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IEEE ICCE-China Workshop (ICCE-China)

作者： Zhijiong Wang Guoqing Li Yueming Gao U Kin Che Peng Un Mak Mang I Vai Min Du Department of Electrical and Computer Engineering University of Macau Macau China College of Physics and Information Engineering Fuzhou University Fuzhou China Key Lab of Medical Instrumentation & Pharmaceutical Technology of Fujian Province Fuzhou China State Key Laboratory of Analog and Mixed Signal VLSI University of Macau Macau China

ISBN: (纸本)9781509061945

Lateral flow immunoassay (LFIA) is widely utilized in a variety of point-of-care-test (POCT) applications. In this paper, we discuss the development of an ASIC based strip reader controller for LFIA. The control algorithm was proposed and implemented in Verilog HDL and fabricated into ASIC with 0.18 μm CMOS technology. Functional validation on both FPGA and ASIC implementations were presented. The ASIC controller occupied 0.946 mm 2 area and drawn only 2710.39 μW running at the frequency of 50 MHz. High sensitivity was achieved in the quantitative LFIA detection experiments, indicating this ASIC chip has fulfilled the requirement of operating an integrated and portable LFIA strip reading system.

关键词： Strips Immune system Optical sensors Biomedical optical imaging Fluorescence Optical filters Field programmable gate arrays

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Acceptance angle measurement of CMUTs and PZT ultrasonic transducers

Acceptance angle measurement of CMUTs and PZT ultrasonic tra...

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IEEE ICCE-China Workshop (ICCE-China)

作者： Yuanyu Yu Jian Zhang Jiujiang Wang Sio Hang Pun Yueming Gao U Kin Che Peng Un Mak Department of Electrical and Computer Engineering University of Macau Macau Faculty of Health Sciences University of Macau Macau State Key Laboratory of Analog and Mixed-Signal VLSI University of Macau Macau Key Lab of Medical Instrumentation & Pharmaceutical Technology of Fujian Province Fuzhou China

ISBN: (纸本)9781509061945

Capacitive micromachined ultrasonic transducer (CMUT) has shown many advantages and is an alternative to lead zirconate titanate (PZT) ultrasonic transducer, especially in biomedical imaging applications. Photoacoustic tomography (PAT) is a developing technique that provides the information of optics and ultrasound. Acceptance angle is a key factor in PAT imaging reconstruction. We evaluated the acceptance angle of our fabricated CMUTs and commercial PZT ultrasonic transducers and the measurement results showed that the CMUTs owned wide acceptance angles, which suggested that CMUT has the potential to improve the imaging quality in PAT.

关键词： Transducers Ultrasonic imaging Sonar equipment Ultrasonic transducers Acoustics Acoustic measurements Ultrasonic variables measurement

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Corrections to "Efficient Adaptive Turbo Equalization for Multiple-Input–Multiple-Output Underwater Acoustic Communications" [W. Duan, J. Tao, and Y. Rosa Zheng, IEEE J. Ocean. Eng ., 2017, DOI: 10.1109/JOE.2017.2707285]

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IEEE Journal of Oceanic engineering 2017年第3期42卷 752-752页

作者： W. Duan J. Tao Y. R. Zheng Qualcomm Technologies Inc. San Diego CA USA Department of Electrical and Computer Engineering Missouri University of Science and Technology Rolla MO USA Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education Southeast University Nanjing China Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai China

Equation In [1], (6) of the above named work is corrected.

关键词： MIMO Adaptive equalizers Underwater communication Underwater acoustics Least mean squares methods

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Analysis, design and implementation of a quasi-proportional-resonant controller for multifunctional capacitive-coupling grid-connected inverter 7

Analysis, design and implementation of a quasi-proportional-...

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7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015

作者： Ye, Tao Dai, Ningyi Lam, Chi-Seng Wong, Man-Chung Guerrero, Josep M. Electrical and Computer Engineering Department University of Macau China State Key Laboratory of Analog and Mixed-Signal VLSI University of Macau China Department of Energy Technology Aalborg University Denmark

ISBN: (纸本)9781467371506

The capacitive-coupling grid-connected inverter (CGCI) is able to achieve reactive power compensation and active power transfer simultaneously with a low operational voltage. The CGCI is coupled to the point of common coupling (PCC) via a second-order LC circuit, which makes its modeling and current control characteristics differs from the conventional inductive-coupling grid-connected inverter. The direct current tracking with hysteresis pulse width modulation (PWM) was used in previous studies. However, this method suffers from widely varying switching frequency and large current ripples. A Quasi-proportional-resonant (Quasi-PR) current controller is designed for the CGCI in this paper. Its modeling and parameter selection are studied in detail. In contrast with proportional-integration (PI) current controller, the Quasi-PR controller reduces steady-state error. It also generates a voltage reference for applying the carrier-based PWM to improve output waveform quality. Simulation results are provided to verify the Quasi-PR controller and comparison with the PI controller is also done. A lab-scale prototype is built. Experimental results are given to show the validity of the proposed control method and its design. © 2015 IEEE.

关键词： Controllers

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Improving secrecy performance via device-to-device jamming in cellular networks

Improving secrecy performance via device-to-device jamming i...

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International Conference on Wireless Communications and signal Processing (WCSP)

作者： Jian Ouyang Min Lin Wei-Ping Zhu Kang An Lei Wang Institute of Signal Processing and Transmission Nanjing University of Posts and Telecommunications Nanjing China Nanjing Institute of Telecommunication Technology Nanjing China Department of Electrical and Computer Engineering Concordia University Montreal QC Canada College of Communications Engineering PLA University of Science and Technology Nanjing China National Mobile Communications Research Laboratory Southeast University Nanjing China

ISBN: (纸本)9781509028610

In this paper, we study the secrecy performance of a cellular network, where a device-to-device (D2D) communication shares the spectral resources with a multi-antenna base station (BS). By assuming known the channel state information (CSI) of the legitimate user and using the maximal ratio transmission (MRT) at the BS, we first derive a closed-form expression of the ergodic secrecy capacity (ESC) for the wiretap channel as well as the ergodic capacity (EC) for the D2D link. Then, we present a simple yet efficient power allocation scheme to maximize the secrecy performance while satisfying the D2D transmission requirement. Finally, numerical results are given to demonstrate the merit of our study, concluding that the interference from the D2D communication can be exploited as a friendly jammer to enhance the security transmission in cellular networks.

关键词： Device-to-device communication Cellular networks Antennas Resource management Jamming Security Optimized production technology

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A 0.0045- $\hbox{mm}^{2}$ 32.4- $\mu\hbox{W} $ Two-Stage Amplifier for pF-to-nF Load Using CM Frequency Compensation

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IEEE Transactions on Circuits and Systems II: Express Briefs 2015年第3期62卷 246-250页

作者： Zushu Yan Wei Wang Pui-In Mak Man-Kay Law Rui P. Martins State Key Laboratory of Analog and Mixed-Signal VLSI and Faculty of Science and Technology Department of Electrical and Computer Engineering (ECE) University of Macau Macau China State Key Laboratory of Analog and Mixed-Signal VLSI and the Faculty of Science and Technology Department of Electrical and Computer Engineering (ECE) Universidade de Lisboa Lisboa Portugal

This brief reports an embedded capacitor multiplier (CM) frequency compensation technique to realize an extremely compact micropower two-stage amplifier for wide capacitive load (C L ) drivability. It features: 1) a valuable left half-plane zero to enhance the closed-loop stability over a wide range of C L ; 2) no extra bias circuit and power, as the CM is embedded into the first stage of the amplifier, and 3) only one very small (subpicofarad) compensation capacitor improving the transient settling and area efficiency. Detailed analytical treatments of the amplifier offer the critical insights for device sizing and optimization. Fabricated in 0.18-μm CMOS, the amplifier measures 3.06-MHz unity-gain frequency (UGF), 1.76-V/μs average slew rate (SR), and 74° phase margin (PM) at 20-pF C L , and 0.22-MHz UGF, 0.049-V/μs SR, and 59.8° PM at 15-nF C L . The die size is 0.0045 mm 2 , and power is 32.4 μW at 1.2 V. Competitive large- and small-signal figures of merit are achieved with respect to the state of the art.

关键词： Capacitors Noise Transfer functions Circuit stability Stability analysis CMOS integrated circuits Logic gates

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Hardware and software design of a low DC-link voltage and wide compensation range thyristor controlled LC-coupling hybrid active power filter

Hardware and software design of a low DC-link voltage and wi...

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IEEE Region 10 International Conference TENCON

作者： Lei Wang Chi-Seng Lam Man-Chung Wong Department of Electrical and Computer Engineering University of Macau State Key Laboratory of Analog and Mixed-Signal VLSI University of Macau Macau China

ISBN: (纸本)9781479986422

This paper presents the hardware and software design of an 110V-5kVA three-phase three-wire thyristor controlled LC-coupling hybrid active power filter (TCLC-HAPF). Unlike the active power filters (APFs) and the hybrid active power filters (HAPFs), the TCLC-HAPF can operate at a low dc-link voltage with wide compensation range. In this paper, the design of the thyristor and IGBT drivers, the transducer with signal conditioning circuits, and the software of digital control system of the TCLC-HAPF experimental prototype is presented. Finally, the performance of the designed TCLC-HAPF hardware prototype is verified by experimental results.

关键词： Active filters Thyristors Transducers Insulated gate bipolar transistors Inverters Hybrid power systems Prototypes

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Insecurity of Detector-Device-Independent Quantum Key Distribution

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Physical Review Letters 2016年第25期117卷 250505-250505页

作者： Shihan Sajeed Anqi Huang Shihai Sun Feihu Xu Vadim Makarov Marcos Curty Institute for Quantum Computing University of Waterloo Waterloo Ontario N2L 3G1 Canada Department of Electrical and Computer Engineering University of Waterloo Waterloo Ontario N2L 3G1 Canada College of Science National University of Defense Technology Changsha 410073 China Research Laboratory of Electronics Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA Department of Physics and Astronomy University of Waterloo Waterloo Ontario N2L 3G1 Canada Escuela de Ingeniería de Telecomunicación Department of Signal Theory and Communications University of Vigo Vigo E-36310 Spain

Detector-device-independent quantum key distribution (DDI-QKD) held the promise of being robust to detector side channels, a major security loophole in quantum key distribution (QKD) implementations. In contrast to what has been claimed, however, we demonstrate that the security of DDI-QKD is not based on postselected entanglement, and we introduce various eavesdropping strategies that show that DDI-QKD is in fact insecure against detector side-channel attacks as well as against other attacks that exploit devices’ imperfections of the receiver. Our attacks are valid even when the QKD apparatuses are built by the legitimate users of the system themselves, and thus, free of malicious modifications, which is a key assumption in DDI-QKD.

关键词： Quantum communication Quantum cryptography Quantum information processing Quantum optics

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Sum-Rate and Power Scaling of Massive MIMO Systems with Channel Aging

Sum-Rate and Power Scaling of Massive MIMO Systems with Chan...

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作者： Kong, Chuili Zhong, Caijun Papazafeiropoulos, Anastasios K. Matthaiou, Michail Zhang, Zhaoyang Institute of Information and Communication Engineering Zhejiang University Hangzhou310027 China National Mobile Communications Research Laboratory Southeast University Nanjing210096 China Department of Communications and Signal Processing Group Imperial College London London United Kingdom School of Electronics Electrical Engineering and Computer Science Queen's University Belfast Belfast United Kingdom

This paper investigates the achievable sum-rate of massive multiple-input multiple-output (MIMO) systems in the presence of channel aging. For the uplink, by assuming that the base station (BS) deploys maximum ratio combining (MRC) or zero-forcing (ZF) receivers, we present tight closed-form lower bounds on the achievable sum-rate for both receivers with aged channel state information (CSI). In addition, the benefit of implementing channel prediction methods on the sum-rate is examined, and closed-form sum-rate lower bounds are derived. Moreover, the impact of channel aging and channel prediction on the power scaling law is characterized. Extension to the downlink scenario and multicell scenario is also considered. It is found that, for a system with/without channel prediction, the transmit power of each user can be scaled down at most by 1/√M (where M is the number of BS antennas), which indicates that aged CSI does not degrade the power scaling law, and channel prediction does not enhance the power scaling law;instead, these phenomena affect the achievable sum-rate by degrading or enhancing the effective signal to interference and noise ratio, respectively. © 2015 IEEE.

关键词： Channel state information

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Generalized Type III controller design interface for DC-DC converters

Generalized Type III controller design interface for DC-DC c...

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IEEE Region 10 International Conference TENCON

作者： Ka-Fai Chan Chi-Seng Lam Wen-Liang Zeng Wen-Ming Zheng Sai-Weng Sin Man-Chung Wong State Key Laboratory of Analog and Mixed-Signal VLSI University of Macau Macao China Department of Electrical and Computer Engineering University of Macau Macao China

ISBN: (纸本)9781479986422

In this paper, a generalized Type III controller design interface for DC-DC converters is built and presented in order to calculate the compensator parameter values in a more convenient and fast way. When the specifications of the DC-DC converter (buck, boost, buck-boost, etc.) are input to the MATLAB design interface, the corresponding parameters values (resistors and capacitors) of the Type III compensator and the bode plot of the DC-DC converter open loop gain can be obtained. By designing the Type III controller though this interface, the DC-DC converter can obtain stable and fast transient response performances with small steady state error. Finally, simulation results using 65-nm CMOS technology are presented to verify the developed generalized Type III controller design interface for different DC-DC converters.

关键词： DC-DC power converters Transfer functions Modulation Control systems Frequency conversion Transient response Steady-state

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