analysis to a multi-relay cooperative diversity system and derive the asymptotic symbol error rate expressions. Finally, the derived analytical expressions are verified by the Monte Carlo simulation.
AbstractList In this article, the performance of a dual-hop relaying terahertz (THz) wireless communication system is investigated. In particular, the behaviors of the two THz hops are determined by three factors, such as the deterministic path loss, fading effects, and pointing errors. Assuming that both THz links are subject to the [Formula Omitted]-[Formula Omitted] fading with pointing errors, we derive exact expressions for the cumulative distribution function (CDF) and probability density function (PDF) of the end-to-end signal-to-noise ratio (SNR). With these statistical expressions, some important performance metrics are evaluated, such as the outage probability (OP), average bit error rate (BER), and average channel capacity (ACC). Moreover, the asymptotic analyses are presented to obtain more insights. The results show that the dual-hop relaying scheme has better performance than the single THz link. Furthermore, the system diversity order depends on the fading parameters and pointing errors of both THz links. In addition, we extend the analysis to a multirelay cooperative diversity system and derive the asymptotic symbol error rate (SER) expressions. Finally, the derived analytical expressions are verified by the Monte Carlo simulation.
In this paper, the performance of a dual-hop relaying terahertz (THz) wireless communication system is investigated. In particular, the behaviors of the two THz hops are determined by three factors, such as the deterministic path loss, the fading effects, and pointing errors. Assuming that both THz links are subject to the α-μ fading with pointing errors, we derive exact expressions for the cumulative distribution function (CDF) and probability density function (PDF) of the end-to-end signal-to-noise ratio (SNR). With these statistical expressions, some important performance metrics are evaluated, like the outage probability, average bit error rate, and average channel capacity. Moreover, the asymptotic analyses are presented to obtain more insights. Results show that the dual-hop relaying scheme has better performance than the single THz link. Furthermore, the system diversity order depends on the fading parameters and pointing errors of both THz links. In addition, we extend the analysis to a multi-relay cooperative diversity system and derive the asymptotic symbol error rate expressions. Finally, the derived analytical expressions are verified by the Monte Carlo simulation.
Author Li, Sai
Yang, Liang
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  fullname: Yang, Liang
  organization: College of Computer Science and Electronic Engineering, Hunan University, Changsha 410082, China. (e-mail: liangy@hnu.edu.cn)
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Snippet In this paper, the performance of a dual-hop relaying terahertz (THz) wireless communication system is investigated. In particular, the behaviors of the two...
In this article, the performance of a dual-hop relaying terahertz (THz) wireless communication system is investigated. In particular, the behaviors of the two...
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SubjectTerms Asymptotic properties
Bit error rate
Channel capacity
Codes
Distribution functions
dual-hop transmission
Fading
Mathematical analysis
Monte Carlo simulation
multi-relay
Performance evaluation
Performance measurement
Probability density function
Probability density functions
Radio frequency
Rayleigh channels
Relaying
relaying systems
Relays
Signal to noise ratio
Statistical analysis
Terahertz wireless communications
Wireless communication
Wireless communication systems
Title Performance Analysis of Dual-Hop THz Transmission Systems over α-μ Fading Channels with Pointing Errors
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