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Multi-user rate and power analysis in a cognitive radio network with massive multi-input multi-output None

Shang LIU, Ishtiaq AHMAD, Ping ZHANG, Zhi ZHANG

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 5,   Pages 674-684 doi: 10.1631/FITEE.1700081

Abstract: power allocation strategies in an underlay cognitive radio (CR) network that contains relay and massive multi-inputmulti-output (MIMO).show that the massive MIMO with linear pre-coding can mitigate asymptotically the interference in a multi-user

Keywords： Massive multi-input multi-output     Cognitive radio     Relay network     Transmission rate     Power analysis    

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Cutting CO emissions through demand side regulation: Implications from multi-regional input–output linear

Frontiers of Engineering Management   Pages 452-461 doi: 10.1007/s42524-022-0209-1

Abstract: This study combines multi-regional input–output (MRIO) model with linear programming (LP) model to explore

Keywords： CO2 emissions     demand side regulation     multi-regional input–output model     linear programming    

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A 39 GHz Dual-Channel Transceiver Chipset With an Advanced LTCC Package for 5G Multi-Beam MIMO Systems Aticle

Yiming Yu,Zhilin Chen,Chenxi Zhao,Huihua Liu,Yunqiu Wu,Wen-Yan Yin,Kai Kang

Engineering 2023, Volume 22, Issue 3,   Pages 125-140 doi: 10.1016/j.eng.2022.04.023

Abstract:

This article presents a 39 GHz transceiver front-end chipset for 5G multi-input multi-output (MIMOThe measurement characteristics show that the TX SIP provides 11 dB maximum gain and 10 dBm saturated outputpower, while the RX SIP achieves 52 dB maximum gain, 5.4 dB noise figure, and 7.2 dBm output 1 dB compressionBased on the chipset, a 39 GHz multi-beam prototype is also developed to perform the MIMO operation forThe over-the-air communication link for one- and two-stream transmission indicates that the multi-beam

Keywords： 5G     Multi-beam     Multi-input multi-output     Millimeter-wave     Transceiver     Wireless communication    

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On optimization of cooperative MIMO for underlaid secrecy Industrial Internet of Things Research Article

Xinyao WANG, Xuyan BAO, Yuzhen HUANG, Zhong ZHENG, Zesong FEI

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 2,   Pages 259-274 doi: 10.1631/FITEE.2200188

Abstract: In this paper, techniques are investigated for , which operates as an underlaid cognitive radio system that coexists with a primary user (PU). The underlaid secrecy paradigm is enabled by improving the secrecy rate towards the C-MIMO receiver and reducing the interference towards the PU. Such a communication model is especially suitable for implementing Industrial Internet of Things (IIoT) systems in the unlicensed spectrum, which can trade off spectral efficiency and information secrecy. To this end, we propose an (EAP) method and formulate the secrecy rate optimization problem, which is subject to both the single device power constraint and the interference power constraint. This precoder design is enabled by decomposing the original optimization problem into eigenspace selection and power allocation sub-problems. Herein, the eigenvectors are adaptively selected by the transmitter according to the channel conditions of the underlaid users and the PUs. In addition, a simplified EAP method is proposed for large-dimensional C-MIMO transmission, exploiting the additional spatial degree of freedom for a low-complexity secrecy precoder design. Numerical results show that by transmitting signal and artificial noise in the properly selected eigenspace, C-MIMO can eliminate the secrecy outage and outperforms the fixed eigenspace precoding methods. Moreover, the proposed simplified EAP method for the large-dimensional C-MIMO can significantly improve the secrecy rate.

Keywords： Cognitive radio network     Physical layer security     Cooperative multi-input multi-output (C-MIMO)     Eigenspace-adaptive    

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Estimation of regional physical imports and exports of EW-MFA in China using monetary input-output tables

Nan LI, Tianzhu ZHANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 242-254 doi: 10.1007/s11783-012-0443-6

Abstract: This method uses provincial monetary input-output tables (MIOT) and international trade statistics.

Keywords： economy-wide material flow accounts (EW-MFA)     monetary input-output table (MIOT)     regional physical imports    

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An investigation on stress distribution effect on multi- piezoelectric energy harvesters

Hailu YANG, Dongwei CAO

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 301-307 doi: 10.1007/s11709-017-0404-z

Abstract: this paper, the effects of multiple piezoelectric elements on the generation of electrical energy and outputWhen the same multi piezoelectric units work together, if the stress state of the piezoelectric unitsis different, the total output energy affected by the connection mode.For uneven stress distribution, the optimal output mode is that each of the piezoelectric units rectified

Keywords： piezoelectric transducer     uneven stress     impedance matching     optimal energy output    

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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: channel state information (CSI) at transmitters results in a huge pilot overhead in massive multiple inputmultiple output (MIMO) systems due to the large number of antennas in the base station (BS).common sparsity and individual sparsity structures among geographically neighboring users exist in multi-user

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

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Diversity Glass Antennas for Tri-Band WiFi Applications Article

Peng Fei Hu, Kwok Wa Leung, Kwai Man Luk, Yong Mei Pan, Shao Yong Zheng

Engineering 2023, Volume 23, Issue 4,   Pages 157-169 doi: 10.1016/j.eng.2022.09.011

Abstract:

This paper investigates two novel polarization- and pattern-diversity glass dielectric resonator antennas (DRAs), both of which are for tri-band (2.4, 5.2, and 5.8 GHz) wireless fidelity (WiFi) applications. It also investigates what type of diversity antenna is most suitable for WiFi router applications by comparing the two DRAs, along with a new space-diversity glass DRA. These three diversity glass DRAs are also compared with a commercial space-diversity monopole pair to benchmark the performance of the glass DRA in WiFi router applications. In our polarization-diversity antenna, a double-port feeding scheme is developed to excite different DRA modes. The frequencies of the DRA modes are tuned by using a stepped DRA. For the pattern-diversity design, a stacked DRA is introduced to broaden the bandwidth for both the conical and broadside radiation modes. All three of the new diversity antennas were fabricated and measured to verify the simulations. In our experiment, the bit error rate (BER) of the three diversity glass antennas and the reference space-diversity monopole antenna was also measured, and the results are compared and discussed. It is found that the polarization-diversity omnidirectional DRA has the most stable BER among the three.
 

Keywords： WiFi Diversity antennas Multi-frequency     Glass     Dielectric resonator antennas     Multiple-input multiple-output    

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The Analysis on Output-input Ratio of Artificial Supplementary Energy in Agro-eco-engineering

Bian Yousheng,Liu Yingkun,Bian Jing

Strategic Study of CAE 2006, Volume 8, Issue 8,   Pages 28-32

Abstract:

The output-input ratio of the artificial Supplementary energy reflects the function and productivityThe output-input ratio for artificial supplementary energy of Henan Xinxian´10 peasant families

Keywords： agro-eco-engineering     output-input ratio of energy    

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Optimal synchronization control for multi-agent systems with input saturation: a nonzero-sum game Research Article

Hongyang LI, Qinglai WEI

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 7,   Pages 1010-1019 doi: 10.1631/FITEE.2200010

Abstract: The multi-agent game theory is introduced to transform the problem into a multi-agent .equilibrium can be achieved by solving the coupled Hamilton–Jacobi–Bellman (HJB) equations with nonquadratic input

Keywords： Optimal synchronization control     Multi-agent systems     Nonzero-sum game     Adaptive dynamic programming     Input saturation     Off-policy reinforcement learning     Policy iteration    

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STRATEGIES FOR A LOW-CARBON FOOD SYSTEM IN CHINA

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 2,   Pages 167-182 doi: 10.15302/J-FASE-2023494

Abstract:

● A provincial stage-specific greenhouse gas (GHG) accounting model for the Chinese food system was developed.

Keywords： greenhouse gas emissions     food system     life cycle assessment     environmental input-output analysis     mitigation    

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Multi-objective design optimization of a large-scale direct-drive permanent magnet generator for wind

Arash Hasssanpour ISFAHANI,Amirhossein Haji-Seyed BOROUJERDI,Saeed HASANZADEH

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 182-191 doi: 10.1007/s11708-014-0320-z

Abstract: This paper presents a simultaneous multi-objective optimization of a direct-drive permanent magnet synchronous,the total cost of the generator and blades, the annual energy output and the total mass of generatorand blades are chosen as objective functions for a multi-objective optimization.

Keywords： permanent magnet synchronous generator     wind turbine     direct-drive     multi-objective optimization     cost     mass     annual energy output     finite element analysis (FEA)    

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Output tracking of delayed logical control networks withmulti-constraint Research Articles

Ya-ting ZHENG, Jun-e FENG

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 2,   Pages 316-323 doi: 10.1631/FITEE.1900376

Abstract: In this study, the output tracking of delayed logical control networks (DLCNs) with state and controlBased on the augmented system, the output tracking problem is transformed into a set stabilization problemthe state transition matrix is computed, and a necessary and sufficient condition is derived for the outputtracking of a DLCN with multi-constraint.

Keywords： Logical control networks     Multi-constraint     Output tracking     Stabilization     State-dependent delay     Semi-tensor    

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Multi-objective optimization for the multi-mode finance-based project scheduling problem

Sameh Al-SHIHABI, Mohammad AlDURGAM

Frontiers of Engineering Management 2020, Volume 7, Issue 2,   Pages 223-237 doi: 10.1007/s42524-020-0097-1

Abstract: The FBSP is extended to consider different execution modes that result in the multi-mode FBSP (MMFBSPNo exact models are available for contractors who look for optimal solutions to the multi-objective MMFBSPMoreover, its current version, CPLEX 12.9, solves multi-objective optimization problems.This study presents a mixed-integer linear programming model for the multi-objective MMFBSP.Using CPLEX 12.9, we discuss several techniques that researchers can use to optimize a multi-objective

Keywords： multi-objective optimization     finance-based scheduling     multi-mode project scheduling     mixed-integer linear    

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Build orientation determination of multi-feature mechanical parts in selective laser melting via multi-objective

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0737-8

Abstract: This study proposes a method to determine the build orientation of multi-feature mechanical parts (MFMPsLastly, a multi-objective decision making method integrated by the technique for order of preference

Keywords： selective laser melting (SLM)     build orientation determination     multi-feature mechanical part (MFMP)     fuzzy analytical hierarchy process     multi-objective decision making (MODM)    

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Title Author Date Type Operation

Multi-user rate and power analysis in a cognitive radio network with massive multi-input multi-output

Shang LIU, Ishtiaq AHMAD, Ping ZHANG, Zhi ZHANG

Journal Article

Cutting CO emissions through demand side regulation: Implications from multi-regional input–output linear

Journal Article

A 39 GHz Dual-Channel Transceiver Chipset With an Advanced LTCC Package for 5G Multi-Beam MIMO Systems

Yiming Yu,Zhilin Chen,Chenxi Zhao,Huihua Liu,Yunqiu Wu,Wen-Yan Yin,Kai Kang

Journal Article

On optimization of cooperative MIMO for underlaid secrecy Industrial Internet of Things

Xinyao WANG, Xuyan BAO, Yuzhen HUANG, Zhong ZHENG, Zesong FEI

Journal Article

Estimation of regional physical imports and exports of EW-MFA in China using monetary input-output tables

Nan LI, Tianzhu ZHANG

Journal Article

An investigation on stress distribution effect on multi- piezoelectric energy harvesters

Hailu YANG, Dongwei CAO

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

Diversity Glass Antennas for Tri-Band WiFi Applications

Peng Fei Hu, Kwok Wa Leung, Kwai Man Luk, Yong Mei Pan, Shao Yong Zheng

Journal Article

The Analysis on Output-input Ratio of Artificial Supplementary Energy in Agro-eco-engineering

Bian Yousheng,Liu Yingkun,Bian Jing

Journal Article

Optimal synchronization control for multi-agent systems with input saturation: a nonzero-sum game

Hongyang LI, Qinglai WEI

Journal Article

STRATEGIES FOR A LOW-CARBON FOOD SYSTEM IN CHINA

Journal Article

Multi-objective design optimization of a large-scale direct-drive permanent magnet generator for wind

Arash Hasssanpour ISFAHANI,Amirhossein Haji-Seyed BOROUJERDI,Saeed HASANZADEH

Journal Article

Output tracking of delayed logical control networks withmulti-constraint

Ya-ting ZHENG, Jun-e FENG

Journal Article

Multi-objective optimization for the multi-mode finance-based project scheduling problem

Sameh Al-SHIHABI, Mohammad AlDURGAM

Journal Article

Build orientation determination of multi-feature mechanical parts in selective laser melting via multi-objective

Journal Article