Results 81 to 90 of about 5,110,902 (386)
Model-Driven Deep Learning Based Channel Estimation and Feedback for Millimeter-Wave Massive Hybrid MIMO Systems [PDF]
IEEE Journal on Selected Areas in Communications, 2021 This paper proposes a model-driven deep learning (MDDL)-based channel estimation and feedback scheme for wideband millimeter-wave (mmWave) massive hybrid multiple-input multiple-output (MIMO) systems, where the angle-delay domain channels’ sparsity is ...
Xisuo Ma, Zhen Gao, F. Gao, M. Di Renzo
semanticscholar +1 more source
Asymptotic Theory of Quantum Channel Estimation [PDF]
PRX Quantum, 2021 The quantum Fisher information (QFI), as a function of quantum states, measures the amount of information that a quantum state carries about an unknown parameter. The (entanglement-assisted) QFI of a quantum channel is defined to be the maximum QFI of the output state assuming an entangled input state over a single probe and an ancilla.
Sisi Zhou, Sisi Zhou, Liang Jiang
openaire +6 more sources
Research on OFDM channel estimation of mine based on improved SRCNN
Meikuang AnquanAiming at the problem of low accuracy of traditional channel estimation algorithms in the harsh environment of underground coal mines, this paper proposes an improved Super Resolution Convdutional Network (SRCNN) for channel estimation.
Anyi WANG, Yan LIANG
doaj +1 more source
, 2007 —In this letter we characterize the substantial difference between two channel estimation approaches, namely the sample-spaced (SS) and the fractionally-spaced (FS) channel impulse response (CIR) estimators.
Akhtman, Jos, Hanzo, Lajos
core +1 more source
Channel Estimation of MIMO Relay Systems With Multiple Relay Nodes
IEEE 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
Deep Learning-Based Wireless Channel Estimation for MIMO Uncoded Space-Time Labeling Diversity
IEEE Access, 2020 Uncoded space-time labeling diversity (USTLD) is a space-time block coded (STBC) system with labeling diversity applied to it to increase wireless link reliability without compromising the spectral efficiency.
Bhekisizwe Mthethwa, Hongjun Xu
doaj +1 more source
Deep Learning for Channel Estimation: Interpretation, Performance, and Comparison
IEEE Transactions on Wireless Communications, 2021 Deep learning (DL) has emerged as an effective tool for channel estimation in wireless communication systems, especially under some imperfect environments.
Qiang Hu +4 more
semanticscholar +1 more source
Compressive sensing based channel estimation for NC-OFDM systems in cognitive radio context
Tongxin xuebao, 2011 A new channel estimation based on compressive sensing(CS)in non-contiguous orthogonal frequency division multiplexing(NC-OFDM)system was proposed.As for NC-OFDM systems in cognitive radio context,the infrastructure of CS-based channel estimation,the ...
Xue-yun HE, Rong-fang SONG, Ke-qin ZHOU
doaj +2 more sources
Social context prevents heat hormetic effects against mutagens during fish development
FEBS Letters, EarlyView.This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere +5 more
wiley +1 more source
Ion channel function of polycystin‐2/polycystin‐1 heteromer revealed by structure‐guided mutagenesis
FEBS Letters, EarlyView.Mutations in polycystin‐1 (PC1) or polycystin‐2 (PC2) cause autosomal‐dominant polycystic kidney disease (ADPKD). We generated a novel gain‐of‐function PC2/PC1 heteromeric ion channel by mutating pore‐blocking residues. Moreover, we demonstrated that PC2 will preferentially assemble with PC1 to form heteromeric complexes when PC1 is co‐expressed ...
Tobias Staudner +7 more
wiley +1 more source