Resource Type

Journal Article 190

Year

2023 13

2022 9

2021 13

2020 6

2019 4

2018 15

2017 15

2016 5

2015 6

2014 11

2013 11

2012 8

2011 4

2010 3

2009 10

2008 14

2007 13

2006 6

2005 3

2004 3

open ︾

Keywords

frequency 9

natural frequency 3

Algebraic Method (AGM) 2

Compressed sensing 2

Deep learning 2

dynamics 2

finite element method 2

frequency response 2

2-dimensions optical orthogonal square codes (2D-OOSC) 1

2n gamete 1

3S 1

ALK fusion 1

FAK6/7 1

H∞ control 1

AC excited 1

AF (atrial fibrillation) 1

Acoustic localization 1

Active surface wave 1

Agent simulation 1

open ︾

Search scope:

排序： Display mode:

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 overhead in massive multiple input multiple output (MIMO) systems due to the large number of antennas in the base station (BS). To reduce the overwhelming pilot overhead in such systems, a structured joint channel estimation scheme employing compressed sensing (CS) theory is proposed. Specifically, the channel sparsity in the angular domain due to the practical scattering environment is analyzed, where common sparsity and individual sparsity structures among geographically neighboring users exist in multi-user massive MIMO systems. Then, by equipping each user with multiple antennas, the pilot overhead can be alleviated in the framework of CS and the channel estimation quality can be improved. Moreover, a structured joint matching pursuit (SJMP) algorithm at the BS is proposed to jointly estimate the channel of users with reduced pilot overhead. Furthermore, the probability upper bound of common support recovery and the upper bound of channel estimation quality using the proposed SJMP algorithm are derived. Simulation results demonstrate that the proposed SJMP algorithm can achieve a higher system performance than those of existing algorithms in terms of pilot overhead and achievable rate.

Keywords： Compressed sensing     Multi-user massive multiple input multiple output (MIMO)     Frequency-division duplexing    

HTML PDF Collect

Resource allocation for physical-layer security in OFDMAdownlinkwith imperfect CSI None

Wei YANG, Jing MAO, Chen CHEN, Xiang CHENG, Liu-qing YANG, Hai-ge XIANG

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 3,   Pages 398-408 doi: 10.1631/FITEE.1700026

Abstract: We investigate the problem of resource allocation in a downlink orthogonal frequency-division multiple

Keywords： Resource allocation     Orthogonal frequency-division multiple access (OFDMA)     Imperfect channel state information    

HTML PDF Collect

A novel energy-efficient ICI cancellation technique for bandwidth improvements through cyclic prefix reuse in an OFDM system Article

Sandeep SAROWA, Harmanjeet SINGH, Sunil AGRAWAL, B. S. SOHI

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 11,   Pages 1892-1899 doi: 10.1631/FITEE.1601333

Abstract: Orthogonal frequency division multiplexing (OFDM), a very promising technique that is leading the evolutionbandwidth scarcity issue in spectrum allocation, is severely affected by the undesirable effects of the frequencyerror, which generates inter carrier interference (ICI) due to the Doppler shift and local oscillator frequency

Keywords： Orthogonal frequency division multiplexing (OFDM)     Fast Fourier transform (FFT)     Cyclic prefix (CP)    

HTML PDF Collect

UNREDUCED MEGAGAMETOPHYTE FORMATION VIA SECOND DIVISION RESTITUTION CONTRIBUTES TO TETRAPLOID PRODUCTION

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 2,

Abstract: heterozygosity rates in 16 SNP loci and all 2n megagametophytes were less than 50%, indicating that second division

Keywords： Citrus / 2n gamete / interploidy hybridization / pericentromeric SNP marker / second division restitution    

HTML PDF Collect

The V－BLAST Detection for MIMO MC－CDMA System

Yang Jie,Feng Guangzeng

Strategic Study of CAE 2007, Volume 9, Issue 1,   Pages 58-62

Abstract:

This paper investigates V-BLAST MC-CDMA down link.A V-BLAST detector per subcarrier is proposed for MIMO MC-CDMA system in this paper and the system performance with var ious numbers of V -BLAST antennas and users for such a system is evaluated throu gh simulations.

Keywords： multiple input multiple output(MIMO)     orthogonal frequency division multiplexing(OFDM)     layered space唱time    

HTML PDF Collect

Standard-independent I/Q imbalance estimation and compensation scheme inOFDM direct-conversion transceivers None

Fang-lin GU, Shan WANG, Wen-wu WANG

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 3,   Pages 388-397 doi: 10.1631/FITEE.1700003

Abstract: In this paper, we first investigate the effects of I/Q imbalance on orthogonal frequency division multiplexingdistortion, is used to estimate the I/Q imbalance parameters, and then the I/Q imbalance is corrected in the frequency

Keywords： In- and quadrature-phase (I/Q) imbalance     Orthogonal frequency division multiplexing (OFDM)     Standard-independent    

HTML PDF Collect

UNREDUCED MEGAGAMETOPHYTE FORMATION VIA SECOND DIVISION RESTITUTION CONTRIBUTES TO TETRAPLOID PRODUCTION

Qiangming XIA, Wei WANG, Kaidong XIE, Xiaomeng WU, Xiuxin DENG, Jude W. GROSSER, Wenwu GUO

Frontiers of Agricultural Science and Engineering   Pages 302-313 doi: 10.15302/J-FASE-2021385

Abstract: heterozygosity rates in 16 SNP loci and all 2n megagametophytes were less than 50%, indicating that second division

Keywords： Citrus     2n gamete     interploidy hybridization     pericentromeric SNP marker     second division restitution    

HTML PDF Collect

Control division of agricultural non-point source pollution at medium-sized watershed scale in Southeast

HUANG Jinliang, HONG Huasheng, ZHANG Luoping

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 3,   Pages 333-339 doi: 10.1007/s11783-008-0035-7

Abstract: Based on the quantitative results derived from GIS and environmental models, five control division unitscritical source areas of NSP, which enables adjusting measures to local conditions by further control division
HTML PDF Collect

SUSTAINABLE PLANT PEST MANAGEMENT THROUGH OPTIMIZATION AND MINIMIZATION

Plant Production and Protection Division (NSP), Food and Agriculture Organization of the United Nations

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 1,   Pages 161-166 doi: 10.15302/J-FASE-2021426

Abstract:

Plant pests and diseases have significant negative impacts on global food security, world trade and rural livelihoods. Climate change exacerbates these impacts in certain parts of the world. Overreliance on pesticides as the primary tool for plant pest management leads to problems such as pesticide resistance and pest resurgence. Environmental and food safety concerns are also associated with overuse of pesticides in crop production. There is clearly a need for a shift in pest management strategies and practices globally. Optimization of structures and functions in crop production agroecosystems through soil conservation practices and cropping diversification can improve pest regulation services provided in the systems. Prioritization of safer alternatives and practices in the IPM pyramid, such as resistant varieties and biopesticides, helps minimize the use of potentially risky agricultural inputs such as synthetic pesticides. Investment is needed to boost the development of innovative green technologies and practices. Production, distribution, use and regulatory capacities need to be strengthened to facilitate large-scale adoption of green technologies and practices. Finally, policy, financial and market instruments should be wielded to provide an enabling environment for the transformation to sustainable plant pest and disease management strategies and practices worldwide.

 

HTML PDF Collect

Dynamics of foot-and-mouth disease virus replication in cells at different phases of the cell-division

Claudia DOEL,Zhidong ZHANG,Lise MAZELET,Ryan WATERS,John BASHIRUDDIN

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 3,   Pages 250-257 doi: 10.15302/J-FASE-2014031

Abstract: describes studies in which FMDV infection was investigated in cells that were held at various cell division

Keywords： foot-and-mouth disease virus     cell cycle     replication    

HTML PDF Collect

Development of splenic surgery in China

JIANG Hongchi, ZHAO Xianqi, GAO Yue

Frontiers of Medicine 2007, Volume 1, Issue 2,   Pages 126-129 doi: 10.1007/s11684-007-0024-4

Abstract: applicable clinical frameworks have been established, thus making splenic surgery an indispensable division

Keywords： function     respective     prosperous discipline     knowledge     indispensable division    

HTML PDF Collect

A frequency error estimation for isogeometric analysis of Kirchhoff–Love cylindrical shells

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0006-x

Abstract: A frequency error estimation is presented for the isogeometric free vibration analysis of Kirchhoff–LoveBy analyzing the discrete isogeometric equations with the aid of harmonic wave assumption, the frequencyIn particular, the governing relationship of the continuum frequency for Kirchhoff–Love cylindrical shellsis naturally embedded into the frequency error measures without the need of explicit frequency expressionsNumerical results not only thoroughly verify the theoretical convergence rates of frequency solutions

Keywords： isogeometric analysis     Kirchhoff–Love cylindrical shell     free vibration     frequency error     convergence    

HTML PDF Collect

Application of 3S Technologies to Regional Ecological Function Division —A Case of City of Puyang in

Bian Yousheng,Cai Bofeng,Zhao Nan

Strategic Study of CAE 2005, Volume 7, Issue 12,   Pages 54-60

Abstract:

The ecological function division is the premise of reconciliation of economy, society and environmenttechnologies are the important guarantee of the accuracy and feasibility for the ecological function divisionexample, the characteristics and advantages of using 3S technologies for ecological function region divisionecological pattern which deeply influences the ecological function are sufficiently considered in the divisionmentioned above greatly improve the reasonability and practical significance of the ecological function division

Keywords： ecological function division     3S     spatial analysis     ecological pattern    

HTML PDF Collect

Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 506-510 doi: 10.1007/s11708-013-0275-5

Abstract: The collision frequency function for aerosol particles has already been calculated for the free moleculeforce, electric force and molecular forces, created by particles themselves, recalculated the collision frequencyAttractive forces increase naturally the collision frequency, while repulsive forces decrease it.

Keywords： aerosol particles     collision frequency function     coagulation    

HTML PDF Collect

Fuel variability effect on flickering frequency of diffusion flames

Jizhao LI, Yang ZHANG

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 134-140 doi: 10.1007/s11708-009-0034-9

Abstract: The intent of this study is to investigate the fuel variability on the flickering frequency of diffusionIt was found that the low frequency oscillation of flow and flame structures depended only weakly onWhen a mixture of methane/propane at a ratio of 1:1 was used the peak flickering frequency was aroundMechanisms thought to produce changes in the dynamic response and frequency harmonics were discussed.

Keywords： fuel variability     flickering frequency     diffusion flames     dynamics of combustion    

HTML PDF Collect

Title Author Date Type Operation

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

Resource allocation for physical-layer security in OFDMAdownlinkwith imperfect CSI

Wei YANG, Jing MAO, Chen CHEN, Xiang CHENG, Liu-qing YANG, Hai-ge XIANG

Journal Article

A novel energy-efficient ICI cancellation technique for bandwidth improvements through cyclic prefix reuse in an OFDM system

Sandeep SAROWA, Harmanjeet SINGH, Sunil AGRAWAL, B. S. SOHI

Journal Article

UNREDUCED MEGAGAMETOPHYTE FORMATION VIA SECOND DIVISION RESTITUTION CONTRIBUTES TO TETRAPLOID PRODUCTION

Journal Article

The V－BLAST Detection for MIMO MC－CDMA System

Yang Jie,Feng Guangzeng

Journal Article

Standard-independent I/Q imbalance estimation and compensation scheme inOFDM direct-conversion transceivers

Fang-lin GU, Shan WANG, Wen-wu WANG

Journal Article

UNREDUCED MEGAGAMETOPHYTE FORMATION VIA SECOND DIVISION RESTITUTION CONTRIBUTES TO TETRAPLOID PRODUCTION

Qiangming XIA, Wei WANG, Kaidong XIE, Xiaomeng WU, Xiuxin DENG, Jude W. GROSSER, Wenwu GUO

Journal Article

Control division of agricultural non-point source pollution at medium-sized watershed scale in Southeast

HUANG Jinliang, HONG Huasheng, ZHANG Luoping

Journal Article

SUSTAINABLE PLANT PEST MANAGEMENT THROUGH OPTIMIZATION AND MINIMIZATION

Plant Production and Protection Division (NSP), Food and Agriculture Organization of the United Nations

Journal Article

Dynamics of foot-and-mouth disease virus replication in cells at different phases of the cell-division

Claudia DOEL,Zhidong ZHANG,Lise MAZELET,Ryan WATERS,John BASHIRUDDIN

Journal Article

Development of splenic surgery in China

JIANG Hongchi, ZHAO Xianqi, GAO Yue

Journal Article

A frequency error estimation for isogeometric analysis of Kirchhoff–Love cylindrical shells

Journal Article

Application of 3S Technologies to Regional Ecological Function Division —A Case of City of Puyang in

Bian Yousheng,Cai Bofeng,Zhao Nan

Journal Article

Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Journal Article

Fuel variability effect on flickering frequency of diffusion flames

Jizhao LI, Yang ZHANG

Journal Article