检索结果-内蒙古大学图书馆

Compressed sensing based channel estimation using group random unit pilot for OFDM systems in fast moving environment~

引用

High Technology Letters 2011年第2期17卷 113-118页

作者：方勇 Zhou Xiaoping Wang Min School of Communication and Information Engineering Key laboratory of Specialty Fiber Optics and Optical Access Networks Shanghai University Shanghai 200072 P. R. China Key Laboratory of Advanced Display and System Applications Shanghai 200072 P. R. China

A compressed sensing （CS） based channel estimation algorithm is proposed in the fast moving environment. A sparse basis expansion channel model in both time and frequency domain is *** are placed according to a novel random unit pilot matrix （RUPM） to measure the delay- Doppler sparse channel. The sparse channels are recovered by an extension group orthogonal matching pursuit （GOMP） algorithm, enjoying the diversity gain from multi-symbol processing. The relatively nonzero channel coefficients are estimated from a very limited number of pilots at a sampling rate significantly below the Nyquist rate. The simulation results show that the new channel estimator can provide a considerable performance improvement for the fast fading channels. Three significant reductions are achieved in the required number of pilots, memory requirements and computational complexity.

关键词： compressed sensing ( CS) channel estimation fast fading sparse channel basis expansion

来源：评论

学校读者我要写书评

暂无评论

Theoretical and experimental studies on microcavity organic light-emitting diodes with different emitters

引用

key Engineering Materials 2015年 645卷 1087-1092页

作者： Peng, Cuiyun Wei, Mengjie Huang, Rongjuan Guo, Kunping Jing, Yuelin Xu, Tao Wei, Bin School of Mechanical Engineering and Automation Shanghai University 149 Yanchang Road Shanghai200072 China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University 149 Yanchang Road Shanghai200072 China

We have theoretically and experimentally investigated the microcavity organic light-emitting diodes (MOLEDs) that enhanced the emission intensity and narrowed the spectra simultaneously. In this work, MOLEDs with the reflectivities of 70% and 90% have been successfully fabricated. Comparing to non-cavity OLEDs, the maximum forward electroluminescence intensity and the peak luminescence can be improved by 6.8 times and 2.2 times, respectively. The full width at half maximum could be sharply narrowed to 10 nm. The different configurations of MOLEDs with varied emitting layers have also been evaluated which fitted well with the experimental results. © 2015 Trans Tech Publications, Switzerland.

关键词： Reflection

来源：评论

学校读者我要写书评

暂无评论

Microstructures of ZnO electrospun nanofibers on AzO glass

Microstructures of ZnO electrospun nanofibers on AzO glass

引用

2014 International Conference on Materials Science and Engineering Technology, MSET 2014

作者： Lu, Xiu Zhen Chang, Yan Yan Xu, Ming Tao Peng, Bo Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center School of Mechatronic Engineering and Automation Shanghai University Shanghai 200072 China

ISBN: (纸本)9783038351023

ZnO electrospun nanofibers were considered to be potential novel materials in applications of photovoltaic devices and sensors. AZO glass was usually used in those devices as transparent electrodes. ZnO nanofibers on AZO glass were synthesized by electrospinning and calcination process. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy and photoluminescence (PL) spectrum was employed to investigate the morphology, structure and optical performance of ZnO nanofibers. Network structure composed of sheet ZnO was observed. Raman spectra and PL spectrum indicated the existence of defect states in the ZnO nanofibers. © (2014) Trans Tech Publications, Switzerland.

关键词： Glass

来源：评论

学校读者我要写书评

暂无评论

Alignment of electrospun nanofibers on folding foil

Alignment of electrospun nanofibers on folding foil

引用

2014 International Conference on Materials Science and Computational Engineering, ICMSCE 2014

作者： Lu, Xiu Zhen Peng, Bo Chang, Yan Yan Xu, Ming Tao Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center School of Mechatronic Engineering and Automation Shanghai University Shanghai 200072 China

ISBN: (纸本)9783038350996

Aligned array electrospun nanofibers are preferred and even necessary in most of applications. Most research reported was focus on the quality and uniform of directions of the array nanofibers. This paper describes a simple method for fabrication of large area aligned naonofibers. A zigzag shape collector was used in the electrospinning system. Alignment of nanofibers was realized by this system. Nanofibers collected on the 'peak' and 'valley' of the Aluminum foil were oriented. This system is a hybrid structure of parallel electrodes and disc collector with tip-like top. © (2014) Trans Tech Publications, Switzerland.

关键词： Alignment

来源：评论

学校读者我要写书评

暂无评论

Electro-optical performance of OLED with MEH-PPV fabricated by solution process 26

Electro-optical performance of OLED with MEH-PPV fabricated ...

引用

26th International display Workshops, IDW 2019

作者： Lee, Seok Je Yao, Fangnan Lee, Seung Il Jin, Cao Kim, Woo Young Moon, C.-B. Jhun, Chul Gyu Department of Electronic Display Engineering Hoseo University Asan31499 Korea Republic of Key Laboratory of Advanced Display and System Applications Shanghai University Ministry of Education Shanghai200072 China

ISBN: (纸本)9781713806301

We investigated the effects of solvents and concentration on the electro-optical performance of the organic light emitting diode (OLED) fabricated by the solution process. From the experimental results, we optimized the fabrication method of it and we figure out the underlying mechanism of carrier flow by the trap state. © 2019 ITE and SID.

关键词： Fabrication

来源：评论

学校读者我要写书评

暂无评论

Low subthreshold swing enables high synaptic weight gains based on channel-side gate dependent electrolyte transistors FET design 21

Low subthreshold swing enables high synaptic weight gains ba...

引用

21st China International Forum on Solid State Lighting and 10th International Forum on Wide Bandgap Semiconductors, SSLCHINA: IFWS 2024

作者： Gong, Qiming Wang, Fei Zheng, Hao Li, Mengjiao School of Microelectronics Shanghai University Shanghai200444 China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Shanghai200072 China

ISBN: (纸本)9798331541149

With the development of IoT and AI technologies, brain-like synaptic devices with precise weight modulation of synaptic plasticity and controllable preparation are of great significance for developing neuromorphic computing and intelligent sensing technologies. In this paper, we design a series of side-gate electrolyte transistors with varying gate-channel distances and systematically examine the structural design effect on synaptic weight modulation. A synaptic transistor device with an ultra-low subthreshold swing of 89.8 mV/dec has been successfully achieved by optimizing the gate-channel design. Additionally, Further characterizations of the short-term synaptic plasticity and long-term synaptic plasticity of synaptic transistors uncover the flexible modulation of the gate-channel distance-dependent synaptic weight gain behaviors, which span from as low as 6.1 to as high as 87.5 under 50 successive stimuli. The results of this work provide a reliable solution for the design and preparation of high-performance synaptic devices and lay the foundation for high-precision neural networks and intelligent sensing technologies. ©2024 IEEE.

关键词： Integrated circuit design

来源：评论

学校读者我要写书评

暂无评论

Simulation of Bonding and Reliability for Micro-LED Array Based on Copper Pillar Bump 21

Simulation of Bonding and Reliability for Micro-LED Array Ba...

引用

21st China International Forum on Solid State Lighting and 10th International Forum on Wide Bandgap Semiconductors, SSLCHINA: IFWS 2024

作者： Fu, Hao Yang, Zhu Meng, Xinhui Fan, Hong Lu, Xiuzhen Yin, Luqiao Zhang, Jianhua School of Microelectronics Shanghai University Shanghai201800 China Key Laboratory of Advanced Display and System Applications Shanghai University Ministry of Education Shanghai2000072 China

ISBN: (纸本)9798331541149

With the rapid development of automotive electronics and near-eye displays, more stringent requirements have appeared for the heterogeneous integration technology of Micro-LED. Copper pillar bumps, which offer enhanced electrical conductivity, thermal conductivity, and mechanical properties, can meet the demands for higher density and smaller size packaging in Micro-LED array applications. In Micro-LED system integration, bonding plays a critical role as the bonding conditions significantly influence the performance and reliability of Micro-LED. Consequently, it is essential to investigate the effects of bonding conditions on Micro-LED devices to ensure optimal performance and reliability of copper pillar bumps. A model with copper pillar bumps and Micro-LED chips was presented with a bonding simulation and parameter analysis performed in this paper. The finite element method was utilized to examine the thermal-mechanical coupling of one quarter of a 5×5 Micro-LED array model in this paper. The stress and deformation of the bumps during the bonding process and the effects of bonding conditions on the stress and deformation of the bumps was investigates. ©2024 IEEE.

关键词： bonding copper pillar bump Micro-LED orthogonal test

来源：评论

学校读者我要写书评

暂无评论

High-efficiency red phosphorescent emitter and its application in color-tunable white organic light-emitting diodes

High-efficiency red phosphorescent emitter and its applicati...

引用

作者： Zhang, Qi Guo, Kun Ping Zhang, Jing Wei, Bin School of Materials Science and Engineering Shanghai University Shanghai China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Shanghai China

We report high-efficiency red organic light-emitting diodes (OLEDs) and color-tunable white OLEDs using a novel red phosphorescent material. The transient PL decay measurement indicates that this red emitter exhibits a very-short lifetime, which is dependent on dopant concentration. Based on an optimized dopant concentration, we have fabricated a high-efficiency red electroluminescent device with a maximum external quantum efficiency (EQE) up to ηEQE= 22.6%. Furthermore, the color-tunable white organic light-emitting diodes by introducing this red dopant have been fabricated, in which CIE chromaticity coordinates follows the Planckian locus in warmer-color regions. Copyright © 2015 American Scientific Publishers All rights reserved.

关键词： Luminescent devices

来源：评论

学校读者我要写书评

暂无评论

Voltage regulator architecture used in automotive electronics

Voltage regulator architecture used in automotive electronic...

引用

International Conference on Measuring Technology and Mechatronics Automation

作者： Hu, Yueli Yang, Kai Jiang, Yuxi Key Laboratory of Advanced Display and System Applications Shanghai University Shanghai 200072 China School of Mechatronics Engineering and Automation Shanghai University Shanghai 200072 China

ISBN: (纸本)9780769542966

In modern electronic devices, linear regulator is increasingly important. Modules in a system may require different supply voltages, and the system always has only one supply. So a regulator will be needed. This paper describes a voltage regulator which can solve the problem above. Different types of vehicles has different battery voltage, the regulator described in this paper can convert the input voltage with a big range (10v-40v) to 3.3v. The output can supply other modules in a system of automotive electronics. The experimental results show that all main expectations are achieved. © 2011 IEEE.

关键词： Voltage regulators

来源：评论

学校读者我要写书评

暂无评论

Integration and verification case of IP-core based system on chip design

引用

Journal of Shanghai University(English Edition) 2010年第5期14卷 349-353页

作者：胡越黎周谌 School of Mechanical and Electronic Engineering and Automation Shanghai University Key Laboratory of Advanced Display and System Application

In this paper, the design and verification process of an automobile-engine-fan control system on chip （SoC） are introduced. The SoC system, SHU-MV08, reuses four new intellectual property （IP） cores and the design flow is accomplished with 0.35 btm chartered CMOS technology. Some special functions of IP cores, the detailed integration scheme of four IP cores, and the verification method of the entire SoC are presented. To settle the verification problems brought by analog IP cores, NanoSim based chip-level mixed-signal verification method is introduced. The verification time is greatly reduced and the first tape-out achieves success which proves the validity of our design.

关键词： system on chip (SoC) intellectual property (IP)-core integration verification pulse width modulation (PWM)- analog digital converter (ADC) linkage running

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：