Results 61 to 70 of about 43,924 (217)
Methods for Anomalous Azimuth Estimate Censoring in Small Element Antenna Arrays
Известия высших учебных заведений России: Радиоэлектроника, 2017 There are abnormal azimuth estimates caused by multipath propagation and adjacent signal spectra overlapping in azimuth estimates of radio source created by radio monitoring complexes in broad band.
M. E. Shevchenko +5 more
doaj
Experimental Multipath-Cluster Characteristics of 28-GHz Propagation Channel
IEEE Access, 2015 In this paper, a channel measurement campaign is introduced, which utilizes direction-scan-sounding to capture the spatial characteristics of 28-GHz wave propagation channels with 500-MHz sounding bandwidth in office environments.
Xuefeng Yin, Cen Ling, Myung-Don Kim
doaj +1 more source
Strange Attractors in Multipath propagation: Detection and characterisation
, 2001 Multipath propagation of radio waves in indoor/outdoor environments shows a highly irregular behavior as a function of time. Typical modeling of this phenomenon assumes the received signal is a stochastic process composed of the superposition of various altered replicas of the transmitted one, their amplitudes and phases being drawn from specific ...
C. Tannous, R. Davies, A. Angus
openaire +2 more sources
Safety Science and Technology, EarlyView.A multinode wearable system tailored for firefighters is presented, featuring LoRa‐BLE heterogeneous communication and edge‐side deep learning. It integrates a lightweight 1D‐CNN for real‐time posture recognition and an adaptive Physiological Strain Index (aPSI) model, ensuring reliable status monitoring and safety warning in complex fireground ...
Chongyuan Ni +8 more
wiley +1 more source
IEEE Open Journal of Vehicular TechnologyThis study presents wideband propagation measurements of 105 GHz multipath characteristics, encompassing a full 360$^\circ $ in a real office desktop environment.
Masaki Maeda +3 more
doaj +1 more source
Intra- and inter-cell interference investigations for broadband radio access systems above 10 GHz
Journal of Telecommunications and Information Technology, 2001 Local multipoint distribution systems (LMDS) operating above 10 GHz have a large bandwidth (2--3 GHz) but a very limited range. These systems can provide coverage to a few kilometers only.
Ranjan Bose, Andreas Hayn, Rolf Jakoby
doaj +1 more source
Sensors, 2020 In this paper, we propose a multipath-assisted device-free localization (DFL) system that includes magnitude and phase information (MAMPI). The DFL system employs ultra-wideband (UWB) channel impulse response (CIR) measurements, enabling the extraction ...
Marco Cimdins +2 more
doaj +1 more source
A Novel Target-Height Estimation Approach Using Radar-Wave Multipath Propagation for Automotive Applications [PDF]
Advances in Radio Science, 2017 This paper introduces a novel target height estimation approach using a Frequency Modulation Continuous Wave (FMCW) automotive radar. The presented algorithm takes advantage of radar wave multipath propagation to measure the height of objects in the ...
A. Laribi +3 more
doaj +1 more source
Analytical BER Performance of DS-CDMA Ad Hoc Networks using Large Area Synchronized Spreading Codes
, 2005 The family of operational CDMA systems is interference-limited owing to the Inter Symbol Interference (ISI) and the Multiple Access Interference (MAI) encountered.
Hanzo, L., Hua, W., Liu, X.
core +1 more source
Improved DOA estimation using polarisation diversity : simulations using a wideband propagation model [PDF]
, 2000 This paper investigates the performance of a number of direction-of-arrival (DOA) estimation algorithms in a wideband macrocellular channel using a dual-polarised antenna array.
AlMidfa, K, Nix, AR, Temeh, EK
core +2 more sources