Narrowband characterization of 60 GHz radio propagation in indoor environment

1997 ◽  
Vol 52 (3-4) ◽  
pp. 123-129
Author(s):  
Vittorio Degli-Esposti ◽  
Gabriele Falciasecca ◽  
Mario Frullone ◽  
Guido Riva
Keyword(s):  
Indoor Environment ◽  
Radio Propagation ◽  
60 Ghz

scholarly journals ROUGHNESS CHARACTERIZATION OF AN INDOOR ENVIRONMENT

2011 ◽  
Vol 20 (3) ◽  
pp. 225 ◽  
Author(s):  
Nisrine Douiri ◽  
Majdi Khoudeir ◽  
Christian Olivier
Keyword(s):  
Frequency Analysis ◽  
Indoor Environment ◽  
Image Space ◽  
Level Surface ◽  
60 Ghz ◽  
Original Image ◽  
Grey Level ◽  
Different Types

For a transmission at 60 GHz inside the buildings, the models of propagation currently developed do not take into account the 3D roughness of surfaces under consideration. In this paper, we deal with the evaluation of the 3D roughness of surfaces in this kind of environment. An indoor environment includes different types of surfaces but the most representative of 3D roughness are walls, ceiling and floor. We propose a method to characterise the 3D roughness of these surfaces by constructing an image space made up of the original image, the image of gradient, the image of curvature and the image of the angles between the perpendicular to the grey level surface and the perpendicular to the whole image. The method we have developed is based, first, on the study of correlation variations of our image space, and second on a frequency analysis of the angle image histograms. The elaborated criteria allowed us to classify the surfaces studied.

scholarly journals Spatial characterization of propagation channels for terahertz band

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Bilal Aghoutane ◽  
Mohammed El Ghzaoui ◽  
Hanan El Faylali
Keyword(s):  
Communication Systems ◽  
Indoor Environment ◽  
Channel Model ◽  
Path Loss ◽  
Propagation Loss ◽  
Terahertz Band ◽  
Indoor Scenarios ◽  
Transmission Windows ◽  
Sv Channel

AbstractThe aim of this work consists in characterizing the Terahertz (THz) propagation channel in an indoor environment, in order to propose a channel model for THz bands. We first described a propagation loss model by taking into account the attenuation of the channel as a function of distance and frequency. The impulse response of the channel is then described by a set of rays, characterized by their amplitude, their delay and their phase. Apart from the frequency selective nature, path loss in THz band is also an others issue associated with THz communication systems. This work based on the conventional Saleh-Valenzuela (SV) model which is intended for indoor scenarios. In this paper, we have introduced random variables as Line of sight (LOS) component, and then merging it with the SV channel model to adopt it to the THz context. From simulation, we noted an important effect when the distance between the transmitter and the receiver change. This effect produces variations in frequency loss. The simulations carried out from this model show that to enhance the performance of THz system it is recommended to transmit information over transmission windows instead over the whole band.

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