检索结果-内蒙古大学图书馆

International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery, CyberC

作者： Chengbing Liu Xuejia Lai Department of Computer Science and Engineering Shanghai Jiao Tong University State Key Laboratory of ASIC & System Shanghai China

ISBN: (纸本)9781479913275

Random sequences are widely used in the field of computer science. In practice, random sequences are generated by pseudorandom number generators which are in fact deterministic algorithms. Statistical tests are used to check whether there are regularities in a sequence generated by a pseudorandom number generator. Currently there are many statistical tests available, which focus on different aspects of a sequence, but it remains open how these tests are correlated. In this paper, we select a set of statistical tests from different test suites, adapt them for testing short sequences if necessary, and evaluate these tests by calculating their conditional entropy, which reflects the coverage of each test in the whole test suite. Finally we propose a new test suite which has a larger coverage than the original test suite.

关键词： Entropy NIST Random sequences Generators Testing Correlation Probability

来源：评论

学校读者我要写书评

暂无评论

A 14-bit 200-MS/s time-interleaved ADC with sample-time error calibration

引用

Journal of Semiconductors 2012年第10期33卷 116-121页

作者：张逸文陈迟晓余北叶凡任俊彦 State Key Laboratory of ASIC&System Microelectronics Science and Technology Innovation Platform Fudan University

Sample-time error between channels degrades the resolution of time-interleaved analog-to-digital converters （TIADCs）.A calibration method implemented in mixed circuits with low complexity and fast convergence is proposed in this *** algorithm for detecting sample-time error is based on correlation and widely applied to wide-sense stationary input *** detected sample-time error is corrected by a voltage-controlled sampling *** experimental result of a 2-channel 200-MS/s 14-bit TIADC shows that the signal-to-noise and distortion ratio improves by 19.1 dB,and the spurious-free dynamic range improves by 34.6 dB for a 70.12-MHz input after *** calibration convergence time is about 20000 sampling intervals.

关键词： sample-time error analog-to-digital converter correlation calibration time-interleaved

来源：评论

学校读者我要写书评

暂无评论

Programmable architecture for quantum computing

引用

Physical Review A 2013年第2期88卷 022311-022311页

作者： Jialin Chen Lingli Wang Edoardo Charbon Bin Wang State Key Laboratory of ASIC & System Fudan University People's Republic of China Department of Electrical Engineering Fudan University People's Republic of China Department of Circuits and Systems TU Delft University Netherlands

A programmable architecture called “quantum FPGA (field-programmable gate array)” (QFPGA) is presented for quantum computing, which is a hybrid model combining the advantages of the qubus system and the measurement-based quantum computation. There are two kinds of buses in QFPGA, the local bus and the global bus, which generate the cluster states and general multiqubit rotations around the z axis, respectively. QFPGA consists of quantum logic blocks (QLBs) and quantum routing channels (QRCs). The QLB is used to generate a small quantum logic while the QRC is used to combine them properly for larger logic realization. Considering the error accumulating on the qubus, the small logic is the general two-qubit quantum gate. However, for the application such as n-qubit quantum Fourier transform, one QLB can be reconfigured for four-qubit quantum Fourier transform. Although this is an implementation-independent architecture, we still make a rough analysis of its performance based on the qubus system. In a word, QFPGA provides a general architecture to integrate different quantum computing models for efficient quantum logic construction.

关键词： FIELD programmable gate arrays QUANTUM computing HYBRID systems QUANTUM gates FOURIER transforms QUANTUM logic

来源：评论

学校读者我要写书评

暂无评论

A fourth-order bandwidth-reconfigurable delta-sigma modulator for audio applications

引用

Journal of Semiconductors 2012年第7期33卷 74-79页

作者：王俊乾杨海峰魏蕊许俊任俊彦 State Key Laboratory of ASIC&System Fudan University Microelectronics Science and Technology Innovation Platform Fudan University

A single loop fourth-order delta-sigma modulator is presented for audio applications. A reconfigurable mechanism is adopted for two bandwidth-based modes （8 kHz/16 kHz）. Manufactured in the SM1C 0.13μm CMOS mixed signal process, the chip consumes low power （153.6 μW） and occupies a core area of 0.98×0.46 mm2. The presented modulator achieves an 89.3 dB SNR and 90.2 dB dynamic range in 16 kHz mode, as well as a 90.2 dB SNR and 86 dB dynamic range in 8 kHz mode. The designed modulator shows a very competitive figure of merit among state-of-the-art low voltage modulators.

关键词： delta-sigma modulator feedforward architecture reconfiguration switched capacitor bootstrappedswitch

来源：评论

学校读者我要写书评

暂无评论

A novel fixed-complexity soft-output MIMO detector using parallel bidirectional scheme

A novel fixed-complexity soft-output MIMO detector using par...

引用

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

作者： Xiangyu Zhen Xiaofang Zhou Lian Huai Gerald E. Sobelman State Key Laboratory of ASIC & System Fudan University Shanghai China Department of Electrical and Computer Engineering University of Minnesota Minneapolis MN USA

ISBN: (纸本)9781479910267

This paper presents a novel detection algorithm for soft-output, multiple-input multiple-output (MIMO) systems. The algorithm obtains a list of candidates used to calculate likelihood information in parallel and it includes two stages for tree searching, where each stage corresponds to one direction of the path selection process. The simulation results indicate that the algorithm achieves better performance with lower complexity than a list-based fixed-complexity soft-output sphere decoder. Moreover, due to its parallel nature, it is well suited for hardware implementation.

关键词： MIMO Complexity theory Detectors Decoding Signal processing algorithms Vectors Antennas

来源：评论

学校读者我要写书评

暂无评论

Quantum FPGA architecture design

Quantum FPGA architecture design

引用

IEEE International Conference on Field-Programmable Technology (FPT)

作者： Jialin Chen Lingli Wang Bin Wang Department of Electrical Engineering Fudan University P. R. China State Key Laboratory of ASIC & System Fudan University P. R. China

A Quantum FPGA (QFPGA) architecture is presented for programmable quantum computing, which is a hybrid architecture combining the advantages of the measurement-based quantum computation and the qubus system. QFPGA consists of Quantum Logic Blocks (QLBs) and Quantum Routing Channels (QRCs). The QLB is used to realize a small quantum logic while the QRC is to combine them properly for larger logic realization. There are two types of buses in QFPGA, the local bus in the QLB and the global bus in the QRC, which are to generate the cluster states and general multiqubit rotations around the z axis respectively. However for some applications such as Grover's algorithm and n-qubit quantum Fourier transform, one QLB can be configured for four-qubit phase shift module and four-qubit quantum Fourier transform respectively.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Electrospun fluorescein/polymer composite nanofibers and their photoluminescent properties

引用

Chinese Physics B 2012年第9期21卷 514-519页

作者：张志华龙云泽尹红星孙彬郑杰张红娣纪新明顾长志 College of Physics Qingdao University State Key Laboratory of ASIC & System Department of Microelectronics Fudan University State Key Laboratory Cultivation Base of New Fiber Materials & Modern Textile Qingdao University Key Laboratory of Photonics Materials and Technology in Universities of Shandong (Qingdao University) Institute of Physics Chinese Academy of Sciences

Fluorescein/polyvinyl pyrrolidone （PVP） composite nanofibers with different fluorescein loadings （with a weight concentration of 0-5.0%） are fabricated via electrospinning. Morphologies, structures and photoluminescent （PL） prop- erties of these straight, helical or wavelike fibers are characterized by scanning electron microscopy （SEM）, fluorescence microscopy and a spectrophotometer. It is found that the maximum emission of the as-spun fluorescein/PVP fibers occurs at 510 nm. The PL intensity of the composite fiber increases with fluorescein concentration, then fluorescence quenching appears when the concentration reaches 1.67%. The mechanism of fluorescence quenching of fiuorescein is discussed. In addition, the composite fibers exhibit a much stronger PL intensity than fluorescein/PVP bulk film owing to larger specific surface area, which makes them promising materials for biomedical applications such as probes and sensors.

关键词： nanoflbers electrospinning fluorescence self-quenching

来源：评论

学校读者我要写书评

暂无评论

FMSSQP: An Efficient Global Optimization Tool for the Robust Design of Rail-to-Rail Op-Amp

FMSSQP: An Efficient Global Optimization Tool for the Robust...

引用

International Conference on asic

作者： Minghua Li Dian Zhou Sheng-Guo Wang Xuan Zeng Department of Electrical Engineering University of Texas at Dallas Richardson TX USA Department of Engineering Technology University of North Carolina at Charlotte NC USA State Key Laboratory of ASIC & System Fudan University China

This paper presents a robust design and global optimization methodology for Rail-to-Rail operational amplifier using a computer-aided design (CAD) tool called FMSSQP. Performance parameters are optimized while the impact of process variation is minimized. This design is implemented with 0.25-μm CMOS process. The result shows that transconductance (gm) variations at each process corners are less than 7%, circuit performance presented by a Figure of Merit (FOM) has a significant improvement compared with the published works.

关键词： CAD CMOS FMSSQP

来源：评论

学校读者我要写书评

暂无评论

A low-powerlow-voltage slew-rate enhancement circuit for two-stage operational amplifiers

引用

Journal of Semiconductors 2012年第9期33卷 131-136页

作者：束晨许俊叶凡任俊彦 State Key Laboratory of ASIC&System Fudan UniversityShanghai 201203China Microelectronics Science and Technology Innovation Platform Fudan UniversityShanghai 200433China

A novel circuit is presented in order to enhance the slew rate of two-stage operational amplifiers. The enhancer utilizes the class-AB input stage to improve current efficiency, while it works on an open loop with regard to the enhanced amplifier so that it has no effect on the stability of the amplifier. During the slewing period, the enhancer detects input differential voltage of the amplifier, and produces external enhancement currents for the amplifier, driving load capacitors to charge/discharge faster. Simulation results show that, fora large input step, the enhancerreduces settling time by nearly 50%. When the circuit is employed in a sample-and-hold circuit, it greatly improves the spur-free dynamic range by 44.6 dB and the total harmonic distortion by 43.9 dB. The proposed circuit is very suitable to operate under a low voltage （1.2 V or below） with a standby current of 200 μA.

关键词： slew-rate enhancement two-stage operational amplifier low-voltage operation low-powerconsump- tion

来源：评论

学校读者我要写书评

暂无评论

The effect of H2O2 and ammonia sulfate on the CMP of molybdenum

The effect of H2O2 and ammonia sulfate on the CMP of molybde...

引用

2012 International Conference on Planarization/CMP Technology, ICPT 2012

作者： Chen, Fei Zeng, Xu Xu, Jing-Bo Lu, Hai-Sheng Qu, Xin-Ping State key lab of ASIC and System Department of Microelectronics Fudan University Shanghai200433 China

ISBN: (纸本)9783800734528

The chemical mechanical polishing (CMP) of Molybdenum (Mo) using hydrogen peroxide based alkaline solution was investigated. The effects of pH value and the H2O2 concentration on the Mo polishing were studied. The static etching rate (SER) and polishing rate (PR) were much higher in the alkaline solution and H2O2 can greatly enhance both SER and PR of Mo. It is found that in the presence of AS, not only the PR of Mo increased, but also the ratio of PR to SER of Mo was increased. According to the electrochemical measurements and the X-ray photoelectron spectroscopy results, it is proposed that, AS can react with MoO42- to form soluble ammonium molybdate to promote the removal of Mo. © ICPT 2012 - International Conference on Planarization/CMP Technology, Proceedings. All rights reserved.

关键词： Hydrogen peroxide

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：