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The 2011 International Conference on Materials engineering for Advanced Technologies(ICMEAT 2011)

作者： CHENG Yong WEN Lei YANG Ling WANG Wei ZHOU Yong WANG Feng Jiangsu Technology and Engineering Center for Meteorological Sensor Network Nanjing University of Information Science & Technology Computer School Wuhan University Bin Jiang College Nanjing University of Information Science & Technology

The problem solved in this paper is to design a video streaming protocol which is accomplished by the application layer multicast in the WLANThis protocol, WVALM, divides the whole video streaming into small blocks, and achieves the requirement of streaming multicast by multicasting those small blocksThe receiver and the sender use streaming window and retransmit window respectively to coordinate their relationshipThrough experiment test, WVALM achieves the original object and could work well in the wireless environment.

关键词： video streaming,application layer multicast,WLAN,p2p

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Experimental verification of NP-complete problems via linear optics 13

Experimental verification of NP-complete problems via linear...

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13th International Conference on Wireless Communications and Signal Processing, WCSP 2021

作者： Li, Jian Liu, Tongjun Hou, Tianlei Wang, Xiaorun Liu, Chenxi Dai, Pan Wang, Qin Nanjing University of Posts and Telecommunications Inst. of Quant. Info. and Technology Broadband Wireless Communication and Sensor Network Technology National Engineering Research Center Key Lab of Ministry of Education Telecommunication and Networks Nanjing China

ISBN: (纸本)9781665407854

Non-deterministic polynomial (NP)-complete problems are collections of intractable problems for classical computers, but they may be easier to solve for quantum computers. Considering that practical quantum computers and networks are still under development, it is necessary to find alternatives to solve these problems. Simulations with linear optics offer a good choice since much of the research on quantum information is executed with this approach. In this work, based on Aaronson's protocol (Theory Comput, 5, 1, 2009) ad Arrazola et. al.'s linear optics scheme (npj Quantum Inf, 78, 022310, 2018), we present a demonstration of the NP-complete 2-out-of-4 SAT problem for 4 variables. The experimental results show that NP-complete problems can be well simulated through linear optical systems. © 2021 IEEE.

关键词： Quantum optics

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Towards single-molecule optoelectronic devices

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Science China Chemistry 2018年第11期61卷 1368-1384页

作者： Lijue Chen Anni Feng Maoning Wang Junyang Liu Wenjing Hong Xuefeng Guo Dong Xiang State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Collaborative Innovation Center of Chemistry for Energy Materials Xiamen University Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology Institute of Modern Optics College of Electronic Information and Optical Engineering Nankai University Beijing National Laboratory for Molecular Sciences State Key Laboratory for Structural Chemistry of Unstable and Stable SpeciesCollege of Chemistry and Molecular Engineering Peking University

Benefiting from the development of molecular electronics and molecular plasmonics, the interplay of light and electronic transport in molecular junctions has attracted growing interest among researchers in both fields, leading to a new research direction of "single-molecule optoelectronics". Here, we review the latest developments of photo-modulated charge transport,electroluminescence and Raman spectroscopy from single-molecule junctions, and suggest future directions for single-molecule optoelectronics.

关键词： molecular electronics molecular optoelectronics single-molecule junction

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Comprehensive Analysis of Secure Data Aggregation Scheme for Industrial Wireless sensor network

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Computers, Materials & Continua 2019年第8期61卷 583-599页

作者： Weidong Fang Wuxiong Zhang QianQian Zhao Xiaohong Ji Wei Chen Biruk Assefa Key Laboratory of Wireless Sensor Network&Communication Shanghai Institute of Micro-system and Information TechnologyChinese Academy of SciencesShanghai201899China Shanghai Research Center for Wireless Communication Shanghai201210China College of Physics and Electronic Information Engineering Qinghai University for NationalitiesXining810007China School of Computer Science and Technology China University of Mining and TechnologyXuzhou221116China Infromation Communication Technology Department Wollo UniversityDessie EthiopiaEthiopia

As an Industrial Wireless sensor network(IWSN)is usually deployed in a harsh or unattended environment,the privacy security of data aggregation is facing more and more ***,the data aggregation protocols mainly focus on improving the efficiency of data transmitting and aggregating,alternately,the aim at enhancing the security of *** performances of the secure data aggregation protocols are the trade-off of several metrics,which involves the transmission/fusion,the energy efficiency and the security in Wireless sensor network(WSN).Unfortunately,there is no paper in systematic analysis about the performance of the secure data aggregation protocols whether in IWSN or in *** consideration of IWSN,we firstly review the security requirements and techniques in WSN data aggregation in this ***,we give a holistic overview of the classical secure data aggregation protocols,which are divided into three categories:hop-by-hop encrypted data aggregation,end-to-end encrypted data aggregation and unencrypted secure data *** this way,combining with the characteristics of industrial applications,we analyze the pros and cons of the existing security schemes in each category qualitatively,and realize that the security and the energy efficiency are suitable for ***,we make the conclusion about the techniques and approach in these categories,and highlight the future research directions of privacy preserving data aggregation in IWSN.

关键词： Industrial wireless sensor network wireless sensor network cyber security secure data aggregation protocol

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A 2 MHz 1 V programmable gain amplifier for WSN application

A 2 MHz 1 V programmable gain amplifier for WSN application

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2013 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2013

作者： Chengsi, Yang Zhiqun, Li Institute of RF- and OE-ICs Southeast University Nanjing China Engineering Research Center of RF-ICs and System Ministry of Education Nanjing China Key Laboratory of Sensor Network Technology of Jiangsu Province Wuxi China

ISBN: (纸本)9781479910274

This paper presents a low-voltage and low-power programmable gain amplifier (PGA) for Wireless sensor network (WSN) in 0.18 μm CMOS process. MOSFETs biased to moderate inversion region are applied in order to achieve maximum voltage gain, low device dissipation, and high linearity, simultaneously. The proposed PGA consists of three fixed-gain stages and a variable-gain stage. It works at 2 MHz with a voltage gain range of 0 dB to 70 dB in steps of 2 dB. Postsimulation results show that the -3 dB-bandwidth is higher than 6.6 MHz with capacitive loads of 2 pF. The whole PGA consumes less than 1.26 mW with a 1 V supply. © 2013 IEEE.

关键词： Wireless sensor networks

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A low power programmable gain amplifier with 70-dB control range in CMOS technology

A low power programmable gain amplifier with 70-dB control r...

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2011 IEEE 13th International Conference on Communication technology, ICCT 2011

作者： Zhang, Bingzhao Li, Zhiqun Institute of RF and OE ICs Southeast University Nanjing 210096 China Engineering Research Center of RF-ICs and RF-Systems Ministry of Education Nanjing 210096 China Sensor Network Technology Research Center Southeast University Wuxi 214135 China

ISBN: (纸本)9781612843070

This paper presents a low power programmable gain amplifier (PGA) for low intermediate frequency (IF) Zigbee transceiver applications in 0.18-μm CMOS process. The designed PGA uses ac coupling between the stages to avoid the amplification of DC offset. The post-simulations demonstrate the gain of the PGA can be varied linearly from 0 dB to 70 dB with a step size of 2 dB. The PGA can operate even if an input DC offset of 30 mV. The differential output swing is 1.2 Vpp. The simulated 3 dB bandwidth is higher than 15 MHz and the gain error is less than 0.7 dB with capacitive loads of 2 pF. The PGA consumes only 4mW from 1.8 V supply. The chip area is 1.50×0.80 mm2. © 2011 IEEE.

关键词： CMOS integrated circuits

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Design of a low-power high-speed CMOS frequency divider for WSN applications

Design of a low-power high-speed CMOS frequency divider for ...

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2011 IEEE 13th International Conference on Communication technology, ICCT 2011

作者： Sun, Zhenhua Li, Zhiqun Institute of RF- and OE-ICs Southeast University Nanjing 210096 China Engineering Research Center of RF-ICs and RFIC-Systems Ministry of Education Nanjing 210096 China Sensor Network Technology Research Center Southeast University Wuxi 214135 China

ISBN: (纸本)9781612843070

A 5-GHz CMOS programmable frequency divider is presented in this paper, whose modulus can be varied from 2403 to 2480 for 2.4-GHz ZigBee applications. The divider has two blocks, a dual-modulus prescaler (DMP) integrating a frequency halving circuit, and a pulse-swallow counter. In the DMP, an improved phase switching technique is used to reduce the power consumption. Designed in 0.18-μm CMOS process, simulation shows that the divider can operate over a wide range of 1-6.5 GHz, consumes 7.7 mW from a single 1.8 V supply, and occupies a chip area of approximately 0.02 mm2. © 2011 IEEE.

关键词： CMOS integrated circuits

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A third order active RC complex band pass filter for wireless sensor network application

A third order active RC complex band pass filter for wireles...

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2011 IEEE 13th International Conference on Communication technology, ICCT 2011

作者： Liang, Xiaowei Li, Zhiqun Institute of RF- and OE-ICs Southeast University Nanjing 210096 China Engineering Research Center of RF-ICs and RFIC-Systems Ministry of Education Nanjing 210096 China Sensor Network Technology Research Center Southeast University Wuxi 214135 China

ISBN: (纸本)9781612843070

A third order active RC complex band pass filter design for wireless sensor network (WSN) application is presented. The filter is based on leapfrog structure and uses an automatic tuning system to make the RC time constant stable. It is designed in TSMC 0.18 μm CMOS technology. The simulation results show that the filter is centered at 2 MHz with 3 MHz of bandwidth after tuning, the pass band gain of the filter is about -2 dB and the ripple in the pass band is about 0.5 dB. The image rejection ratio (IRR) is about 30 dB around -2 MHz and the adjacent channel rejection (ACR) around 6 MHz is about 30 dB. The precision of the automatic tuning system is within 3%. The filter consumes 3.6 mA under 1.8 V power supply. © 2011 IEEE.

关键词： Bandpass filters

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A low power consumption, low phase noise, and wide tuning range LC VCO with ACC

A low power consumption, low phase noise, and wide tuning ra...

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2011 IEEE 13th International Conference on Communication technology, ICCT 2011

作者： Qi, Xiaodong Li, Zhiqun Institute of RF and OE ICs Southeast University Nanjing 210096 China Engineering Research Center of RF-ICs and RF-Systems Ministry of Education Nanjing 210096 China Sensor Network Technology Research Center Southeast University Wuxi 214135 China

ISBN: (纸本)9781612843070

A 4.8GHz LC voltage controlled oscillator (VCO) for WSN Applications is designed based on TSMC 0.18 μm RF CMOS process. The VCO adopts complementary differential negative resistance structure with switch resistor biasing which achieves good phase noise performance and realizing low power consumption. The 3-bit switch capacitor array provides wide tuning range and the 6-bit switch resistors array provides varied biasing current by auto current calibration (ACC) circuit. With a 1.8V supply voltage, the post-simulated result achieves 27.7% tuning range that can compensate the frequency deviation due to process corners. The post simulated phase noise is -119dBc/Hz@1MHz at frequency of 2.44GHz. The operating current of the VCO core is from 0.4mA to 3.3mA. Finally, the chip size of the VCO core is 0.3mm2 and the whole chip size is 0.8×1.2mm2 with testing buffer and pads. © 2011 IEEE.

关键词： Variable frequency oscillators

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A 2.4 GHz low power common-gate low noise amplifier for Wireless sensor network applications

A 2.4 GHz low power common-gate low noise amplifier for Wire...

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2011 IEEE 13th International Conference on Communication technology, ICCT 2011

作者： Zhang, Meng Li, Zhiqun Institute of RF- and OE-ICs Southeast University Nanjing 210096 China Engineering Research Center of RF-ICs and RFIC-Systems Ministry of Education Nanjing 210096 China Sensor Network Technology Research Center Southeast University Wuxi 214135 China

ISBN: (纸本)9781612843070

This paper provides a low power low noise differential amplifier designed for Wireless sensor network (WSN) in TSMC 0.18 μm RF CMOS process. It should work well centered at 2.44 GHz frequency and the forward gain is variable with highest gain at 12 dB to lowest gain at -2 dB by 2 dB steps. In this paper, a two-stage cascade common-gate (CG) topology and two external inductor choke coils are used to achieve input matching of LNA under low power consumption, and a differential inductor has been designed as the load to achieve reasonable gain and reduce chip area simultaneously. It has been simulated and verified by means of Cadence Spectre. The NF (Noise Figure) at high gain (12.5 dB) is 3.9 dB, the input referenced 1dB compression point (IP1dB) is about -1 dBm at lowest gain mode. The LNA consumes about 1.5 mA current from 1.8 V power supply. © 2011 IEEE.

关键词： Wireless sensor networks

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