Journal ArticleDOI
Link Budget Analysis for Terahertz Fixed Wireless Links
TLDR
High data rates can only be transmitted via these links if transmitter and receiver antennas with very high gains are used, and this requires an adaptive control of mechanical fluctuations.Abstract:
Due to the broad bandwidths, terahertz (THz)-waves offer the possibility for wireless transmission of high data rates. Especially, broadband wireless access over short ranges and fixed wireless links based on THz-waves are very promising. They can be incorporated as a bridge for optical networks or an alternative for the connection of wireless stations in difficult environments, to transmit next generation HDTV signals or for the broadband connection of servers in a data center, for instance. The frequency range between 300 and 900 GHz is very promising for these applications since the possible bandwidth is very high and first electronic circuits will become available on the market soon. However, contrary to wireless links in the lower GHz-bands, the free-space path-loss is quite high and the attenuation due to molecules in the air or water droplets can significantly decrease the transmittable data rates in this frequency range. Here the basic properties of THz-waves will be investigated and the maximum achievable data rates for fixed wireless THz-links will be derived. In order to keep the considerations as general as possible, the derivations are based on simple assumptions and equations. Additionally, conclusions for the applicability of THz-waves for fixed wireless links with distances up to 1 km will be given and the special requirements for these systems will be discussed. As we will show, high data rates can only be transmitted via these links if transmitter and receiver antennas with very high gains are used. This requires an adaptive control of mechanical fluctuations.read more
Citations
More filters
Proceedings ArticleDOI
Propagation Measurements for Indoor Wireless Communications at 350/650 GHz
TL;DR: The results show that multiple spatially resolvable paths exist, and they can be associated with the propagation environment closely, and the necessity of utilizing both the LoS and NLoS paths to keep the communication reliable.
Journal ArticleDOI
Design and analysis of novel microstrip patch antenna array based on photonic crystal in THz
Mohamed Elamine Benlakehal,Abdesselam Hocini,D. Khedrouche,Mohamed Nasr eddine Temmar,Tayeb A. Denidni +4 more
Proceedings ArticleDOI
Attenuation Analysis of THz/IR Waves Under Different Turbulence Conditions Using Gamma-Gamma Model
TL;DR: In this article, the attenuation of terahertz (THz) and infrared (IR) waves under different weather turbulence conditions has been studied, and the gamma-gamma model has been utilized to model the weak to the strong turbulent media, and frequency-dependent attenuation plots for both THz and IR waves have been derived theoretically and compared to the available experimental results in the literature.
Journal ArticleDOI
SNR Optimization for LEO Satellite at Sub-THz Frequencies
Rajnish Kumar,Shlomi Arnon +1 more
TL;DR: In this article , the authors derived an optimization algorithm for an electronically switchable subarray of phased array at the ground station that maximizes the signal-to-noise ratio (SNR) depending on the range of elevation angles of satellite.
Proceedings ArticleDOI
MOTH- Mobility-induced Outages in THz: A Beyond 5G (B5G) application
TL;DR: In this paper, the authors proposed two methods to predict mobility-induced outage scenarios: (i) Align-After-Failure (AAF), which predicts based on fixed time margins, and (ii) Adjusting-Before-Failure(ABF), which learns the time margins through user mobility patterns.
References
More filters
Journal ArticleDOI
A mathematical theory of communication
TL;DR: This final installment of the paper considers the case where the signals or the messages or both are continuously variable, in contrast with the discrete nature assumed until now.
Journal ArticleDOI
A Note on a Simple Transmission Formula
TL;DR: In this paper, a simple transmission formula for a radio circuit is derived, and the utility of the formula is emphasized and its limitations are discussed, as well as its utility and limitations.
Journal ArticleDOI
Present and Future of Terahertz Communications
Ho-Jin Song,Tadao Nagatsuma +1 more
TL;DR: The current progress of terahertz-wave technologies related to communications applications are examined and some issues that need to be considered for the future of THz communications are discussed.
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
Short-Range Ultra-Broadband Terahertz Communications: Concepts and Perspectives
R. Piesiewicz,Thomas Kleine-Ostmann,N. Krumbholz,Daniel M. Mittleman,Martin Koch,Joerg Schoebel,Thomas Kurner +6 more
TL;DR: It is demonstrated that a directed NLOS path scheme will make a terahertz communication system robust to shadowing, and it is shown that dielectric mirrors covering only parts of the walls will significantly enhance the signal coverage in a typical indoor scenario.