652 Hits in 4.7 sec

Channel Loss Estimation and Test of Ultra-Wideband Propagation from 2 to 10 GHz Application

Lei Gao, Qun Chen
2017 Indonesian Journal of Electrical Engineering and Computer Science  
The results show that in the environments of 2 to 10 GHz short range application, IEEE 802.15.4a channel loss model is a high precision reference model for the ultra-wideband channel loss calculation.  ...  <p>This paper deals with the channel loss models of ultra-wideband radio wave propagation from 2 to 10 GHz application.  ...  The test results show that in the environments of 2 to 10 GHz short range application, IEEE 802.15.4a channel loss model is a high precision reference model for the ultra-wideband channel loss calculation  ... 
doi:10.11591/ijeecs.v6.i3.pp663-670 fatcat:a2dokvqcmbgdrbcj6deswqmjiy

Reliable Line-Of-Sight And Non-Line-Of-Sight Propagation Channel Identification In Ultra-Wideband Wireless Networks

Mohamed Adnan Landolsi, Ali F. Almutairi
2016 Zenodo  
The paper addresses the problem of line-of-sight (LOS) vs. non-line-of-sight (NLOS) propagation link identification in ultra-wideband (UWB) wireless networks, which is necessary for improving the accuracy  ...  Correct LOS/NLOS channel identification rates exceeding 90% are shown to be achievable for most types of environments.  ...  With the known LOS/NLOS PDFs, and for a measured CIR realization of unknown type in a given environment (e.g., office, outdoors, etc.), the CIR SKW and RMSD parameters are computed and used for the evaluation  ... 
doi:10.5281/zenodo.1128198 fatcat:mmsmt656h5amhiy66dk5ye5chu

Wideband Channel Characterization for 6G Networks in Industrial Environments

Ahmed Al-Saman, Marshed Mohamed, Michael Cheffena, Arild Moldsvor
2021 Sensors  
This paper presents the radio channel measurements to study the channel characteristics of 6G networks in the 107–109 GHz band in three different industrial environments.  ...  Two popular path loss models for indoor environments, the close-in free space reference distance (CI) and floating intercept (FI), are used to examine the path loss.  ...  As the indoor environments, including industrial environments, represent rich sources of scattering objects for radio channel propagation, an extensive THz channel characterization for indoor scenarios  ... 
doi:10.3390/s21062015 pmid:33809235 fatcat:d7hpxi7ld5gx7aqn5lflq7tmke

Performance analysis of ultra wide band indoor channel

Kazi Afrina Yasmeen, A. K. M. Wahiduzzaman, Ahamed Imtiaz, M. A. Matin
2008 2008 Mosharaka International Conference on Communications, Propagation and Electronics  
in ultra-wideband (UWB) technology for communication within short range, because of its huge bandwidth and low radiated power level.  ...  In order to build systems that realize all the potential of UWB, it is first required to understand UWB propagation and the channel properties arise from the propagation. In this  ...  CONCLUSION The objective of this thesis was to evaluate the performance of UWB channel for indoor environment. This paper illustrated a variety of topics related to ultra-wideband communications.  ... 
doi:10.1109/miccpe.2008.4555754 fatcat:tvu4o5kjsbhplog4k5of2fzshe

Analytical Approach to Model the Fade Depth and the Fade Margin in UWB Channels

Gonzalo Llano, Juan Reig, Lorenzo Rubio
2010 IEEE Transactions on Vehicular Technology  
In this letter, the variations of the ultra-wideband (UWB) channel power as a function of the channel bandwidth are investigated.  ...  The approach is based on the IEEE 802.15.4a ultra-wideband channel model and the assumption that the channel power can be modeled by a Gamma distribution.  ...  = L -L - > ë û . (3) Due to the discrepancy in the fitting for indoor residential, and indoor and outdoor office environments [9] , the TG4a proposes to model the ray arrival times with mixtures of two  ... 
doi:10.1109/tvt.2010.2070815 fatcat:ohgd36qvczdejpjwx5pgqpxwba

An Empirical Ultra Wideband Channel Model for Indoor Laboratory Environments

A. Abolghasemi, R. Karimzadeh-Baee, N. Noori
2009 Radioengineering  
Channel measurement and modeling is an important issue when designing ultra wideband (UWB) communication systems.  ...  The measurements have been performed for both line of sight (LOS) and non-LOS (NLOS) scenarios.  ...  Acknowledgements The authors would like to express their sincere thanks to the staffs of the Communication Technology and Type Approval Lab for their contributions during the measurement campaign.  ... 
doaj:9eb84634f2524680b4b5ebb280c07b39 fatcat:5lqk56xudjcvheftmni2zcyxj4

Directional channel model for ultra-wideband indoor applications

Malgorzata Janson, Thomas Fugen, Thomas Zwick, Werner Wiesbeck
2009 2009 IEEE International Conference on Ultra-Wideband  
In this paper a hybrid ray tracing/statistical channel model for the ultra-wideband (UWB) frequency range is proposed.  ...  The parameters of the scatterers are derived from the measurements of reflection from typical indoor walls. ICUWB  ...  INTRODUCTION Ultra wideband (UWB) technology recently became a topic of great interest and attracts a growing number of researchers.  ... 
doi:10.1109/icuwb.2009.5288768 fatcat:3f6vzpjoqvgrnhnwhaepqotppm

IRACON channel measurements and models [chapter]

Sana Salous, Davy Gaillot, Jose-Maria Molina-Garcia-Pardo, Ruisi He, Kentaro Saito, Ke Guan, Marina Barbiroli, Juan Pascual-Garcia, Katsuyuki Haneda
2021 Inclusive Radio Communications for 5G and Beyond  
Cellular scenarios [ODV17] reports 8 × 8 MIMO channel measurements at 3.8 GHz, in urban microcell environment in Louvain-la-Neuve. Fig. 3.1 shows an example of the results.  ...  Inclusive Radio Communications for 5G and Beyond. https://doi.49 50 CHAPTER 3 IRACON channel measurements and models of measurements and research on emerging communication scenarios, such as bodyto-body  ...  The measurements are performed with an ultra-wideband channel sounder at a center frequency of 5.7 GHz with a bandwidth of 1 GHz.  ... 
doi:10.1016/b978-0-12-820581-5.00009-2 fatcat:ucaoi4p6bzcgxcn4tizr4of4hq

Finding a closest match between Wi-Fi propagation measurements and models

Burjiz Soorty, Nurul I Sarkar
2015 2015 2nd Asia-Pacific World Congress on Computer Science and Engineering (APWC on CSE)  
In a series of papers by Sarkar and his team conducted radio propagation measurements to study the performance of Wi-Fi in terms of received signal strengths (RSS) in an obstructed office block.  ...  We found about 94% and 99% matching with RSS measurement results for non-LOS and NLOS conditions, respectively.  ...  We compared RSS measurement results (obtained in the obstructed office block at AUT University) with the calculated RSS values for Free-space, Two-ray ground reflection, shadowing path loss, and the overall  ... 
doi:10.1109/apwccse.2015.7476235 fatcat:pfbjjioopbb33lmpmgc7tddq7a

IEEE Access Special Section Editorial: Millimeter-Wave and Terahertz Propagation, Channel Modeling, and Applications

Vittorio Degli-Esposti, Franco Fuschini, Henry L. Bertoni, Reiner S. Thoma, Thomas Kurner, Xuefeng Yin, Ke Guan
2021 IEEE Access  
Narrowband and wideband channel characterization is carried out, based on both experimental measurements and ray-tracing simulations.  ...  A ray tracing-based characterization of 300 GHz channels is conducted for urban and highway scenarios in ''Characterization for the vehicle-to-infrastructure channel in urban and highway scenarios at the  ... 
doi:10.1109/access.2021.3076326 fatcat:bcbisoctxvhvbb4fni4f5kbgbi

The Impact of Different Radio Propagation Models for Mobile Ad hoc NETworks (MANET) in Urban Area Environment

Ibrahim Khider Eltahir
2007 The 2nd International Conference on Wireless Broadband and Ultra Wideband Communications (AusWireless 2007)  
This paper gives insights on the effect of different propagation models for MANETs in indoor and outdoor environments and presents the parameters and the results of simulating using network simulator.  ...  They commonly offer only simple radio propagation models that neglect obstacles of a propagation environment.  ...  and Ultra Wideband Communications (AusWireless 2007) 0-7695-2842-2/07 $25.00 © 2007  ... 
doi:10.1109/auswireless.2007.80 fatcat:ynppjh57krbt3mrng4iaglyxqq

Frequency UWB Channel [chapter]

Gonzalo Llano, Juan C., Andres Navarro
2011 Ultra Wideband Communications: Novel Trends - Antennas and Propagation  
Temporal model of IEEE 802.15.3a UWB Channel The channel impulse response (CIR) time-variant for 802.15.3a UWB channel and denoted by h(t;t), is given by (Foerster et al., 2003) as  ...  T T T l         . (13) Due to the discrepancy in the fitting for the indoor residential, and indoor and outdoor office environments the IEEE TG4a proposes to model ray arrival times with mixtures  ...  Under the assumption that the channel power is Gamma distributed, an analytical approach to characterize the fade depth and the fade margin for indoor and outdoor environments is proposed.  ... 
doi:10.5772/16928 fatcat:mtlroavvgvb6nhtwvk7jpipdxq


Alpana P. Adsul, Shrikant K. Bodhe
2010 International Journal of Computer Networks & Communications  
The UWB (Ultra Wideband) technology has drawn phenomenal interest in industry as well as academia.  ...  This paper presents the development of analytical model for UWB system. A theoretical reference for UWB system performances is designed in non-ideal channels.  ...  (SS) multicarrier (MC) transmissions, which can also be characterized as an (ultra) wideband technique.  ... 
doi:10.5121/ijcnc.2010.2309 fatcat:ymjk74w4yndzjaicwb77yca4z4

Ultra Wide-Band Channel Characterization Using Generalized Gamma Distributions [chapter]

Zakaria Mohammadi, Rachid Saadane, Driss Aboutajdine
2012 Lecture Notes in Computer Science  
In this paper, we present an experimental characterization of the ultra-wide bandwidth (UWB) indoor channel using Generalized Gamma distributions.  ...  This characterization procedure was applied to the ultra wideband channel measurements collected from a measurement campaign, which has been performed within the project by the IMST group,  ...  Many characterizations have been performed for several environments: Indoor, Outdoor, Corridor, Office... [2] [3] [4] .  ... 
doi:10.1007/978-3-642-31254-0_20 fatcat:umydztbiinf6fkk2anaybtnmvu

Millimeter Wave Propagation Measurements and Characteristics for 5G System

Ahmed M. Al-Samman, Marwan Hadri Azmi, Y. A. Al-Gumaei, Tawfik Al-Hadhrami, Tharek Abd. Rahman, Yousef Fazea, Abdulmajid Al-Mqdashi
2020 Applied Sciences  
We used an ultra-wideband channel sounder (1 GHz bandwidth) in an indoor to outdoor (I2O) environment for non-line-of-sight (NLOS) scenarios.  ...  This paper presents ultra-wideband channel measurements for millimeter wave bands at 19, 28, and 38 GHz.  ...  [16] carried out 26 GHz open office LOS measurements of the wideband channel.  ... 
doi:10.3390/app10010335 fatcat:mbtsbwoo2ne5bj4cj3etr6lyhy
« Previous Showing results 1 — 15 out of 652 results