Results 71 to 80 of about 4,630 (180)

Multipath Propagation in Rich Scattering

open access: yes
Abstract Rich scattering environments, characterized by numerous reflective and diffractive structures, play a crucial role in the propagation of THz signals. In industrial settings such as server rooms and production lines, metallic surfaces and small machine components contribute to complex multipath channels, introducing both ...
Carla Reinhardt   +4 more
openaire   +1 more source

Analytical investigation of LOS multipath propagation

open access: yesElectronics Letters, 1987
An improved and comprehensive version of the multipath model suggested by Ruthroff is presented. The model can be used to determine the different ray path parameters and to investigate both the frequency and space selectivity aspects of this phenomenon.
H.M. Rashwan   +2 more
openaire   +1 more source

On OFDM Ranging Performance Degradation in Multipath Scenarios: Bias and Misspecified Cramér–Rao Bounds

open access: yesIEEE Access
Multipath propagation represents a dominant error source limiting the accuracy of radio-based ranging and positioning in urban environments. Conventional ranging estimators typically estimate only the range of the first arriving path while neglecting the
Lucas Alvarez Navarro   +2 more
doaj   +1 more source

Research of application of cooperative communication to underground coal mine

open access: yesGong-kuang zidonghua, 2015
In view of complex electromagnetic wave propagation environment and outstanding multipath effects in coal mine, major anti-multipath methods of mine wireless communication were analyzed.
WANG Tingting, XU Zhao, ZHANG Xiaoguang
doaj   +1 more source

Multipath Ghosts in Through‐the‐Wall Radar Imaging: Challenges and Solutions

open access: yesETRI Journal, 2018
In through‐the‐wall radar imaging (TWRI), the presence of front and side walls causes multipath propagation, which creates fake targets called multipath ghosts.
Abdi T. Abdalla   +2 more
doaj   +1 more source

Multipath propagation in line-of-sight links

open access: yesElectronics Letters, 1979
Using a classical model, and adding two complementary propositions, it is possible to obtain a general method for calculating the fading distribution laws on line-of-sight links of indifferent lengths undergoing multipath propagation. In particular, it is shown that the conventional empirical d3.5 power law gives a rough approximation in a very limited
openaire   +1 more source

Tropospheric Propagation Effects Extracted From ADS‐B Messages

open access: yesEngineering Reports
Tropospheric propagation has long been recognized as a challenge in satellite communication and GNSS applications, particularly at low elevation angles where multipath, diffraction, and scintillation effects are more pronounced.
Alina‐Mihaela Badescu
doaj   +1 more source

DEVICE FOR MEASURING TEMPORAL CHARACTERISTICS OF MILLIMETER-LENGTH RADIOWAVES SCATTERED UNDER MULTIPATH PROPAGATION

open access: yesПриборы и методы измерений, 2015
Possibility of temporal characteristics of scattered radiosignals under multipath propagation was analyzed. A scheme of millimeter-length radiowaves transceiver was presented.
V. V. Murav’iov   +3 more
doaj  

THE SIGNALS IMMUNITY OF THE IMPROVED MODULATION BY CYCLIC SHIFT WITH ADAPTATION TO INFORMATION TRANSFER RATE IN MULTIMODE PROPAGATION ENVIRONMENT

open access: yesSučasnì Informacìjnì Tehnologìï u Sferì Bezpeki ta Oboroni, 2015
The results of comparative analysis of broadband modulation perspective methods are in presented. Basic principles of perspective radiointerfaces construction are considered.
Artem O. Moskalenko   +3 more
doaj  

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