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Design and optimization of a 0.5 V CMOS LNA for 2.4-GHz WSN application

Journal of Semiconductors 2012年第10期33卷 109-115页

作者：陈亮李智群 Institute of RF-&OE-ICs Southeast University Engineering Research Center of RF-ICs&RF-Systems Ministry of EducationSoutheast University Jiangsu Provincial Key Laboratory of Sensor Network Technology

This paper presents a low noise amplifier（LNA）,which could work at an ultra-low voltage of 0.5 V and was optimized for WSN application using 0.13μm RF-CMOS *** circuit was analyzed and a new optimization method for a folded cascode LNA was *** results of the proposed circuit demonstrated a power gain of 14.13 dB,consuming 3 mW DC power,showing 1.96 dB NF and an input 1-dB compression point of -19.9 *** input power matching（S_（11）） and output power matching（S_（22）） were below -10 *** results indicate that this LNA is fully applicable to low voltage and low power applications.

关键词： LNA WSN CMOS

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Design of low power common-gate low noise amplifier for 2.4 GHz wireless sensor network applications

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Journal of Semiconductors 2012年第10期33卷 85-91页

作者：张萌李智群 Institute of RF-&OE-ICs Southeast University Engineering Research Center of RF-ICs&RF-Systems Ministry of EducationSoutheast University Jiangsu Provincial Key Laboratory of Sensor Network Technology

This paper presents a differential low power low noise amplifier designed for the wireless sensor network （WSN） in a TSMC 0.18μm RF CMOS process.A two-stage cross-coupling cascaded common-gate（CG） topology has been designed as the *** first stage is a capacitive cross-coupling *** can reduce the power and noise *** second stage is a positive feedback cross-coupling topology,used to set up a negative resistance to enhance the equivalent Q factor of the inductor at the load to improve the gain of the LNA.A differential inductor has been designed as the load to achieve reasonable *** inductor has been simulated by the means of momentum electromagnetic simulation in ADS.A ＂double-π＂ circuit model has been built as the inductor model by iteration in *** inductor has been fabricated separately to verify the model. The LNA has been fabricated and *** LNA works well centered at 2.44 *** measured gain S_（21） is variable with high gain at 16.8 dB and low gain at 1 *** NF（noise figure） at high gain mode is 3.6 dB,the input referenced 1 dB compression point（IP1dB） is about -8 dBm and the IIP3 is 2 dBm at low gain *** LNA consumes about 1.2 mA current from 1.8 V power supply.

关键词： low noise amplifier wireless sensor network low power inductor modeling cross-coupling positive feedback

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Achieve Personalized Anonymity Through Query Blocks Exchanging

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China Communications 2016年第11期13卷 106-118页

作者： Chunguang Ma Lei Zhang Songtao Yang Xiaodong Zheng Pinhui Ke College of Computer Science and Technology Harbin Engineering University Fujian Provincial Key Laboratory of Network Security and Cryptology Fujian Normal University College of Information and Electronic Technology Jiamusi University College of Applied Technology Qiqihar University

In cyberspace security,the privacy in location-based services(LBSs) becomes more critical. In previous solutions,a trusted third party(TTP) was usually employed to provide disturbance or obfuscation,but it may become the single point of failure or service bottleneck. In order to cope with this drawback,we focus on another important class,establishing anonymous group through short-range communication to achieve k-anonymity with collaborative users. Along with the analysis of existing algorithms,we found users in the group must share the same maximum anonymity degree,and they could not ease the process of preservation in a lower one. To cope with this problem,we proposed a random-QBE algorithm to put up with personalized anonymity in user collaboration algorithms,and this algorithm could preserve both query privacy and location privacy. Then we studied the attacks from passive and active adversaries and used entropy to measure user's privacy level. Finally,experimental evaluations further verify its effectiveness and efficiency.

关键词： cyberspace security location-based services collaborative users personalized anonymity query and location privacy

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A survey of botnet size measurement

A survey of botnet size measurement

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2nd International Conference on networking and Distributed Computing, ICNDC 2011

作者： Liu, Shangdong Gong, Jian Yang, Wang Jakalan, Ahmad Key Laboratory of Computer Network Technology of Jiangsu Province Southeast University Nanjing China

ISBN: (纸本)9780769544274

Botnet size is one of the most important characteristics to evaluate the threat of botnet. Previous studies of botnet size basically focus on details and concreteness instead of nature of problem due to polymorphic, versatile, complex behavior of botnet and partial observation on network. This paper investigates the nature of botnet size, upon which four issues are introduced. The paper summarizes the existing solutions to the four issues and analyzes the challenges to resolve them deeply. Finally, some valuable research works of next step are proposed. © 2011 IEEE.

关键词： Botnet

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Residential HVAC Aggregation Based on Risk-averse Multi-armed Bandit Learning for Secondary Frequency Regulation

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Journal of Modern Power Systems and Clean Energy 2020年第6期8卷 1160-1167页

作者： Xinyi Chen Qinran Hu Qingxin Shi Xiangjun Quan Zaijun Wu Fangxing Li the School of Electrical Engineering Southeast UniversityNanjingChina Jiangsu Provincial Key Laboratory of Smart Grid Technology and Equipment NanjingChina the School of Electrical Engineering and Computer Science University of TennesseeKnoxvilleUSA

As the penetration of renewable energy continues to increase,stochastic and intermittent generation resources gradually replace the conventional generators,bringing significant challenges in stabilizing power system ***,aggregating demand-side resources for frequency regulation attracts attentions from both academia and ***,in practice,conventional aggregation approaches suffer from random and uncertain behaviors of the users such as opting out control *** risk-averse multi-armed bandit learning approach is adopted to learn the behaviors of the users and a novel aggregation strategy is developed for residential heating,ventilation,and air conditioning(HVAC)to provide reliable secondary frequency *** with the conventional approach,the simulation results show that the risk-averse multiarmed bandit learning approach performs better in secondary frequency regulation with fewer users being selected and opting out of the ***,the proposed approach is more robust to random and changing behaviors of the users.

关键词： Heating ventilation and air conditioning(HVAC) load control multi-armed bandit online learning secondary frequency regulation

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BCE-PPDS: Blockchain-based cloud–edge collaborative privacy-preserving data sharing scheme for IoT

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Future Generation computer Systems 2026年 174卷

作者： Guijuan Wang Qi Liu Zhongyuan Yu Hongliang Zhang Anming Dong Key Laboratory of Computing Power Network and Information Security Ministry of Education Shandong Computer Science Center Qilu University of Technology (Shandong Academy of Sciences) Jinan Shandong 250353 China Shandong Provincial Key Laboratory of Industrial Network and Information System Security Shandong Fundamental Research Center for Computer Science Jinan Shandong 250353 China China University of Petroleum Qingdao Shandong 266000 China

Internet of Things (IoT) devices generate large amounts of data every day that can be combined with intelligent platforms for predictive analytics and scientific research. However, concerns about privacy and security hinder the willingness of individuals to share data. Blockchain emerged as a promising infrastructure for facilitating secure data sharing due to its decentralized, immutability, and auditable benefits. In this paper, we propose a blockchain-based cloud–edge collaborative privacy protection data sharing scheme (BCE-PPDS), which is decentralized and enables data requesters (DRs) to search data resources using smart contracts to efficiently obtain target data. To protect the identity privacy of data owners (DOs), we propose a novel certificateless linkable ring signature algorithm with efficient performance. This algorithm is not only suitable for deployment on resource-limited IoT devices, so that DOs can realize anonymous identity authentication, but also can aggregate the generated ring signatures for batch verification, so as to improve the efficiency of signature verification. In addition, we designed a key distribution algorithm using the Asmuth–Bloom secret sharing scheme to ensure the security of the key. Under the random oracle model, BCE-PPDS is provably secure. The experimental results verify that BCE-PPDS is efficient and practical.

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Low power consumption reduced state and transition MLSE in optical interconnects

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Science China(Information Sciences) 2023年第10期66卷 325-326页

作者： Weihao NI Fan LI Wei WANG Zhibin LUO Xingwen YI Yi CAI Zhaohui LI School of Electronics and Information Technology Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems Sun Yat-sen University Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Jiangsu Engineering Research Center of Novel Optical Fiber Technology and Communication Network Suzhou Key Laboratory of Advanced Optical Communication Network Technology Soochow University

Intensity modulation/direct detection(IM/DD) optical fiber communication system is an appropriate candidate for optical interconnect applications due to its low cost and low power consumption characteristics [1]. 4-level pulse amplitude modulation(PAM-4) is widely discussed in optical interconnects due to its simpler transceiver configuration and implementation [2].

关键词： Optical interconnects

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Mobile Anchor Assisted Localization in Wireless Sensor networks with Regular Polygon Path

Mobile Anchor Assisted Localization in Wireless Sensor Netwo...

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2013 IEEE 4th International Conference on Software Engineering and Service Science

作者： Huanqing Cui Chuan'ai Zhou Xiaojing Meng Rong Hua Shandong Provincial Key Laboratory of Computer Network Shandong Computer Science Center College of Information Science and Engineering Shandong University of Science and Technology

ISBN: (纸本)9781467349994

Mobile anchor assisted localization methods for wireless sensor networks can decrease the cost while improving the accuracy,and the moving trajectory is an interesting and basic issue in this kind of *** paper proposes the regular polygon path derived from Circle,which is the best determined *** upper-bound of the polygon and the localization scheme are presented,and the performance is evaluated by simulations.

关键词： wireless sensor network localization mobile anchor regular polygon path

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Nonequilibrium transport and the fluctuation theorem in the thermodynamic behaviors of nonlinear photonic systems

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Physical Review Research 2025年第1期7卷 013084-013084页

作者： Yang Liu Jincheng Lu Zhongfei Xiong Fan O. Wu Demetrios Christodoulides Yuntian Chen Jian-Hua Jiang School of Physical Science and Technology & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University 1 Shizi Street Suzhou 215006 China Key Laboratory of Efficient Low-carbon Energy Conversion and Utilization of Jiangsu Provincial Higher Education Institutions School of Physical Science and Technology Suzhou University of Science and Technology Suzhou 215009 China School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China CREOL College of Optics and Photonics University of Central Florida Orlando Florida 32816-2700 USA Ming Hsieh Department of Electrical and Computer Engineering University of Southern California Los Angeles California 90089 USA School of Biomedical Engineering Division of Life Sciences and Medicine University of Science and Technology of China Hefei 230026 China Suzhou Institute for Advanced Research University of Science and Technology of China Suzhou 215123 China School of Physical Sciences University of Science and Technology of China Hefei 230026 China

Nonlinear multimode optical systems have attracted substantial attention due to their rich physical properties. Complex interplay between the nonlinear effects and mode couplings makes it difficult to understand the collective dynamics of photons. Authors of recent studies have shown that such collective phenomena can be effectively described by Rayleigh-Jeans thermodynamics theory, which is a powerful tool for the study of nonlinear multimode photonic systems. These systems, in turn, offer a compelling platform for investigating fundamental issues in statistical physics, attributed to their tunability and the ability to access negative temperature regimes. However, to date, a theory for nonequilibrium transport and fluctuations is yet to be established. Here, we employ full counting statistics theory to study the nonequilibrium transport of particles and energy in nonlinear multimode photonic systems in both positive and negative temperature regimes. Furthermore, we discover that, in situations involving two reservoirs of opposite temperatures and chemical potentials, an intriguing phenomenon known as the loop current effect can arise, wherein the current in the positive energy sector runs counter to that in the negative energy sector. In addition, we numerically confirm that the fluctuation theorem remains applicable in optical thermodynamics systems across all regimes, from positive temperatures to negative ones. Our findings closely align with numerical simulations based on first-principles nonlinear wave equations. In this paper, we seek to deepen the understanding of irreversible nonequilibrium processes and statistical fluctuations in nonlinear many-body photonic systems which will enhance our grasp of collective phenomena of photons and foster a fruitful intersection between optics and statistical physics.

关键词： Chemical potential

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Study of dynamic timeout strategy based on flow rate metrics in high-speed networks 06

Study of dynamic timeout strategy based on flow rate metrics...

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1st International Conference on Scalable Information Systems, InfoScale '06

作者： Zhou, Ming-Zhong Gong, Jian Ding, Wei Southeast Univ. and Jiangsu Province Key Laboratory of Computer Networking Technology and Jiangsu Province Key Laboratory of Network and Information Security Nanjing Jiangsu China

ISBN: (纸本)1595934286

The measurements based on flow characteristics are playing more and more important roles in the analysis of network Behavior. As one of main methods for flow recognition, the timeout strategies have a significant impact on the correctness and performance of flow measurements. This paper discusses the state-of-art of flow timeout strategies, and explains where they are applicable and their shortcomings. To deal with short flows that take a large part of the total flows in the networks, the paper proposes the Dynamic Timeout Strategy (DToS) by analyzing flows distribution and flow rate metrics in details. The studies show that this method can improve the performances of network measurement and the efficiency of the resource usage by using different timeout strategics to deal with flows that have different rate features based on integrated usage analyses of target network.s It can also apperceive network abnormal behavior efficiently, and then take emergent measures to ensure the safety of measurement system. Some experiments have been carried out to show the rationality of DToS strategy. The applicable area of this strategy is also analyzed at the end of this paper. © 2006 ACM.

关键词： Data flow analysis

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