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
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Journal ArticleDOI
Terahertz wireless data communication
TL;DR: The objective of this paper is to describe the important issues related to the transmission in of ThWDC in air environment and to determine the best transmission windows in the THz range and to investigate the performance of future terabit super channels implemented using bipolar phase-shift-keying.
Journal ArticleDOI
Terahertz Channel Propagation Phenomena, Measurement Techniques and Modeling for 6G Wireless Communication Applications: A Survey, Open Challenges and Future Research Directions
TL;DR: Insight is provided into THz channel propagation characteristics, measurement capabilities and modeling methods along with recommendations that will aid in the development of future models in the THz band and the challenges and limitations of measurements and modeling at such high frequencies.
Proceedings ArticleDOI
A new look to 275 to 400 GHz band: Channel model and performance evaluation
Evangelos N. Papasotiriou,Joonas Kokkoniemi,Alexandros-Apostolos A. Boulogeorgos,Janne Lehtomaki,Angeliki Alexiou,Markku Juntti +5 more
TL;DR: A novel two-path channel model for wireless terahertz (THz) systems operating in the range of 275 to 400 GHz is presented, which accommodates both the channel particularities and the transceivers parameters.
Proceedings ArticleDOI
An Ultra Low-Loss Silicon-Micromachined Waveguide Filter for D-Band Telecommunication Applications
James Campion,Oleksandr Glubokov,Adrian Gomez,Aleksandr Krivovitca,Umer Shah,Lars Bolander,Yinggang Li,Joachim Oberhammer +7 more
TL;DR: In this paper, a very low-loss micromachined waveguide bandpass filter for use in D-band (110-170 GHz) telecommunication applications is presented, and the measured insertion loss per unit length of the waveguide technology (0.008-0.016dB/mm).
Journal ArticleDOI
Silicon Micromachined D-Band Diplexer Using Releasable Filling Structure Technique
Xinghai Zhao,Oleksandr Glubokov,James Campion,Adrian Gomez-Torrent,Aleksandr Krivovitca,Umer Shah,Joachim Oberhammer +6 more
TL;DR: In this paper, a D-band waveguide diplexer, implemented by silicon micromachining using releasable filling structure (RFS) technique to obtain high-precision geometries, is presented.
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.