Journal ArticleDOI
Experimental comparison of performance degradation from terahertz and infrared wireless links in fog
TLDR
A lab setup for analyzing impairments of terahertz (THz) and infrared (IR) free space links caused by local refraction index changes in the signal's propagation paths that could be induced by turbulence, particles, humidity, etc.Abstract:
We describe a lab setup for analyzing impairments of terahertz (THz) and infrared (IR) free space links caused by local refraction index changes in the signal’s propagation paths that could be induced by turbulence, particles, humidity, etc. A THz signal comprising a 2.5 Gb/s data load modulated on a carrier at 625 GHz, is launched through a weather emulating chamber, detected, and its performance analyzed. An IR beam at 1.5 um wavelength carrying the same data load is superposed with the THz beam, propagating through the same weather conditions and also performance analyzed. We modulate the IR channel with a usual non-return-to-zero (NRZ) format but use duobinary coding for driving our THz source, which enables signaling at high data rate and higher output power. As both beams pass through the same channel perturbations and as their degradations are recorded simultaneously we can simultaneously compare the weather impact on both. We investigate scintillation and fog attenuation effects for the THz and IR signals by measuring bit error rates (BER), signal power, and phase front distortions.read more
Citations
More filters
Journal ArticleDOI
Survey on Free Space Optical Communication: A Communication Theory Perspective
TL;DR: An up-to-date survey on FSO communication systems is presented, describing FSO channel models and transmitter/receiver structures and details on information theoretical limits of FSO channels and algorithmic-level system design research activities to approach these limits are provided.
Journal ArticleDOI
Wireless Communications and Applications Above 100 GHz: Opportunities and Challenges for 6G and Beyond
Theodore S. Rappaport,Yunchou Xing,Ojas Kanhere,Shihao Ju,Arjuna Madanayake,Soumyajit Mandal,Ahmed Alkhateeb,Georgios C. Trichopoulos +7 more
TL;DR: This paper offers the first in-depth look at the vast applications of THz wireless products and applications and provides approaches for how to reduce power and increase performance across several problem domains, giving early evidence that THz techniques are compelling and available for future wireless communications.
Journal ArticleDOI
Wireless sub-THz communication system with high data rate
S. Koenig,D. Lopez-Diaz,J. Antes,J. Antes,F. Boes,F. Boes,R. Henneberger,Arnulf Leuther,Axel Tessmann,Rene Schmogrow,Rene Schmogrow,David Hillerkuss,David Hillerkuss,Robert Palmer,Thomas Zwick,Christian Koos,Wolfgang Freude,Oliver Ambacher,Juerg Leuthold,Juerg Leuthold,Ingmar Kallfass,Ingmar Kallfass +21 more
TL;DR: A wireless sub-THz communication system near 237.5 GHz with one to three carriers and up to 100 Gbit/s with state-of-the-art active I/Q-MMIC at the Rx is demonstrated.
Journal ArticleDOI
A Comparative Survey of Optical Wireless Technologies: Architectures and Applications
TL;DR: In this article, the authors provide a technology overview and a review on optical wireless technologies, such as visible light communication, light fidelity, optical camera communication, free space optical communication, and light detection and ranging.
Proceedings ArticleDOI
Wireless sub-THz communication system with high data rate enabled by RF photonics and active MMIC technology
S. Koenig,D. Lopez-Diaz,J. Antes,F. Boes,R. Henneberger,Arnulf Leuther,Axel Tessmann,Rene Schmogrow,David Hillerkuss,Robert Palmer,Thomas Zwick,Christian Koos,Wolfgang Freude,Oliver Ambacher,Juerg Leuthold,Ingmar Kallfass +15 more
TL;DR: In this paper, a single-input and single-output (SISO) wireless communication system with a carrier frequency of 237.5 GHz is presented. But the system is not suitable for large-scale data transmission.
References
More filters
Book
Laser beam propagation through random media
TL;DR: In this paper, a line-of-sight propagation of Gaussian-Beam waves in the atmosphere has been studied in the context of beam statistics mathematica programmes.
Journal ArticleDOI
An introduction to millimeter-wave mobile broadband systems
Zhouyue Pi,Farooq Khan +1 more
TL;DR: This article introduces a millimeter-wave mobile broadband (MMB) system as a candidate next generation mobile communication system and demonstrates the feasibility for MMB to achieve gigabit-per-second data rates at a distance up to 1 km in an urban mobile environment.
Book
Laser Beam Scintillation with Applications
TL;DR: Optical wave propagation in random media is discussed in this paper, where the authors present a background review of the background of optical wave propagation and its application in the field of laser communication systems.
Journal ArticleDOI
Review of terahertz and subterahertz wireless communications
John F. Federici,Lothar Moeller +1 more
TL;DR: The goal of this paper is to provide a comprehensive review of wireless sub-THz and THz communications and report on the reported advantages and challenges of using sub-terahertz andTHz waves as a means to transmit data wirelessly.
Journal ArticleDOI
A Review on Terahertz Communications Research
TL;DR: An overview of emerging technologies and system research that might lead to ubiquitous THz communication systems in the future is given.