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Joint DOA and channel estimation with data detection based on 2D unitary ESPRITin massive MIMO systems Article

Jing-ming KUANG, Yuan ZHOU, Ze-song FEI

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 6,   Pages 841-849 doi: 10.1631/FITEE.1700025

Abstract: We propose a novel method for joint two-dimensional (2D) direction-of-arrival (DOA) and channel estimationThe conventional DOA estimation algorithms usually assume that the channel impulse responses are knownIn contrast, a joint DOA and channel estimation scheme is proposed, which first estimates the channelAfter that, the DOAs of the waves are estimated based on a unitary ESPRIT algorithm using previous channelimpulse response estimates instead of accurate channel impulse responses and then, the enhanced channel

Keywords： Two-dimensional (2D) direction-of-arrival (DOA) estimation     Channel impulse response estimation     Data    

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Improving the Performance of OFDM Channel Estimation through Subspace Projecting and Tracking

Dong Liang,Cao Xiuying,Bi Guangguo

Strategic Study of CAE 2006, Volume 8, Issue 11,   Pages 86-93

Abstract:

The LS channel estimation of OFDM systems can be viewed as a noisy observation of the true channelIn this paper, the substance of the improvement of LS channel estimation is analyzed when subspace projectingestimation is given, based on which this method is exterded to non-LS channel estimation.When signal subspace varies with time, subspace tracking should be performed to maintain a good estimationsimulation shows that this channel estimator outperforms its nonparametric counterparts.

Keywords： OFDM     subspace     projecting     tracking     channel estimation    

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Compressed sensing-based structured joint channel estimation in a multi-user massive MIMO system Article

Ruo-yu ZHANG, Hong-lin ZHAO, Shao-bo JIA

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 12,   Pages 2082-2100 doi: 10.1631/FITEE.1601635

Abstract: Acquisition of accurate channel state information (CSI) at transmitters results in a huge pilot overheadTo reduce the overwhelming pilot overhead in such systems, a structured joint channel estimation schemeSpecifically, the channel sparsity in the angular domain due to the practical scattering environmentestimation quality can be improved.Furthermore, the probability upper bound of common support recovery and the upper bound of channel estimation

Keywords： Multi-user massive multiple input multiple output (MIMO)     Frequency-division duplexing     Structured joint channelestimation     Pilot overhead reduction    

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On detecting primary user emulation attack using channel impulse response in the cognitive radio network Article

Qiao-mu JIANG, Hui-fang CHEN, Lei XIE, Kuang WANG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 10,   Pages 1665-1676 doi: 10.1631/FITEE.1700203

Abstract: In this paper, we propose a PUEA detection method that exploits the radio channel information to detectIn the proposed method, the uniqueness of the channel impulse response (CIR) between the secondary userIn addition, a modified subspace-based blind channel estimation method is presented to estimate the CIRNumerical results show that the proposed PUEA detection method performs well although the difference in channel

Keywords： Cognitive radio network     Primary user emulation attack     Subspace-based blind channel estimation     Channel    

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A cellphone-based colorimetric multi-channel sensor for water environmental monitoring

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1590-z

Abstract:

● A cellphone-based colorimetric multi-channel sensor for in-field

Keywords： Colorimetric analysis     Multi-channel sensor     Cellphone     Water quality indexes     Environmental monitoring    

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Analysis of nonlinear channel friction inverse problem

CHENG Weiping, LIU Guohua

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 205-210 doi: 10.1007/s11709-007-0024-0

Abstract: decomposition (SVD) for general inverse matrices and the optimization algorithm are used to solve the channel

Keywords： singular     SVD     second-order     covariance     Theoretical    

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Improvement of solidification model and analysis of 3D channel blockage with MPS method

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 946-958 doi: 10.1007/s11708-021-0754-z

Abstract: In a severe accident of a nuclear power reactor, coolant channel blockage by solidified molten core debrisIn the study described in this paper, a novel solidification model for analyzing melt flowing channelFurthermore, 3-D channel blockage analyses of a boiling water reactor (BWR) fuel support piece have beenThe results show that a partial channel blockage develops from the vicinity of the speed limiter, whichdoes not fully develop into a complete channel blockage, but still diverts the incoming melt flow that

Keywords： boiling water reactor (BWR)     severe accident     channel blockage     moving particle semi-implicit (MPS) method    

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Experimental investigation of liquid metal alloy based mini-channel heat exchanger for high power electronic

Manli LUO, Jing LIU

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 479-486 doi: 10.1007/s11708-013-0277-3

Abstract: this paper is dedicated to clarify the heat transfer behaviors of the liquid metal flowing in mini-channelwere all cooled down by these three heat dissipation apparatuses and the exchanger with the smallest channelconstant heat flux in the hydrodynamically developed and thermally developing region in the rectangular channelThis study is expected to provide valuable reference for designing future liquid metal based mini-channel

Keywords： heat exchanger     liquid metal     mini-channel     heat dissipation     heat transfer coefficient    

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Effect of Joule heating on electro-osmotic flow in a closed-end micro-channel with isothermal and convective

Liang ZHAO, Linhua LIU,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 381-388 doi: 10.1007/s11708-009-0057-2

Abstract: The effect of Joule heating on the steady state electro-osmotic flow in a closed-end micro-channel ispresence of Joule heating causes an increase in temperature and a decrease in viscosity in the whole micro-channelvelocity at the central region in order to maintain a zero flow rate at the cross section of the micro-channelpressure gradient is also studied, which is very important for the application of the closed-end micro-channelsignificantly smaller than that without considering Joule heating when the wall temperature of the micro-channel

Keywords： closed-end micro-channel     electrical double layer     electro-osmotic flow     induced pressure gradient     Joule    

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Understanding channel tropism in traditional Chinese medicine in the context of systems biology

Ping Liu, Songlin Liu, Gang Chen, Ping Wang

Frontiers of Medicine 2013, Volume 7, Issue 3,   Pages 277-279 doi: 10.1007/s11684-013-0273-3

Abstract:

Channel tropism is investigated and developed through long-term clinical practice.In recent years, the development of channel tropism theory has attracted increasing attention.This study analyzed channel tropism theory and the problems associated with it.Systems biology could provide novel insights and platform in the study of channel tropism.Some problems in channel tropism theory, including pharmacology and action mechanism, were investigated

Keywords： systems biology     channel tropism theory     traditional Chinese medicine     application    

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Intelligent algorithm for optimal meter placement and bus voltage estimation in ring main distribution

L. RAMESH, N. CHAKRABORTY, S. P. CHOWDHURY

Frontiers in Energy 2012, Volume 6, Issue 1,   Pages 47-56 doi: 10.1007/s11708-011-0159-5

Abstract: results proves that the swarm tuned artificial neural network (ANN) estimator is best suited for accurate estimation

Keywords： artificial intelligence     power distribution control     state estimation    

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The Innovation of the Yangtze Estuary Deepwater Channel Improvement Project

Fan Qijin

Strategic Study of CAE 2004, Volume 6, Issue 12,   Pages 13-26

Abstract: technical innovation and strict, scientific management, the unprecedented Yangtze Estuary deepwater channel

Keywords： Yangtze Estuary deepwater channel     engineering management     designing     construction    

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An operating state estimation model for integrated energy systems based on distributed solution

Dengji ZHOU, Shixi MA, Dawen HUANG, Huisheng ZHANG, Shilie WENG

Frontiers in Energy 2020, Volume 14, Issue 4,   Pages 801-816 doi: 10.1007/s11708-020-0687-y

Abstract: the mathematical model of the electricity-gas interconnected integrated energy system and its state estimationFinally, a distributed state estimation framework is formed by combining the synchronous alternatingdirection multiplier method to achieve an efficient estimation of the state of the integrated energymethod are only 0.0132% and 0.0864%, much lower than the estimation error by using the Lagrangian relaxationBesides, compared with the centralized estimation method, the proposed distributed method saves 5.42

Keywords： integrated energy system     state estimation     electricity-gas coupling energy system     nonlinear coupling     distributed    

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Bayes estimation of residual life by fusing multisource information

Qian ZHAO, Xiang JIA, Zhi-jun CHENG, Bo GUO

Frontiers of Engineering Management 2018, Volume 5, Issue 4,   Pages 524-532 doi: 10.15302/J-FEM-2018034

Abstract:

Residual life estimation is essential for reliability engineering.effectiveness and practicability of the proposed method are validated by comparing it with residual life estimation

Keywords： residual life estimation     Bayes model     linear Wiener process    

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Thermal degradation kinetics and lifetime estimation for polycarbonate/polymethylphenylsilsesquioxane

Jiangbo WANG, Zhong XIN

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 167-171 doi: 10.1007/s11705-009-0006-y

Abstract: The thermal degradation behaviors of polycarbonate/polymethylphenylsilsesquioxane (FRPC) composites were investigated by thermogravimetric analysis (TGA) under isothermal conditions in nitrogen atmosphere. The isothermal kinetics equation was used to describe the thermal degradation process. The results showed that activation energy ( ), in the case of isothermal degradation, was a quick increasing function of conversion (α) for polycarbonate (PC) but was a strong and decreasing function of conversion for FRPC. Under the isothermal condition, the addition of polymethylphenylsilsesquioxane (PMPSQ) retardanted the thermal degradation and enhanced the thermal stability of PC during the early and middle stages of thermal degradation. It also indicated a possible existence of a difference in nucleation, nuclei growth, and gas diffusion mechanism in the thermal degradation process between PC and FRPC. Meanwhile, the addition of PMPSQ influenced the lifetime of PC, but the composite still met the demand in manufacturing and application.

Keywords： polycarbonate     polymethylphenylsilsesquioxane     thermal degradation kinetics     activation energy     lifetime    

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Title Author Date Type Operation

Joint DOA and channel estimation with data detection based on 2D unitary ESPRITin massive MIMO systems

Jing-ming KUANG, Yuan ZHOU, Ze-song FEI

Journal Article

Improving the Performance of OFDM Channel Estimation through Subspace Projecting and Tracking

Dong Liang,Cao Xiuying,Bi Guangguo

Journal Article

Compressed sensing-based structured joint channel estimation in a multi-user massive MIMO system

Ruo-yu ZHANG, Hong-lin ZHAO, Shao-bo JIA

Journal Article

On detecting primary user emulation attack using channel impulse response in the cognitive radio network

Qiao-mu JIANG, Hui-fang CHEN, Lei XIE, Kuang WANG

Journal Article

A cellphone-based colorimetric multi-channel sensor for water environmental monitoring

Journal Article

Analysis of nonlinear channel friction inverse problem

CHENG Weiping, LIU Guohua

Journal Article

Improvement of solidification model and analysis of 3D channel blockage with MPS method

Journal Article

Experimental investigation of liquid metal alloy based mini-channel heat exchanger for high power electronic

Manli LUO, Jing LIU

Journal Article

Effect of Joule heating on electro-osmotic flow in a closed-end micro-channel with isothermal and convective

Liang ZHAO, Linhua LIU,

Journal Article

Understanding channel tropism in traditional Chinese medicine in the context of systems biology

Ping Liu, Songlin Liu, Gang Chen, Ping Wang

Journal Article

Intelligent algorithm for optimal meter placement and bus voltage estimation in ring main distribution

L. RAMESH, N. CHAKRABORTY, S. P. CHOWDHURY

Journal Article

The Innovation of the Yangtze Estuary Deepwater Channel Improvement Project

Fan Qijin

Journal Article

An operating state estimation model for integrated energy systems based on distributed solution

Dengji ZHOU, Shixi MA, Dawen HUANG, Huisheng ZHANG, Shilie WENG

Journal Article

Bayes estimation of residual life by fusing multisource information

Qian ZHAO, Xiang JIA, Zhi-jun CHENG, Bo GUO

Journal Article

Thermal degradation kinetics and lifetime estimation for polycarbonate/polymethylphenylsilsesquioxane

Jiangbo WANG, Zhong XIN

Journal Article