Results 21 to 30 of about 2,875,016 (292)
Two-stage Channel Frequency Response Estimation in OFDM Systems [PDF]
, 2020 This paper proposes two-stage channel frequency response estimation algorithm in communication systems with OFDM technology. Algorithm is based on Kalman filter. Pilots from current and previous OFDM symbols are used for channel estimation.
Myronchuk, Oleksandr +2 more
core +2 more sources
Node Density Estimation in VANETs Using Received Signal Power [PDF]
Radioengineering, 2015 Accurately estimating node density in Vehicular Ad hoc Networks, VANETs, is a challenging and crucial task. Various approaches exist, yet none takes advantage of physical layer parameters in a distributed fashion.
G. Khomami +2 more
doaj
Channel Acquisition for Massive MIMO-OFDM with Adjustable Phase Shift Pilots [PDF]
, 2015 We propose adjustable phase shift pilots (APSPs) for channel acquisition in wideband massive multiple-input multiple-output (MIMO) systems employing orthogonal frequency division multiplexing (OFDM) to reduce the pilot overhead.
Gao, Xiqi +3 more
core +2 more sources
A Long Distance Underwater Visible Light Communication System With Single Photon Avalanche Diode
IEEE Photonics Journal, 2016 Underwater visible light communication (UVLC) is of great interest to the military, industry, and the scientific community. In this paper, a long-distance UVLC system is designed, where the half power angle of light-emitting diode (LED) is narrowed to ...
Chao Wang, Hong-Yi Yu, Yi-Jun Zhu
doaj +1 more source
Cascaded PLC-VLC Channel: An Indoor Measurements Campaign
IEEE Access, 2018 Recently, power-line communication (PLC) technology has been associated with the emerging visible light communication (VLC) technology. PLC technology is matured and has gained from tremendous research contributions over the past years.
Stephane M. Nlom +2 more
doaj +1 more source
A Simulation Framework for Multiple-Antenna Terminals in 5G Massive MIMO Systems
IEEE Access, 2017 The recent interest in massive multiple in multiple out (MIMO) has spurred intensive work on massive MIMO channel modeling in the contemporary literature. However, current models fail to take the characteristics of terminal antennas into account.
Erik L. Bengtsson +5 more
doaj +1 more source
Unsteady Linearisation of Bed Shear Stress for Idealised Storm Surge Modelling
Journal of Marine Science and Engineering, 2021 The modelling of time-varying shallow flows, such as tides and storm surges, is complicated by the nonlinear dependency of bed shear stress on flow speed. For tidal flows, Lorentz’s linearisation circumvents nonlinearity by specifying a (steady) friction
Pieter C. Roos +5 more
doaj +1 more source
Validity of single-channel model for a spin-orbit coupled atomic Fermi gas near Feshbach resonances
, 2012 We theoretically investigate a Rashba spin-orbit coupled Fermi gas near Feshbach resonances, by using mean-field theory and a two-channel model that takes into account explicitly Feshbach molecules in the close channel.
Cui, Jing-Xin +3 more
core +2 more sources
Modeling GIRK channel conductance [PDF]
Journal of General Physiology, 2019 JGP study uses MD simulations to investigate the gating and conductance of the inwardly rectifying potassium channel GIRK2.
openaire +2 more sources
IEEE Access, 2023 Train Control system as the nerve of railway has attracted significant attention from both academia and industries since it is closely related to safety, especially in High-speed railway(HSR). To be in line with the research of 5G network for railway (5G-
Yiqun Liang +5 more
doaj +1 more source