Open AccessTerahertz band: Channel modelling for short‐range wireless communications in the spectral windows
Author(s) -
Sheikh Fawad,
Zarifeh Nidal,
Kaiser Thomas
Publication year - 2016
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2016.0022
Subject(s) - channel sounding , transmitter , delay spread , terahertz radiation , broadband , multipath propagation , bandwidth (computing) , frequency band , channel (broadcasting) , power delay profile , impulse response , acoustics , optics , electronic engineering , path loss , physics , telecommunications , wireless , computer science , engineering , mimo , mathematical analysis , mathematics
The channel in the terahertz (THz) band is extremely frequency selective. This study demonstrates a ray‐tracing method for modelling short‐range propagation channels at THz band. The propagation response of sounding bandwidth and centre frequency on power delay profile (PDP) is investigated in five spectral windows with relatively low attenuations and higher available bandwidths which could possibly offer terabit‐per‐second links also. In this approach, a very detailed non‐cubic three‐dimensional model of an ultra‐broadband indoor realistic office environment has been drawn up. Furthermore, the frequency‐dependent standard electrical parameters for the common building materials were taken from the literature. The transmitter (Tx) and the receiver (Rx) are 10 m apart in line‐of‐sight scenario with exactly same height of 1.5 m above the floor. The simulations were performed using 25 dBi horn antennas at the transmitter and receiver sides, respectively, to combat high path loss. These frequency‐dependent horn antennas were designed for the respective five spectral windows. Meanwhile, the corresponding channel impulse response of multipath components with spatial and temporal information such as angle of arrival, angle of departure and time of arrival has been captured to derive PDP models. Up to four reflections (i.e. fourth order) have been considered in the modelling process.