Effect of body motion on propagation path gain at 60 GHz

2012 ◽  
Author(s):  
Y. I. Nechayev ◽  
X. Wu ◽  
C. C. Constantinou ◽  
P. S. Hall
Keyword(s):  
Body Motion ◽  
Propagation Path ◽  
60 Ghz ◽  
Path Gain

scholarly journals Analysis on the Effects of Materials on Propagation Path in an Indoor Office Environment at 60 GHz

2021 ◽  
Vol 1964 (6) ◽  
pp. 062007
Author(s):  
Karam Shehade ◽  
M Susila ◽  
A G Sreedevi ◽  
T Rama Rao
Keyword(s):  
Propagation Path ◽  
60 Ghz ◽  
Office Environment

scholarly journals Propagation Path Loss Modeling and Outdoor Coverage Measurements Review in Millimeter Wave Bands for 5G Cellular Communications

2018 ◽  
Vol 8 (4) ◽  
pp. 2254 ◽  
Author(s):  
Mohammed B. Majed ◽  
Tharek A. Rahman ◽  
Omar Abdul Aziz
Keyword(s):  
Communication Networks ◽  
Millimeter Wave ◽  
Wide Spectrum ◽  
Path Loss ◽  
Separation Distance ◽  
Propagation Path ◽  
Delay Spread ◽  
Propagation Time ◽  
60 Ghz ◽  
Rms Delay Spread

The global bandwidth inadequacy facing wireless carriers has motivated the exploration of the underutilized millimeter wave (mm-wave) frequency spectrum for future broadband cellular communication networks, and mmWave band is one of the promising candidates due to wide spectrum. This paper presents propagation path loss and outdoor coverage and link budget measurements for frequencies above 6 GHz (mm-wave bands) using directional horn antennas at the transmitter and omnidirectional antennas at the receiver. This work presents measurements showing the propagation time delay spread and path loss as a function of separation distance for different frequencies and antenna pointing angles for many types of real-world environments. The data presented here show that at 28 GHz, 38 GHz and 60 GHz, unobstructed Line of Site (LOS) channels obey free space propagation path loss while non-LOS (NLOS) channels have large multipath delay spreads and can utilize many different pointing angles to provide propagation links. At 60 GHz, there is more path loss and smaller delay spreads. Power delay profiles PDPs were measured at every individual pointing angle for each TX and RX location, and integrating each of the PDPs to obtain received power as a function of pointing angle. The result shows that the mean RMS delay spread varies between 7.2 ns and 74.4 ns for 60 GHz and 28 GHz respectively in NLOS scenario.

scholarly journals Effects of Solar Radio Emissions on Outdoor Propagation Path Loss Models at 60 GHz Bands for Access/Backhaul Links and D2D Communications

2017 ◽  
Vol 65 (12) ◽  
pp. 6624-6635 ◽  
Author(s):  
Ahmed Iyanda Sulyman ◽  
Hussein Seleem ◽  
Abdulmalik Alwarafy ◽  
Khaled M. Humadi ◽  
Abdulhameed Alsanie
Keyword(s):  
Solar Radio ◽  
Path Loss ◽  
Propagation Path ◽  
60 Ghz ◽  
D2d Communications ◽  
Radio Emissions ◽  
Loss Models ◽  
Solar Radio Emissions ◽  
Backhaul Links

scholarly journals Statistical Modeling, Simulation, and Experimental Verification of Wideband Indoor Mobile Radio Channels

2018 ◽  
Vol 2018 ◽  
pp. 1-13
Author(s):  
Yuanyuan Ma ◽  
Bjørn Olav Hogstad ◽  
Matthias Pätzold ◽  
Pedro M. Crespo
Keyword(s):  
Fading Channels ◽  
Experimental Verification ◽  
Communication Systems ◽  
Channel Model ◽  
Reference Model ◽  
Propagation Path ◽  
60 Ghz ◽  
Angle Of Arrival ◽  
Modeling Simulation ◽  
Channel Simulator

This paper focuses on the modeling, simulation, and experimental verification of wideband single-input single-output (SISO) mobile fading channels for indoor propagation environments. The indoor reference channel model is derived from a geometrical rectangle scattering model, which consists of an infinite number of scatterers. It is assumed that the scatterers are exponentially distributed over the two-dimensional (2D) horizontal plane of a rectangular room. Analytical expressions are derived for the probability density function (PDF) of the angle of arrival (AOA), the PDF of the propagation path length, the power delay profile (PDP), and the frequency correlation function (FCF). An efficient sum-of-cisoids (SOC) channel simulator is derived from the nonrealizable reference model by employing the SOC principle. It is shown that the SOC channel simulator approximates closely the reference model with respect to the FCF. The SOC channel simulator enables the performance evaluation of wideband indoor wireless communication systems with reduced realization expenditure. Moreover, the rationality and usefulness of the derived indoor channel model is confirmed by various measurements at 2.4, 5, and 60 GHz.

scholarly journals Enhancing the Capacity of the Indoor 60 GHz Band Via Modified Indoor Environments Using Ring Frequency Selective Surface Wallpapers and Path Loss Models

2018 ◽  
Vol 8 (5) ◽  
pp. 3003
Author(s):  
Nidal Qasem
Keyword(s):  
Communication Systems ◽  
Mimo Systems ◽  
Path Loss ◽  
Propagation Path ◽  
Delay Spread ◽  
Indoor Environments ◽  
60 Ghz ◽  
Loss Models ◽  
Frequency Selective ◽  
Ring Frequency

<span>The 60 GHz band has been selected for short-range communication systems to meet consumers’ needs for high data rates. However, this frequency is attenuated by obstacles. This study addresses the limitations of the 60 GHz band by modifying indoor environments with ring Frequency Selective Surfaces (FSSs) wallpaper, thereby increasing its utilization. The ring FSS wallpaper response at a 61.5 GHz frequency has been analyzed using both MATLAB and Computer Simulation Technology (CST) Microwave Studio (MWS) software. ‘Wireless InSite’ is also used to demonstrate enhanced wave propagation in a building modified with ring FSSs wallpaper. The demonstration is applied to Single Input Single Output (SISO) and Multiple Input Multiple Output (MIMO) systems to verify the effectiveness of FSSs on such systems’ capacity. The effectiveness of the suggested modification over delay spread has been studied for the MIMO scenario, as well as the effect of the human body on capacity. Simulation results presented here show that modifying a building using ring FSS wallpaper is an attractive scheme for significantly improving the indoor 60 GHz wireless communications band. This paper also presents and compares two large-scale indoor propagation Path Loss Models (PLMs), the Close-In (CI) free space reference distance model and the Floating Intercept (FI) model. Data obtained from ‘Wireless InSite’ over distances ranging from 4 to 14.31 m is analyzed. Results show that the CI model provides good estimation and exhibits stable behavior over frequencies and distances, with a solid physical basis and less computational complexity when compared to the FI model. </span>

scholarly journals Estimation of Human Body Vital Signs Based on 60 GHz Doppler Radar Using a Bound-Constrained Optimization Algorithm

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2254 ◽  
Author(s):  
Ting Zhang ◽  
Julien Sarrazin ◽  
Guido Valerio ◽  
Dan Istrate
Keyword(s):  
Constrained Optimization ◽  
Human Body ◽  
Optimization Algorithm ◽  
Large Scale ◽  
Doppler Radar ◽  
Body Motion ◽  
Parallel Optimization ◽  
Physiological Data ◽  
60 Ghz ◽  
Bound Constrained Optimization

In this study, a bound-constrained optimization algorithm is applied for estimating physiological data (pulse and breathing rate) of human body using 60 GHz Doppler radar, by detecting displacements induced by breathing and the heartbeat of a human subject. The influence of mutual phasing between the two movements is analyzed in a theoretical framework and the application of optimization algorithms is proved to be able to accurately detect both breathing and heartbeat rates, despite intermodulation effects between them. Different optimization procedures are compared and shown to be more robust to receiver noise and artifacts of random body motion than a direct spectrum analysis. In case of a large-scale constrained bound, a parallel optimization procedure executed in subranges is proposed to realize accurate detection in a reduced span of time.

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