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18th International Symposium on Intelligent Signal Processing and Communication systems, ISPACS 2010

作者： Yu, Hang Li, Yan Jiang, Lai Ji, Zhen Shenzhen City Key Laboratory of Embedded System Design Shenzhen University China College of Computer Science and Software Engineering Shenzhen University China

ISBN: (纸本)9781424473717

Amplitude shift keying (ASK) and pulse position modulation (PPM) can be used to provide self-synchronized data and clock for wireless implantable neural recoding systems, and therefore simplifies the complexity of the implanted circuits. In this paper, a novel extremely low power receiver designed for such a scheme is discussed. The integrated receiver utilizes inductive load implemented by PMOS device to boost the voltage gain of the front end amplifier. A charge-pump based CDR circuit is utilized to extract the clock and non-retumto-zero (NRZ) data directly from the demodulated waveform, and the required reference voltage is adaptively generated to cover a large data rate range. The receiver design is validated using 0.25 μ m CMOS technology. It exhibits a sensitivity of ∼lmV at 1.5MHz, covers an input data rate between 7kbitls and 45.5kbit/s, and consumes only ∼3 1μ W of power. © 2010 IEEE.

关键词： Amplitude shift keying

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The preference relation and its application in the information system

The preference relation and its application in the informati...

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2011 IEEE International Conference on computer Science and Automation Engineering, CSAE 2011

作者： Mingqing, Zhao Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai China College of Information Science and Engineering SUST Qingdao China

ISBN: (纸本)9781424487257

In order to strengthen the traditional information system's capacity of describing practical problems, preference relation is introduced into information system and the concepts of preference information system, preference decision table, and information utility function are offered in this paper. In addition, the existence theorem of information utility function and several applications of information utility function in knowledge acquisition are provided. © 2011 IEEE.

关键词： Knowledge acquisition

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Comparative study of delta-sigma modulators for the fractional-N PLL in WBAN

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2012 International Conference on Electrical and Electronics Engineering, ICEE 2012

作者： Zeng, Qiming Yu, Hang Lai, Jiang Li, Yan Ji, Zhen Shenzhen City Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University Shenzhen Guangdong 518060 China

ISBN: (纸本)9781461449805

A delta-sigma modulator (DSM)-based fractional-N frequency synthesizer is the key component of wireless transceiver in wireless body area network (WBAN) system. The noise suppression performance, integration, and power of the DSM are difficult to balance in implementation. In order to choose a proper DSM topology for WBAN applications, a comparative study of single-loop DSM and Multi-stAge noise SHaping (MASH) DSM are presented in this chapter. Simulation and experiment results show that the MASH DSM is more suitable for WBAN applications with higher integration, lower power, and unconditional stability. Implemented in a 90 nm CMOS process, the proposed MASH DSM occupies an area of 40.5 × 45 μm and its power consumption is only 34 μW. © 2014 Springer Science+Business Media New York.

关键词： Modulators

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A low power limiting amplifier designed for the RSSI of a 5.8 GHz ETC receiver

A low power limiting amplifier designed for the RSSI of a 5....

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International Conference on computer, Informatics, Cybernetics and Applications 2011, CICA 2011

作者： Yu, Hang Li, Yan Wei, Wongchen Jiang, Lai Lin, Shengyue Ji, Zhen Shenzhen City Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University Shenzhen Guangdong 518060 China

ISBN: (纸本)9789400718388

A low power limiting amplifier designed for received signal strength indicator of a 5.8 GHz ETC receiver is presented in this chapter. systematic analysis is carried out first to determine the optimal number of gain stages and the gain-bandwidth product of each stage. Then the detailed circuit design is discussed. The limiting amplifier consists of twelve AC-coupled gain stages, and is implemented using the standard CMOS 0.18 μm technology. The design is validated under Zeni design environment, and the simulation results show that the limiting amplifier achieves overall small signal gain of 98 dB, with 22 MHz bandwidth. Powered by a 1.8 V DC supply voltage, the total power consumption of the limiting amplifier is only 5.5 mW. © 2012 Springer Science+Business Media B.V.

关键词： Bandwidth

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Based on transmission line compositing left and right rules to realize optimal matching in RF part of 77GHz automotive radar

Based on transmission line compositing left and right rules ...

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International Radar Symposium, IRS 2011

作者： Gui, Renzhou Key Laboratory of Embedded System and Service Computing Ministry of Eduction College of Electronics and Information Engineering Tongji University Shanghai 200092 China State Key Laboratory of Millimeter Waves Nanjin 210096 China

ISBN: (纸本)9783927535282

77GHz Automotive radar based on SiGe technique is the hot topics. The optimal matching in the RF part of the automotive radar should be solved and considered firstly. Left hand material(LHM) has special properties such as low loss, negative phase velocity. The paper focus on designing a new transmission line which is made by LHM and RHM (right hand material) together. We analysis the theory of the TL (transmission line) based on compositing LHM and RHM together, then design the match circuits based on the TL. Moreover, the simulating results of the circuit based on the special TL are shown. Lastly, the possibility of using the TL to match at the automotive radar system is valued. © 2011 DGON.

关键词： Electric lines

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Design issues in ZigBee-based sensor network for healthcare applications

Design issues in ZigBee-based sensor network for healthcare ...

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2012 9th IEEE International Conference on Networking, Sensing and Control, ICNSC 2012

作者： Choi, Jin Soo Zhou, MengChu Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ 07102 United States Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 200092 China

ISBN: (纸本)9781467303880

IEEE 802.15.4/ZigBee sensor networks support small power consumption and node expansion compared to other network standards for WSN. Body sensor networks (BSN) require a number of sensors for sensing medical information from human body, and low power consumption to monitor a patient's status for a long time. However, ZigBee has limited bandwidth and is thus hard to support real time data transmission because of the adoption of CSMA-CA as its medium access control (MAC) protocol. In this paper, we will analyze the reasonable number of nodes, size of payload and packet interval for best QoS for such network. It is found that an appropriate MAC parameters setting can improve the QoS compared to the default setting in IEEE 802.15.4 specification. The effective data rate, average end-to-end delay and packet delivery ratio are found via simulation for various network settings. The results are useful for the construction of ZigBee networks for patient monitoring and care. © 2012 IEEE.

关键词： Medium access control

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Web service composition techniques in a health care service platform

Web service composition techniques in a health care service ...

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2011 IEEE 9th International Conference on Web services, ICWS 2011

作者： Wang, Pengwei Ding, Zhijun Jiang, Changjun Zhou, Mengchu Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 200092 China Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ 07102 United States

ISBN: (纸本)9780769544632

The information technology has been recognized as one of the most important means to improve health care and curb its ever-increasing cost. However, existing efforts mainly focus on informatization of hospitals or medical institutions within organizations, and few are directly oriented to individuals. The strong demand for various health services from customers calls for the creation of powerful individual-oriented personalized health care service systems. Web service composition (WSC) and related technologies can greatly help one build such systems. This paper aims to present a newly developed platform called a Public-oriented Health care Information service Platform (PHISP) and several novel WSC techniques that are used to build it. Among them include WSC techniques that can well support branch and parallel structures. © 2011 IEEE.

关键词： Web services

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Model predictive control for HVAC systems - A review

Model predictive control for HVAC systems - A review

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2013 IEEE International Conference on Automation Science and Engineering, CASE 2013

作者： Kwadzogah, Roger Zhou, Mengchu Li, Sisi Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ 07013 United States Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 201804 China

ISBN: (纸本)9781479915156

The world faces an energy problem. Oil supply is gradually running out. Its use is polluting the planet with greenhouse gas. Most alternative energy sources also pose some environmental problems. Hence the efficient use of energy must be an integral part of any solution to them. Whenever possible, one must use advanced control engines and technologies to achieve the highest energy efficiency. In Heating Ventilation and Air Conditioning (HVAC) industry, much research has identified a number of energy-saving control methods. Derived from optimal control theory, Model Predictive Control (MPC) is one of them. This paper presents a comprehensive review of its applications to HVAC systems. © 2013 IEEE.

关键词： Model predictive control

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Construction-and-extraction based index for images retrieval

IEEJ Transactions on Electronics, Information and Systems

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IEEJ Transactions on Electronics, Information and systems 2011年第7期131卷 1377-1383页

作者： Zhang, Junqi Ni, Lina Tian, Chunqi Gao, Shangce Tang, Zheng Department of Computer Science and Technology Key Laboratory of Embedded System and Service Computing Tongji University Shanghai 200092 China College of Info Sci and Engi Shandong University of Science and Technology Qingdao 266510 China Department of Intellectual Information Systems Engineering University of Toyama Toyama-shi 930-8555 Japan

The past recent years have witnessed more and more applications on image retrieval. As searching a large image database is often costly, to improve the efficiency, high dimensional indexes may help. This paper proposes an adaptive hybrid index (AHI) supported by a construction-and-extraction technique to support image retrieval. First, the image clusters are further partitioned into sub-clusters to reduce the overlap between clusters and indexed into an iDistance index. Then, the query sampling statistically extracts some sub-cluster from the iDistance index into a sequential file. Finally, the users' queries are accurately returned by searching both the iDistance index and the sequential file. It's proved that the proposed AHI never performs worse than the sequential scan. Particularly, the experimental results demonstrate that the proposed index AHI is beneficial and achieves better performance than some exiting methods. It is about 2 times faster than iDistance, almost three times than Omni-sequential, more than four times faster than sequential file and more than 10 times faster than M-tree on the benchmark images set. The effect of the proposed AHI is also investigated by our implemented content based images retrieval system. © 2011 The Institute of Electrical Engineers of Japan.

关键词： Extraction

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An Effective Principal Curves Extraction Algorithm for Complex Distribution Dataset 1

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5th International Conference on Rough Set and Knowledge Technology (RSKT)

作者： Zhang, Hongyun Miao, Duoqian Sun, Lijun Ye, Ying The Key Laboratory of Embedded System and Service Computing Ministry of Education China Tongji University Shanghai 201804 China School of Electronic and Information Engineering Tongji University Shanghai 201804 China

ISBN: (数字)9783642162480

ISBN: (纸本)9783642162473

This paper proposes a new method for finding principal curves from complex distribution dataset. Motivated by solving the problem, which is that existing methods did not perform well on finding principal curve in complex distribution dataset with high curvature, high dispersion and self-intersecting, such as spiral-shaped curves, Firstly, rudimentary principal graph of data set is created based on the thinning algorithm, and then the contiguous vertices are merged. Finally the fitting-and-smoothing step introduced by Kegl is improved to optimize the principal graph, and Kegl's restructuring step is used to rectify imperfections of principal graph. Experimental results indicate the effectiveness of the proposed method on finding principal curves in complex distribution dataset.

关键词： Principal curves Complex distribution dataset Thinning algorithm Fitting-smoothing step Image skeletonization

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