Open AccessIndoor dual polarised radio channel characterisation in the 54 and 70 GHz bands
Author(s) -
Raimundo Xavier,
Salous Sana,
Cheema Adnan
Publication year - 2018
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.2017.0711
Subject(s) - radio frequency , dual (grammatical number) , multi band device , radio spectrum , radio channel , channel (broadcasting) , materials science , optoelectronics , telecommunications , optics , electronic engineering , physics , computer science , engineering , art , antenna (radio) , literature
In this study, results of wideband dual polarised measurements conducted in indoor environments including office, factory, corridor and computer foyer, using state‐of‐the‐art 2×2 multiple‐input–multiple‐output frequency modulated continuous wave‐based channel sounder, are presented. The measurements were performed in two frequency bands with 6 GHz bandwidth, centred at 54 and 70 GHz, with directional steerable ∼20 dBi (18° beamwidth) horn antennas. Using twists at the transmitter and at the receiver simultaneous co‐polar and cross‐polar measurements were performed to quantify the polarisation effects on channel parameters such as angular spread, delay spread and path loss. The results show that the co‐polarised radio links experienced lower angular spread and delay spread compared with the cross‐polarised links. For co‐polarised links, the estimated synthesised omnidirectional path loss exponent was found to be in the range of 1.5–2 (close‐in model) and 0.9–1.9 (log‐distance model) in the respective environments. In individual scenarios, the median cross‐polarisation ratio was found to be within 11.7–14.4 and 7.5–17.6 dB at 54 and 70 GHz, respectively.