4. THz transmission links
4.1 Modulation and performance indicators for a THz communication link
In the THz range, various approaches have been followed, coming from microwave domains, long-distance optical communications, coherent optical communications, and even more conventional radio domains. As a result, digital amplitude modulations and phase/amplitude vector modulations (QPSK, QAM-16, QAM-32 and beyond) are used.
Remember that the main advantage of vector modulation is to optimize bandwidth with the highest possible spectral efficiency (bit/s/Hz).
The spectral efficiency of a modulation, defined by the ratio of bit rate to bandwidth used, in bit/s/Hz, is the parameter to be optimized in order to maximize the amount of...
The Ultimate Scientific and Technical Reference
This article is included in
Control and systems engineering
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
THz transmission links
Standardization for 100 Gbit/s at THz
Bibliography
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
VDI Inc USA
http://www.vdicommunications.com/wireless-networks/
RPG Radiometer Physics
https://www.radiometer-physics.de/
...
The Ultimate Scientific and Technical Reference
