Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Errors in Global Positioning System01:26

Errors in Global Positioning System

40
Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
40
Common Leveling Mistakes and Errors01:17

Common Leveling Mistakes and Errors

64
A survey team is tasked with determining the elevation difference between points Point A and Point B, separated by uneven terrain. They use a leveling instrument and a leveling rod.Common MistakesMisreading the Rod: During a backsight reading at Point A, the instrumentman observes the rod partially obscured by tall grass. Instead of reading 1.135 m, they mistakenly record 1.735 m due to the misalignment of the crosshair with the wrong graduation. This error adds 0.600 m to all subsequent...
64
Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

3.3K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
3.3K
Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

88
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
88
Linear Approximation in Time Domain01:21

Linear Approximation in Time Domain

72
Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
72
NMR Spectrometers: Resolution and Error Correction01:14

NMR Spectrometers: Resolution and Error Correction

679
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
679

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Intelligent Fault Diagnosis of Rolling Element Bearings Based on Modified AlexNet.

Sensors (Basel, Switzerland)·2023
Same author

[HER2 promotes cell migration via inhibiting the expression of E-cadherin in human mammary epithelial cells].

Xi bao yu fen zi mian yi xue za zhi = Chinese journal of cellular and molecular immunology·2017
Same author

Suppression of cucumber stachyose synthase gene (CsSTS) inhibits phloem loading and reduces low temperature stress tolerance.

Plant molecular biology·2017
Same author

Prognostic Factors for Recovery of Patients After Surgery for Thoracic Spinal Tuberculosis.

World neurosurgery·2017
Same author

NaK alloy-induced in vivo tumor ablation therapy.

Minimally invasive therapy & allied technologies : MITAT : official journal of the Society for Minimally Invasive Therapy·2017
Same author

Robust Granger Analysis in Lp Norm Space for Directed EEG Network Analysis.

IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society·2017

Related Experiment Video

Updated: Jun 14, 2025

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

10.8K

Precise Error Performance of BPSK Modulated Coherent Terahertz Wireless LOS Links with Pointing Errors.

Mingbo Niu1, Ruihang Ji1, Hucheng Wang1

  • 1Internet of Vehicle2 to Road Research Laboratory, School of Energy and Electrical Engineering, Chang'an University, 356 Changda Nan Lu, Xi'an 710018, China.

Entropy (Basel, Switzerland)
|August 29, 2024
PubMed
Summary

Terahertz (THz) communication offers energy efficiency for green systems. This study analyzes coherent THz links, finding atmospheric turbulence and pointing errors significantly impact bit error rate and interrupt probability.

Keywords:
atmospheric turbulencebinary phase-shift keyingcoherent THzoutage probabilitypointing errors

More Related Videos

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
09:36

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements

Published on: June 25, 2021

3.0K
Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
14:18

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

11.4K

Related Experiment Videos

Last Updated: Jun 14, 2025

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

10.8K
Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
09:36

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements

Published on: June 25, 2021

3.0K
Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
14:18

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

11.4K

Area of Science:

  • Wireless communication
  • Terahertz (THz) technology
  • Optical wireless communication

Background:

  • Terahertz (THz) communication is a promising green communication technology due to its energy efficiency.
  • Coherent THz transmission is an emerging area, but its error performance in terrestrial links requires further investigation.
  • Existing research lacks comprehensive error performance analysis for coherent THz wireless links.

Purpose of the Study:

  • To develop a terrestrial channel model for line-of-sight wireless communication at THz frequencies.
  • To analyze the error performance of coherent THz links, considering atmospheric turbulence and pointing errors.
  • To derive exact and asymptotic solutions for bit error rate and interrupt probability in coherent THz systems.

Main Methods:

  • Development of a comprehensive terrestrial channel model for THz frequencies.
  • Analysis of coherent THz link performance under atmospheric turbulence (log-normal and Gamma-Gamma channels) and pointing errors.
  • Derivation of exact and asymptotic solutions for bit error rate (BER) and interrupt probability.
  • Asymptotic outage probability analysis.

Main Results:

  • Identified atmospheric turbulence and pointing errors as key factors affecting coherent THz link performance.
  • Provided exact and asymptotic solutions for BER and interrupt probability for binary phase-shift keying (BPSK) coherent THz systems.
  • Demonstrated the impact of turbulence and pointing errors on system reliability and performance.
  • The derived solutions offer precise estimations for coherent THz transmission performance and link budget.

Conclusions:

  • Coherent THz communication performance is significantly influenced by terrestrial channel impairments like atmospheric turbulence and pointing errors.
  • The derived analytical models provide accurate tools for evaluating and designing coherent THz wireless systems.
  • This work contributes to understanding the link budget and error performance crucial for deploying energy-efficient THz communication networks.