Results 51 to 60 of about 856,367 (318)

Impulse Noise Mitigation and Channel Estimation Method in OFDM Systems Based on TMSBL

open access: yesIEEE Access
To address the problem of reduced channel estimation performance in underwater acoustic Orthogonal Frequency Division Multiplexing (OFDM) systems due to impulse noise, a method for impulse noise suppression and underwater acoustic channel estimation ...
Chuanxi Xing   +4 more
doaj   +1 more source

Channel Estimation of MIMO Relay Systems With Multiple Relay Nodes

open access: yesIEEE Access, 2017
In this paper, we consider the channel estimation problem for multiple-input multiple-output wireless relay communication systems with multiple relay nodes.
Zhiqiang He   +4 more
doaj   +1 more source

Thermostable neutral metalloprotease from Geobacillus sp. EA1 does not share thermolysin's preference for substrates with leucine at the P1′ position

open access: yesFEBS Letters, EarlyView.
Knowing how proteases recognise preferred substrates facilitates matching proteases to applications. The S1′ pocket of protease EA1 directs cleavage to the N‐terminal side of hydrophobic residues, particularly leucine. The S1′ pocket of thermolysin differs from EA's at only one position (leucine in place of phenylalanine), which decreases cleavage ...
Grant R. Broomfield   +3 more
wiley   +1 more source

Channel Modelling and Estimation for Shallow Underwater Acoustic OFDM Communication via Simulation Platform

open access: yesApplied Sciences, 2019
The performance of underwater acoustic (UWA) communication is heavily dependent on channel estimation, which is predominantly researched by simulating UWA channels modelled in complex and dynamic underwater environments.
Xiaoyu Wang   +5 more
doaj   +1 more source

Channel Flow and Flood Estimate [PDF]

open access: yesAnnals of West University of Timisoara - Physics, 2016
Abstract The movement of water on the land surface, within channels and through the soil is dependent on some hydrological factors. For surface flow, the velocity of flow increases with the bottom gradient of the channel and the flow depth, but when roughness increases, it decreases.
J. A. Adegoke, Mutiu A. Fakunle
openaire   +3 more sources

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

open access: yesFEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Channel Estimation for Spatial Modulation [PDF]

open access: yesIEEE Transactions on Communications, 2014
In this paper, a novel channel estimation (CE) method is proposed for spatial modulation (SM), a unique single-stream multiple-input-multiple-output transmission technique. In SM, there is only one transmit antenna being active at any time instance. While this property completely avoids inter-channel interference, it results in a challenge to estimate ...
Wu, Xiping   +3 more
openaire   +3 more sources

Optimal Pilot Symbols Ratio in terms of Spectrum and Energy Efficiency in Uplink CoMP Networks

open access: yes, 2018
In wireless networks, Spectrum Efficiency (SE) and Energy Efficiency (EE) can be affected by the channel estimation that needs to be well designed in practice.
Cui, Qimei, Wang, Ning, Zhang, Yuhao
core   +1 more source

Structural dynamics of the plant hormone receptor ETR1 in a native‐like membrane environment

open access: yesFEBS Letters, EarlyView.
The present study unveils the structural and signaling dynamics of ETR1, a key plant ethylene receptor. Using an optimized nanodisc system and solution NMR, we captured full‐length ETR1 in a native‐like membrane environment. Our findings reveal dynamic domain uncoupling and Cu(I)‐induced rigidification, providing the first evidence of metal‐triggered ...
Moritz Lemke   +2 more
wiley   +1 more source

A Pilot-Based Integration Method of Ranging and LS Channel Estimation for OFDM Systems

open access: yesDrones, 2022
In the design of unmanned aerial vehicle (UAV) communication systems, orthogonal frequency division multiplexing (OFDM) is a commonly used communication technology.
Bangtao Hu, Xue Li, Linshan Xue
doaj   +1 more source

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