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Norchip

作者： Lebo Wang Youde Hu Lirong Zheng Jue Shen Zhuo Zou State Key Lab of ASIC System Fudan University Shanghai China Ipack Vinn Excellence Center Royal Institute of Technology (KTH) Sweden

ISBN: (纸本)9781479954438

This paper presents Software Defined Radio (SDR) in RFID sensing applications focusing on wideband mixer and VGA design. The wideband receiver can support UHF, UWB band for commonly used long-range RFID standards ranging from 400MHz to 6GHz. The wideband mixer is of folded topology with switching biased technique, achieving a maximum 11.5dB conversion gain with only an 8dB DSB noise figure and 16dB flicker noise at 10kHz. The VGA utilizes a four-stage modified Cherry-Hopper amplifier, along with DC-offset cancelling and common-mode feedback. A maximum gain of 67dB can be achieved with more than 600MHz of bandwidth. The design is implemented in a 65nm CMOS process. The total power consumption of the mixer and the VGA is 7mW by simulation. The die area of these two blocks is 0.045mm 2 .

关键词： Mixers Wideband Radiofrequency identification Gain Switches Radio frequency

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A low complexity floating-point complex multiplier with a three-term dot-product unit

A low complexity floating-point complex multiplier with a th...

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IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC)

作者： Sangho Yun Gerald. E. Sobelman Xiaofang Zhou Department of Electrical and Computer Engineering University of Minnesota Minneapolis MN USA State Key Lab of ASIC and System Fudan University Shanghai China

In this paper, we propose a new design for a low complexity floating-point complex multiplier for DSP applications. The design uses a three-term dot-product unit that reduces the overlapped portion found in a previous two-term fused dot-product unit. Comparisons with a primitive fused adder-subtract unit, a dot-product unit and combinations of these primitive units have also been performed. The synthesis results using a 45-nm standard-cell library shows a 16% reduction in area and a 6% reduction in power consumption as compared to a previous complex multiplier using two fused dot-product units.

关键词： Computer integrated manufacturing Mathematical model Complexity theory Computers Power demand Hardware Computational modeling

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Acceleration of Naive-Bayes algorithm on multicore processor for massive text classification

Acceleration of Naive-Bayes algorithm on multicore processor...

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International Symposium on Integrated Circuits (ISIC)

作者： Lijun Zhou Zhiyi Yu Jie Lin Shikai Zhu Weijing Shi Haijie Zhou Kunpeng Song Xiaoyang Zeng State-Key Lab of ASIC and System Fudan University Shanghai China Shannon Laboratory Huawei Technologies Co. Ltd Shenzhen China

ISBN: (纸本)9781479948321

Naive-Bayes algorithm acts as a key baseline of massive text classification, which is widely used in fields of detecting spam, online marketing and so on. Multicore processor is a suitable platform to implement Naive-Bayes because of its flexibility, high performance, and energy-efficiency. This paper proposes a new hopscotch hash scheme to improve the performance of data storing and indexing of Naive-Bayes algorithm, and presents a software implementation of Naive-Bayes text classification mapped in Topo-MapReduce model on a multicore processor with circuit switching and packet switching. Experimental results show that the improved hopscotch hash speeds up by 33% at maximum compared to the original hash, and the proposed Topo-MapReduce speeds up the Naive-Bayes algorithm by 29% at maximum compared to the original MapReduce.

关键词： Multicore processing Indexing Computational modeling Acceleration Data models

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An ultra-low quiescent current output capacitor-less low-dropout regulator with a novel slew-rate-enhanced circuit

An ultra-low quiescent current output capacitor-less low-dro...

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IEEE International Workshop on Radio-Frequency Integration Technology (RFIT)

作者： Yang Chen Yizhong Yang Longjie Du Guangjun Xie Xin Cheng Maoxiang Yi School of Electronic Science and Applied Physics Hefei University of Technology Hefei China State Key Lab of ASIC and System Fudan University Shanghai China

This paper presents an ultra-low quiescent current output capacitor-less Low-dropout (LDO) regulator with a novel slew-rate-enhanced (SRE) circuit. By adopting the novel SRE circuit, the transient response of the regulator was improved apparently. Simulation results show that, the LDO regulator consumes a quiescent current of only 930nA at steady state.

关键词： Regulators Transient response Stability analysis Logic gates Circuit stability Simulation Transient analysis

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Quantum wireless multihop communication based on arbitrary Bell pairs and teleportation

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Physical Review A 2014年第2期89卷 022329-022329页

作者： Kan Wang Xu-Tao Yu Sheng-Li Lu Yan-Xiao Gong National ASIC System Engineering Research Center Southeast University Nanjing 210096 China State Key Lab. of Millimeter Waves Southeast University Nanjing 210096 China Department of Physics Southeast University Nanjing 211189 China

Communication in quantum wireless multihop networks is useful in global quantum networks. We propose a scheme for faithful quantum communication in quantum wireless multihop networks, by performing quantum teleportation between two distant nodes which do not initially share entanglement with each other. The required entanglement among intermediate nodes is established through entanglement swapping based on arbitrary types of Bell pairs. All the measurement outcomes and the types of Bell pairs are sent to the destination node independently. The initial quantum state can be finally recovered by corresponding local operations. Our scheme can reduce end-to-end communication delay by using simultaneous measurements in contrast to the scheme based on sequential entanglement swapping.

关键词： QUANTUM communication WIRELESS communication systems QUANTUM teleportation QUANTUM networks (Optics) WIRELESS sensor nodes QUANTUM measurement

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Analytic model for subthreshold channel potential and threshold voltage of the Schottky-barrier surrounding-gate MOSFETS

Analytic model for subthreshold channel potential and thresh...

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International Conference on Solid-state and Integrated Circuit Technology

作者： Guang-Xi Hu Shu-Yan Hu Pei-Cheng Li Ran Liu Ling-Li Wang Xing Zhou ASIC and System State Key Lab Fudan University Shanghai P. R. China School of Electrical & Electronic Engineering Nanyang Technological University Singapore

ISBN: (纸本)9781479932849

The threshold voltage, V th , of a surrounding-gate (SG) Schottky-barrier (SB) metal-oxide-semiconductor field-effect transistor (MOSFET) is investigated. An analytical expression for surface potential is obtained by solving Poisson's equation. Based on the potential model, an analytical expression for V th is achieved, with quantum mechanical effects and SB lowering effect included. It is found that V th will be raised by quantum mechanical effects and lowered by SB lowering effect. It is also found that, the influence of channel length on V th is complicated; when the channel length is 20 nm, V th is the smallest.

关键词： MOSFET Electric potential Semiconductor device modeling Silicon Analytical models Quantum mechanics Logic gates

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Properties of directly electroplated copper on CoMo alloy diffusion barrier

Properties of directly electroplated copper on CoMo alloy di...

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International Conference on Solid-state and Integrated Circuit Technology

作者： Xu Wang Hyunsuk Kim Xin-Ping Qu State Key lab of ASIC and System Fudan University Shanghai China Semiconductor R&D center Samsung Electronics Co. LTD Hwasung Korea

ISBN: (纸本)9781479932849

The properties of directly electroplated Cu on CoMo alloy diffusion barrier were analyzed by FPP, XRD and SEM. Comparison was made between electroplated Cu on CoMo with and without a seed layer. Also, the self-annealing behaviors of both direct electroplated Cu on CoMo and Cu/CoMo were investigated further. Due to the self-annealing process, the defects of directly electroplated Cu on CoMo are recovered resulting in a less resistance difference value between electrochemical deposited (ECD) Cu on CoMo and ECD Cu on Cu/CoMo.

关键词： Abstracts Hafnium X-ray scattering Films Resistance

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A novel Ant Colony Algorithm using available path information for PLC networking

A novel Ant Colony Algorithm using available path informatio...

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IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC)

作者： Yu Zeng Xiaofang Zhou Linshan Zhang State Key Lab. of ASIC & System Fudan University Shanghai China YunNan Electric Power Test & Research Insitute Group Co. Ltd Kunming China

Power Line Carrier communication is a fast-developing technology and finds many applications, such as automatic meter-reading system. However, as the one-hop communication distance is limited due to the channel attenuation and strong line noises, relay technology is necessary for PLC networking. Among all the relay methods, Ant Colony Algorithm is a promising one but still with some shortcomings, such as the long searching time and the inclination to find a local optimal solution. This article provided a simple but effective algorithm to make use of the available path information to speed up the searching process, and reach the global optimal path. Experiment results show the presented algorithm can improve convergence time by 13.5%.

关键词： Topology Convergence Routing Clustering algorithms Heuristic algorithms Relays Genetic algorithms

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Novel 2T gain cell with enhanced retention time for embedded DRAM application

Novel 2T gain cell with enhanced retention time for embedded...

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International Conference on Solid-state and Integrated Circuit Technology

作者： Hui Li Yinyin Lin Ryan Huang Lijun Song Qingtian Zou Jingang Wu ASIC and System State Key Lab Fudan University Shanghai P.R. China Technology Research and Development Center Semiconductor Manufacturing International Corp. Shanghai China

ISBN: (纸本)9781479932849

A high performance 2T gain cell memory device is demonstrated for the first time in 0.13μm CMOS technology. A novel asymmetric source and drain doping profile combined with high threshold voltage (Vt) scheme for the write transistor is introduced to reduce the cell leakage and then improve data retention characteristics. Experimental results show a data retention of 698μs @85°C with 99.9% yield, which proves that the proposed 2T gain cell may be a very promising candidate for low cost and high density eDRAM application.

关键词： Logic gates Abstracts CMOS integrated circuits CMOS technology Fabrication Doping Junctions

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A novel image green enhancement method based on luminance and hue

A novel image green enhancement method based on luminance an...

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IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC)

作者： Man Fan Ke Liu Jun Yu Lei Shen Yuan Yao Chenyu Wang Shanghai Fudan Microelectronics Group Co. Ltd. Shanghai P.R. China State Key Lab of ASIC & System Fudan University Shanghai P.R. China

This paper proposes an image green enhancement method based on luminance and hue. In the current algorithm, there are two main issues, i.e., the presence of over-saturation and color deviation, which can not satisfy people's demands for stronger green enhancement. To solve these problems, the correct mathematical model about luminance on chrominance constraint relations is proposed and an appropriate product factor list is obtained. The MATlab simulation images show that the proposed method effectively enhances the green color and at the same time avoid the problems of over-saturation and color deviation.

关键词： Image color analysis Equations Mathematical model Vectors MATlab Color Hardware

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