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LBRM algorithm for rule extraction based on rough membership

2013 3rd International Symposium on Chemical Engineering and Material Properties, ISCEMP 2013

作者： Zhang, Xian Yong Miao, Duo Qian College of Mathematics and Software Science Sichuan Normal University Chengdu Sichuan 610068 China Department of Computer Science and Technology Tongji University Shanghai 201804 China The Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 201804 China

ISBN: (纸本)9783037858363

Rule extraction is a main goal for rough set theory. This paper mainly constructs a new algorithm (LBRM Algorithm) for rule extraction based on rough membership. The confidence principle is established based on rough membership. Thus, LBRM Algorithm is proposed by utilizing discretization and clearness strategies under the fuzzy environment, and is applied to both interval rules and general rules in fuzzy classification. LBRM Algorithm effectiveness is illustrated by a medical example. In particular, LBRM Algorithm integrates the confidence on both previous LBR Algorithm and fundamental rough membership, and has some improvements on rule confidence. © (2013) Trans Tech Publications, Switzerland.

关键词： Rough set theory

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A 3-transistor CMOS active pixel with in-pixel correlated double sampling

A 3-transistor CMOS active pixel with in-pixel correlated do...

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IEEE Conference on Electron Devices and Solid-State Circuits

作者： Shaohua Liu Lai Jiang Hang Yu Yan Li Dao ming xi Qingguo Xie Shenzhen City Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University Shenzhen China Shenzhen City Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University Shenzhen China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology HUST Wuhan China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan China

This paper presents a 3-transistor CMOS active pixel structure with in-pixel correlated double sampling. Designed in a standard 0.18 μm CMOS process, the structure effectively suppresses temporal noise and fixed pattern noise (FPN), thanks to the shared correlated double sampling circuit inside the pixel. Fill factor is also improved while maintaining pixel performance. Validation by Spectre simulator shows that the proposed structure suppresses 100 mV input offset to the microvolt range, and the pixel readout time is ~90 ns. The average power consumption of each pixel is 18 μW.

关键词： CMOS integrated circuits

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A FPGA-based real time QRS complex detection system using adaptive lifting scheme

A FPGA-based real time QRS complex detection system using ad...

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International Conference on Data Engineering and Internet Technology, DEIT 2011

作者： Yu, Hang Ma, Lixiao Wang, Ru Jiang, Lai Li, Yan Ji, Zhen Pingkun, Yan Fei, Wang College of Computer Science and Software Engineering Shenzhen University Shenzhen China Shenzhen City Key Laboratory of Embedded System Design Shenzhen University Shenzhen China OPTIMAL Xi'an Institute of Optics and Precision Mechanics Xi'an China IBM Almaden Research Center San Jose CA 95120 United States

ISBN: (纸本)9783642288067

This paper presents a real time QRS wave detection system implemented using the FPGA. Based on the Adaptive Lifting Scheme, the digitized ECG sequence is directly processed in the spatial domain, thus greatly simplifies the system design and reduces the memory usage. In order to synchronize the input ECG sampling data and the FPGA based ALS system, a pipeline architecture interface is proposed. It works as a buffer and the ECG data is processed in a real time manner. The system is implemented on the XUPV5-LX110T evaluation platform, and validated by using ECG samples from the MIT-BTH Arrhythmia Database. Experimental results show that the system achieves 98.688% detection accuracy, while the dynamic power consumption is only ~20mW. © 2013 Springer-Verlag GmbH.

关键词： Field programmable gate arrays (FPGA)

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A CMOS time-to-digital converter for multi-voltage threshold method in positron emission tomography

A CMOS time-to-digital converter for multi-voltage threshold...

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IEEE Conference on Electron Devices and Solid-State Circuits

作者： Yan Li Hang Yu Lai Jiang Zhen Ji Jun Zhu Ming Niu Peng Xiao Shenzhen City Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University Shenzhen China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9781467325240

Avoiding use of traditional high-speed analog-to digital converters (ADCs) and constant fraction discriminators, multi-voltage threshold (MVT) method is able to digitally sample positron emission tomography (PET) scintillation pulse with reasonable cost. As the key component of the MVT method, a time-to-digital convertor (TDC) with high resolution and large dynamic range is presented in this work. The TDC architecture uses a delay locked loop (DLL) to generate the fast clock edges from a 100 MHz clock, and a 32-stage Vernier delay lines (VDL) is used to achieve the 40pS timing resolution. The proposed TDC is designed using the standard 0.25 μm CMOS technology with 2.5V normal supply voltage. The power consumption of the TDC is ~70 mW.

关键词： CMOS integrated circuits Delays Image edge detection CMOS technology Pulse measurements Cities and towns

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A platoon of vehicles approaching an intersection: A testing platform for safe intersections

A platoon of vehicles approaching an intersection: A testing...

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2012 15th International IEEE Conference on Intelligent Transportation Systems, ITSC 2012

作者： Diab, Hilal Makhlouf, Ibtissem Ben Kowalewski, Stefan Computer Science Department XI Embedded Software Laboratory RWTH Aachen University Germany

ISBN: (纸本)9781467330640

Intersections are one of the most complex driving scenarios for an autonomous vehicle. When a platoon of autonomous vehicles following a leader approaches the intersection, the platoon should change its highway mode to other modes in order to cross the intersection safely. Therefore, the position, velocity and acceleration of the vehicles inside the platoon should be available. Furthermore, information about the position and velocity of other vehicles in the intersection area should be known too. The platoon controller should use all these information to decide which mode will be adopted. In fact, the platoon has to decide whether to stop, to pass or to split the platoon while crossing the intersection. This paper proposes a scaled testing platform of four electronically coupled vehicles equipped with a positioning system and an intersection management system. We tested different scenarios related to different crossing modes of the platoon. The experiments showed that we can change the platoon mode from a highway mode to an intersection drive efficiently. © 2012 IEEE.

关键词： Intelligent vehicle highway systems

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computer-aided Optimization of a 5.8 GHz ETC Receiver Front-end Design using Memetic Algorithm

Computer-aided Optimization of a 5.8 GHz ETC Receiver Front-...

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International Conference on Mechatronics and Applied Mechanics (ICMAM 2011)

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

ISBN: (纸本)9783037853801

Systematic level design and optimization of a Radio Frequency (RF) receiver is a multidimensional problem and it is usually an arduous and experience-based work because of the trade-off between various system parameters. In the mean while, co-operated with Genetic Algorithm (GA) and local search, Memetic Algorithm (MA) gradually becomes popular to solve multidimensional optimization problems, and it can be an efficient method for computer-aided design of RF receivers. In this paper, the MA method was adopted to aid the design of a 5.8 GHz RF receiver front-end. The transfer function for the signal-to-noise ratio at the front-end output (SNRout) was first derived based on the gain, noise figure and inter-modulation product of each individual circuit component, and the transfer function was then used as the required fitness function for the MA method. The efficacy of the proposed method was validated by ADS simulations.

关键词： computer-aided design RE front-end fitness function MA ADS simulation

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An offset-free 10 MHz limiting amplifier designed for a 5.8 GHz ETC receiver

An offset-free 10 MHz limiting amplifier designed for a 5.8 ...

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6th International ICST Conference on Wireless Internet, WICON 2011

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

ISBN: (纸本)9783642304927

Electronic tolling collection (ETC) system will be largely adopted in the next generation of Chinese highway network, and its operating frequency is specified to be 5.8 GHz. A limiting amplifier designed for the 5.8 GHz receiver of the ETC system is presented in this work. AC-coupled gain stage was realized to avoid additional offset cancellation mechanism. The trade-off between the small signal gain, number of stages, gain-bandwidth product, and power dissipation was studied by systematic analysis. Implemented using a standard CMOS 0.18 μm process, the simulation results show that the limiting amplifier achieves overall small signal gain of 81 dB, with 20 MHz bandwidth. © 2012 ICST Institute for computer science, Social Informatics and Telecommunications Engineering.

关键词： Bandwidth

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A tunable CMOS continuous-time filter designed for a 5.8 GHz ETC demodulator

A tunable CMOS continuous-time filter designed for a 5.8 GHz...

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6th International ICST Conference on Wireless Internet, WICON 2011

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

ISBN: (纸本)9783642304927

5.8 GHz is specified as the operating frequency of the electronic tolling collection (ETC) system in the new national highway network in China. A low power, robust radio frequency receiver is the key design challenge in such a system. A 3rd order butterworth low-pass filter with tunable pass-band designed for the ETC receiver was presented in this work. The design is based on a single operational amplifier in order to reduce the overall power consumption. The filter was implemented in standard CMOS 0.18 μm technology. Simulation shows that the design achieves a maximum 3-dB bandwidth of 2 MHz with 0 dB insertion loss, while the power consumption is only ∼200μW. © 2012 ICST Institute for computer science, Social Informatics and Telecommunications Engineering.

关键词： Operational amplifiers

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A Novel Wideband CPW-Fed 5.8GHz RFID Tag Antenna

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电子学报(英文版) 2012年第2期21卷 202-208页

作者： LI Huihui MOU Xuanqin JI Zhen YU Hang LI Yan Institute of Image Processing and Pattern Recognition Xi'an Jiaotong University Xi'an 710049 China College of Computer Science and Software Engineering Shenzhen University Shenzhen 518060 China Shenzhen Key Laboratory of Embedded System Design Shenzhen 518060 China

A novel wideband 5.8GHz CPW-fed an- tenna is presented for Radio frequency identification (RFID) tag. Four U-shaped and four L-shaped branches are used as additional resonators to achieve wideband operation. The proposed antenna was analyzed numeri- cally using the Method of moment (MOM) and the Fi- nite element method (FEM). With the antenna size lim- ited to 30 × 30mm2, the ?10dB bandwidth obtained by MOM is 3.235GHz (5.765～9GHz) and the ?9.5dB band- width obtained by FEM is 2.74GHz (5.32～8.06GHz), cor- responding to 55.7% and 47.2% of the center frequency 5.8GHz respectively. Moreover, the simulated results show that the proposed antenna has gain of more than 4.8dBi and the radiation pattern is nearly omnidirectional in the H-plane. The measured ?10dB bandwidth is 2.68GHz (5.63GHz～8.31GHz), 46.2% of the 5.8GHz frequency. Fur- thermore, there are three measured resonant frequencies at 1.34GHz, 3.23GHz and 5.8GHz with lower than ?10dB return loss respectively. The measurement result achieves a wideband RFID tag antenna performance and is in good agreement with the calculated results.

关键词： RFID标签天线尺寸共面波导宽带无线电频率识别有限元分析网络连接数值分析

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A 3rd order opamp-based tunable low-pass filter design for data demodulator of a 5.8 GHz ETC RF receiver

A 3rd order opamp-based tunable low-pass filter design for d...

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

作者： Li, Yan Yu, Hang Lin, Shengyue Jiang, Lai Wei, Rongchen 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

Electronic tolling collection (ETC) will be applied in the construction of the new national highway network in China and the Chinese standard has been released. A 5.8 GHz receiver satisfied the standard is one of the key components in the ETC system. In this work, a 3rd order low-pass filter was designed in a 0.18 μm CMOS process for the data demodulation block of the receiver. An operational amplifier was firstly realized and then a tunable low pass filter was designed based on the amplifier. Detailed simulation results are presented and the main design issues were discussed. © 2012 Springer science+Business Media B.V.

关键词： Operational amplifiers

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