Results 31 to 40 of about 136,581 (191)

Assessing the contribution of multiply scattered radio waves to the impulse response of a wireless channel

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки
Using a three-dimensional topographic map of a typical microdistrict in Kazan, multipath radio wave propagation in mobile radio communication systems was modeled by the method of ray tracing.
R. F. Khaliullin, A. I. Sulimov
doaj   +1 more source

Target tracking with line-of-sight identification in sensor networks under unknown measurement noises [PDF]

open access: yes, 2009
—Tracking a target is a fundamental and crucial problem in wireless sensor networks. It is well known that non-line-of-sight (NLOS) propagation will significantly degrade the tracking accuracy if its effects are ignored.
H. C. So, H. Q. Liu
core   +1 more source

Site Prediction Model for the over Rooftop Path in a Suburban Environment at Millimeter Wave

open access: yesInternational Journal of Antennas and Propagation, 2019
This paper proposes the site-specific pathloss model for a small town in a suburban environment at millimeter wave. Also, the site general characteristics are provided in the entire measurement area of the small town. The proposed pathloss model is based
Young Keun Yoon   +2 more
doaj   +1 more source

A Pseudo-Satellite Fingerprint Localization Method Based on Discriminative Deep Belief Networks

open access: yesRemote Sensing
Pseudo-satellite technology has excellent compatibility with the BDS satellite navigation system in terms of signal systems. It can serve as a stable and reliable positioning signal source in signal-blocking environments.
Xiaohu Liang   +4 more
doaj   +1 more source

3D RT adaptive path sensing Method: RSSI modelling validation at 4.5 GHz, 28 GHz, and 38 GHz

open access: yesAlexandria Engineering Journal, 2022
This paper explains a new Adaptive Path Sensing Method (APSM) for indoor radio wave propagation prediction. Measurement campaigns, which cover indoor line-of-sight (LoS), non-line-of-sight (NLoS) and different room scenarios, are conducted at the new ...
Tan Kim Geok   +9 more
doaj   +1 more source

Coverage and Rate Analysis for Unmanned Aerial Vehicle Base Stations with LoS/NLoS Propagation

open access: yes, 2018
The use of unmanned aerial vehicle base stations (UAV-BSs) as airborne base stations has recently gained great attention. In this paper, we model a network of UAV-BSs as a Poisson point process (PPP) operating at a certain altitude above the ground users.
Alzenad, Mohamed, Yanikomeroglu, Halim
core   +1 more source

Path Loss Prediction Model for Mobile Radio Wave Propagation into a Multi-Floored Building [PDF]

open access: yes, 2007
This thesis presents the development of a new path loss prediction model for mobile communication field due to wave propagation into multifloored building.
Ramly, Zainal Hafiz
core  

Constraining Theories of SiO Maser Polarization: Analysis of a $pi$/2 EVPA Change [PDF]

open access: yes, 2018
The full theory of polarized SiO maser emission from the near-circumstellar environment of Asymptotic Giant Branch stars has been the subject of debate, with theories ranging from classical Zeeman origins to predominantly non-Zeeman anisotropic ...
Gray, Malcolm   +2 more
core   +2 more sources

A Practical Radiosity Method for Predicting Transmission Loss in Urban Environments

open access: yesEURASIP Journal on Wireless Communications and Networking, 2004
The ability to predict transmission loss or field strength distribution is crucial for determining coverage in planning personal communication systems.
Liang Ming, Liu Qin
doaj   +2 more sources

A Measurement Based Shadow Fading Model for Vehicle-to-Vehicle Network Simulations

open access: yes, 2015
The vehicle-to-vehicle (V2V) propagation channel has significant implications on the design and performance of novel communication protocols for vehicular ad hoc networks (VANETs).
Abbas, Taimoor   +3 more
core   +2 more sources

Home - About - Disclaimer - Privacy