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2010 International Conference on Computer Application and System Modeling, ICCASM 2010

作者： Xiaoyan, Yan Hong, Yu Key Laboratory of Instrumentation Science and Dynamic Measurement Ministry of Education North University of China Tai Yuan 030051 China Electronic and Information Engineering Institute Qiongzhou University Wuzhishem Hainan 572200 China

ISBN: (纸本)9781424472369

The Design and realization of decoding circuits for PCM telemetry signals is introduced in the paper. The system accomplished the mission of decoding high - speed difference PCM signal received, and recording data by frame. The key to the module of 422 is how to implement serial - parallel data conversion. And The key to the module of ±2. 5V is how to is achieve code - synchronization and frame - synchronization. The choice and analyze of parts of an apparatus are recommended. In the paper and The circuit has applied in one test platform successfully. It has the merit of stabilization and anti - jamming. © 2010 IEEE.

关键词： pulse code modulation

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PHASE-CHANGE TECHNOLOGY AND THE FUTURE OF MAIN MEMORY

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IEEE MICRO 2010年第1期30卷 131-141页

作者： Lee, Benjamin C. Zhou, Ping Yang, Jun Zhang, Youtao Zhao, Bo Ipek, Engin Mutlu, Onur Burger, Doug Stanford Univ VLSI Res Grp Stanford CA 94305 USA Univ Pittsburgh Dept Elect & Comp Engn Pittsburgh PA 15260 USA Univ Rochester Rochester NY 14627 USA Carnegie Mellon Univ Pittsburgh PA 15213 USA

Phase-change memory may enable continued scaling of main memories, but PCM has higher access latencies, incurs higher power costs, and wears out more quickly than dram this article discusses how to mitigate these limitations through buffer sizing, row caching. Write reduction, and wear leveling, to make PCM a viable dram alternative for scalable main memories.

关键词： DRAM PCM energy efficiency memory architecture phase-change memory technology scaling DRAM1 gene Memory architecture Phase transtormations pulse code modulation Phase change memory main memory Energy efficiency

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Model Parameters Estimation of PEM Fuel-Cell Systems using Genetic Algorithms

Model Parameters Estimation of PEM Fuel-Cell Systems using G...

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2010 IEEE International Conference on Industrial Technology (ICIT 2010)

作者： Pucci Marcello Zanchetta Pericle Wireless Communication Laboratory Posts and Telecommunications Institute of Technology Vietnam UK

ISBN: (纸本)9781424456956

This paper presents a novel Fuel Cell (FC) model parameters estimation method based on a Genetic Algorithms (GAs) heuristic optimization approach, a theoretical model and experimental measurements. The experimental behaviour of the FC is reproduced by an hardware emulator controlled to generate the FC I-V characteristic by means of a Ballard Mark V model. The close match between experimental measured results and those achieved by the same model with optimized unknown parameters shows that the use of the proposed strategy is an effective and consistent method for parameters identification and for correctly modelling the behaviour of the fuel cell system. It also proves the reliability of the designed hardware emulator. Significant improvements in terms of identification accuracy and reasonable optimization time are also achieved using the Search Space Reduction Method (SSRM).

关键词： hardware emulator Genetic Algorithm (GA) fuel cell power systems fuel batteries model parameters mucin 1 pulse code modulation Theoretical Models

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A Compact Model for Phase Change Memory Based on Carrier Transport Mechanism

A Compact Model for Phase Change Memory Based on Carrier Tra...

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2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology(第十届固态和集成电路技术国际会议 ICSICT-2010)

作者： Laidong Wang Yiqun Wei Wei Wang Ling Wang Xinnan Lin Jin He The Key Laboratory of Integrated Microsystems School of Computer & Information Engineering Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China Peking University Shenzhen SOC Key Laboratory PKU HKUST Shenzhen Institute Hi-Tech Industrial Park South Shenzhen 518057 P.R. China

ISBN: (纸本)9781424457977

In this paper, a compact model for phase change memory (PCM) based on carrier transport mechanism is presented. In this model, the set and reset resistances of the cell are calculated through the traditional transport theory and the hopping transport theory respectively, coupling with the temperature and the phase-change kinetics calculation. With the temperature-sensing and storage module embeded, this model is effective in partial crystallization condition. The I-V performance and the R-I status are calibrated by experimental data and numerical simulation. This model is implemented in Verilog-A, making it easily applied to many circuit level simulation tools and useful to PCM design.

关键词： Phase change memory transport theory accessor Carrier transport Compact Compact Pattern pulse code modulation diffusion model set

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Recent Progress of Phase Change Memory (PCM) and Resistive Switching Random Access Memory (RRAM)

Recent Progress of Phase Change Memory (PCM) and Resistive S...

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2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology(第十届固态和集成电路技术国际会议 ICSICT-2010)

作者： Yi Wu Sang Bum Kim Shimeng Yu Jiale Liang H.-S. Philip Wong Rakesh Gnana David Jeyasingh Byoungil Lee Marissa A. Caldwell Dept. of Electrical Engineering and Center for Integrated Systems Stanford University Stanford CA Dept. of Chemistry and Center for Integrated Systems Stanford University Stanford CA 94305 USA

ISBN: (纸本)9781424457977

Conventional memories such as SRAM, DRAM, and FLASH have set a very high cost/performance standard. Yet, recent advances in new materials, device technologies and circuits have made many emerging memories attractive candidates for a new generation of memories. This paper gives an overview of our recent research work on phase change memory (PCM) and metal oxide resistive switching memory (RRAM).

关键词： Research work Phase change memory redundant random access memory Flashing pulse code modulation metal oxides random access machine Memory Electric circuits

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Thermal physical model for Ge2Sb2Te5 phase change memory in electrical memory device

Thermal physical model for Ge2Sb2Te5 phase change memory in ...

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2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology(第十届固态和集成电路技术国际会议 ICSICT-2010)

作者： Daolin Cai Zhitang Song Houpeng Chen State Key Laboratory of Functional Materials for Informatics Laboratory of Nanotechnology Shanghai Institute of Micro-system and Information Technology Chinese Academy of Sciences Shanghai 200050 People's Republic of China

ISBN: (纸本)9781424457977

In order to calculate the temperature of the phase change memory (PCM) cell, a thermal physical model of the PCM device having Ge2Sb2Te5 (GST) layer has been proposed and demonstrated. By calculating and comparing with the Joule heating of the PCM cell at different programming state between based on the voltage - current curves and based on the formula to calculate temperature, it is found that the Joule heating increases with the amorphous fraction increasing.

关键词： Phase change memory Memory devices Resistance heating disk prosthesis physical models pulse code modulation Temperature current curve formula

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Control Strategies for a Fuel-Cell Hybrid Tramway

Control Strategies for a Fuel-Cell Hybrid Tramway

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2010 IEEE International Conference on Industrial Technology (ICIT 2010)

作者： P. Garcia J. Perez L. M. Fernandez C.A. Garcia F. Jurado Department of Electrical Engineering University of Cadiz EPS Algeciras Cadiz Spain Department of Electrical Engineering University of Jaen EPS Linares Jaen Spain

ISBN: (纸本)9781424456956

This paper compares two control configurations for a fuel cell (FC)-battery powered hybrid system for the Metro-Centro tramway (800 kW) from Seville, Spain. Besides, modeling of each components is briefly presented. These models have been implemented in MATLAB/SIMULINK environment. Polymer Electrolyte Membrane (PEM) FC model used in the simulations realized is a simplification of Jay T. Pukrushpan et al. model. The model characteristics are selected from a Nuvera 127 kW PEM FC. Four of this PEM FC's are the primary energy source and a group of Ni-MH battery supplements the output of the FC during tramway acceleration or whenever else needed and provides regenerative braking energy recapture capability. Finally, the simulation results for both control configurations (States and Cascade Control Strategies) are presented for the real driving cycle of the tramway. The results demonstrate the hybrid system capability to meet appropriate driving cycle in both caseshese instructions give you basic guidelines for preparing camera-ready papers for conference proceedings.

关键词： Configuration control hybrid systems fuel batteries control strategy nickel hydrogen batteries mucin 1 pulse code modulation Energy sources Driving cycle simplification

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Preparation and properties of microencapsulated PCMs for textile by the method of microemulsion

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Spring Conference of the Fiber-Society

作者： Zhang Jin Zou Liming Tan Ying Xu Su Zhong Lei Donghua Univ State Key Lab Modificat Synth Fibers & Polymer Ma Shanghai 200051 Peoples R China

ISBN: (纸本)9787506456357

@@PCMs could be applied to the storge of energy and temperature control widely, owing to it can release and storage a large amount of potential thermal energy in phase change[1][2].After decades of development, PCMs has attracted wide attention on the field of thermal conduc-tivity and thermal cycling,textile,foam plastic, coating and composite materials[3][4].But some disadvantages of PCMs limit more wider use such as leakage, phase separation, erosion and so on. Microencapsulation technology and application have promoted the development of phase change materials. Microencapsulated PCMs based on microemulsion technology, not only resolve the shortcoming of PCMs, but also broaden the application domains of PCMs.

关键词： Microemulsions pulse code modulation Textile fabrics Plastic coatings Phase change materials

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Improved error performance in SOQPSK modulation using a ternary symbol encoder

Improved error performance in SOQPSK modulation using a tern...

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45th Annual International Telemetering Conference and Technical Exhibition - Disruptive Technologies and Their Impact on Telemetry, ITC/USA 2009

作者： Counsil, David T. Punnoose, Ratish J. Sandia National Laboratories P.O. Box 969 Livermore CA 94551 United States

Telemetry transmissions have been evolving over the recent years from PCM/FM to other constant envelope modulation schemes such as SOQPSK and multi-h CPM. These newer modulations schemes have better spectral efficiency but tend to have worse error performance than optimally detected PCM/FM. We present a new ternary symbol encoder to replace the existing differential encoder and pre-coder for SOQPSK. This improves error performance while minimally affecting the spectral properties. The "reach" of the new ternary code length is not much longer than current symbol encoder, so there will not be a significant increase in synchronization time in the receiver. We provide simulation results showing the increased performance. Along the way, we also provide a simplified view of the current SOQPSK differential encoder and pre-coder. © International Foundation for Telemetering, 2009.

关键词： pulse code modulation

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Achieving Multiple Resistance States in Phase-Change Memory Cell

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JAPANESE JOURNAL OF APPLIED PHYSICS 2009年第7期48卷 074501-074501页

作者： Wang, Ke Han, Xiao Dong Zhang, Ze Wu, Liang Cai Liu, Bo Song, Zhi Tang Feng, Song Lin Beijing Univ Technol Inst Microstruct & Property Adv Mat Beijing 100022 Peoples R China Chinese Acad Sci Lab Nanotechnol Shanghai Inst Microsyst & Informat Technol Shanghai 200050 Peoples R China

Ge2Sb2Te5 (GST)-based phase-change random access memory (PCM) cells were successfully fabricated by a standard 0.18 mu m complementary metal-oxide-semiconductor (CMOS) process. The bottom electrode contacts (BECs) of the PCM cells are tungsten heaters with hollow columns filled with SiO2 and Ge. An approach of multiple resistance states (MRSs) was demonstrated. It was revealed and simulated that the observed MRS, in fact, derives from the hollow tungsten BEC architecture. The variance of electrical resistance between the MRSs can be as high as two orders. With a proposed model, our research demonstrated a simple but applicable concept of building a more stable multiple storage (MS) PCM cell by simply tuning the contact area between the BEC and GST. (C) 2009 The Japan Society of Applied Physics

关键词： TRANSITION Electrical resistance CONTACT AREA multiples Cells Phase change memory Phase change random access memory Countries (nations) immunocytes pulse code modulation

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