第三代移动通信中的智能天线技术

介绍了智能天线的基本概念、关键技术，简要分析了智能天线对3G移动通信系统的性能改善及优点。     

一种用于CDMA系统的新型智能天线

本文提出了一种用于CDMA系统的新型智能天线.这种智能天线采用近似等旁瓣方向图,加权矢量无需预先测量、校正,可由累加、平均算法获得,具有良好的工程实现性.本文提出的智能天线与自适应智能天线具有相似的扩容能力,但它无需迭代、响应速度快、鲁棒性也更好.     

MIMO天线3种技术及应用场景分析

简要介绍了MIMO系统采用的3种技术,即空时编码、空间复用和智能天线,分析了这3种技术的不同应用场景,特别指出密集市区不能使用智能天线,同时指出MIMO覆盖区内信号场强应在-75～-65 dBm之间,不强不弱的信号才能实现数据的高阶调制     

智能天线技术在3G通信系统中的应用

本文对智能天线技术的原理、特点作了简要介绍，对于智能天线应用于CDMA系统中的时空信号联合处理及其在3G中的应用进行了论述。     

TD-SCDMA智能天线系统原理、实现及现场测试方案浅析(上)

简要介绍了智能天线原理在TD-SCDMA系统中的实现情况,并结合智能天线物理特性,TD-SCDMA智能天线相关仿真数据和几个典型现场测试用例,对TD-SCDMA系统智能天线技术的原理、实现及功能验证进行了分析.     

智能天线自适应算法研究

智能天线是第三代移动通信系统的关键技术之一。本文在简要介绍智能天线的基本原理和系统组成的基础上,详细论述了智能天线的自适应算法和技术优势。     

第三代移动通信的关键技术--智能天线

智能天线是第三代移动通信系统的主要关键技术之一。本文在简要介绍智能天线的基本原理、系统组成的基础上,详细论述了智能天线的自适应算法和技术优势。     

第三代移动通信系统TD-SCDMA中的智能天线技术

简要介绍了由我国提交并被国际电联接受的第三代移动通信标准TD-SCDMA系统及其特点。详细阐述了智能天线的概念、自适应算法和波束形成方法。深入分析了智能天线在TD-SCDMA系统中的应用以及使用他的有关问题，最后对智能天线的应用前景进行了展望。     

无线通信中软件无线电结构的智能天线技术

智能天线技术和软件无线电技术均为近年发展起来的现代通信技术 ,其在通信领域的应用前景广阔。文中简要介绍了智能天线技术和软件无线电技术 ,并讨论了智能天线技术的加权矢量的几种计算方法以及结合软件无线电技术的智能天线技术在无线通信的应用     

第三代移动通信系统的抗干扰关键技术

智能天线,RAKE以及联合检测是第三代移动通信系统采用的抗干扰关键技术,这些技术用于减少CDMA码分多址系统的各种干扰,提高系统容量。本文对这几种技术进行了介绍,在此基础上,分别就智能天线结合RAKE(2D-RAKE),智能天线结合联合检测(SA JD)的性能在特定的系统下进行仿真。最后,本文还简要介绍了移动通信系统的一些抗干扰的新技术和新思路。     

Technology innovation and process integrations for sub-100nm gate patterning

This paper presents a brief overview of the Applied Centura(R)DPS(R)system,configured with silicon etch DPS Ⅱ chamber, with emphasis on discussing tuning capability for CD uniformity control. It also presents the studies of etch process chemistry and film integration impact for an overall successful gate patterning development. Discussions will focus on resolutions to key issues, such as CD uniformity, line-edge roughness, and multilayer film etching integration.     

White organic light-emitting devices based on fac tris（2- phenylpyridine） iridium sensitized 5,6,11,12-tetraphenylnap -hthacene

We have fabricated the white organic light-emitting devices （WOLEDs） based on 4,4＇ -bis（2,2 -diphenyl vinyl）-1,1＇ - biphenyl （DPVBi） and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene （rubrene）. The device structure is ITO/2T-NATA （20 nm）/NPBX （20 nm）/CBP： x%Ir（ppy）3：0.5% rubrene （8 nm）/NPBX （5 nm）/DPVBi （30 nm）/Alq（30 nm）/LiF（0.5 nm）/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris （2-phenylpyridine） iridium [Ir（ppy）3], acts as a yellow light-emitting layer, and N,N＇ -bis- （1-naphthyl）- N,N＇ -diphenyl -1, 1＇ -biphenyl-4,4＇ -diamine （NPBX） acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir （PPY）3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V.     

Complete approach to automatic identification and subpixel center location for ellipse feature

To meet the need of automatic image features extraction with high precision in visual inspection, a complete approach to automatic identification and sub-pixel center location for similar-ellipse feature is proposed. In the method, the feature area is identified automatically based on the edge attribute, and the sub-pixel center location is accomplished with the leastsquare algorithm. It shows that the method is valid, practical, and has high precision by experiment. Meanwhile this method can meet the need of instrumentation of visual inspection because of easy realization and without man-machine interaction.     

小角度扩展相关性近似算法分析

本论文提出一种在多天线MIMO信道相关性建模中小角度扩展近似理论算法,并应用于分析MIMO系统性能。分析中分别对三种不同角能量分布情况下的空间相关性研发快速近似计算法,并同时提出双模(Bi-Modal)角能量分布情况下的近似运算。通过分析这些新方法的近似效率,可以得到计算简单、复杂度低、而且符合实际的MIMO相关信道矩阵,对系统级的快速高效计算法的研究和系统级的评估以及误差分析具有重要的意义。     

A Versatile Mixed-Signal Pin Approach for Cost-Effective Test of Automotive ICs

Integrated circuits (ICs) intended for increasingly sophisticated automotive applications bring unique test demands. Advanced ICs for applications such as highly integrated automatic braking system (ABS) and airbag controllers combine high voltage digital channels, significant VI demands and precise timing capability. Along with continued missioncritical reliability concerns, the trend toward higher voltage operation and increased device integration requires specialized test capabilities able to extend across the wide operating ranges found in automotive applications. Among these capabilities, automotive test requirements increasingly dictate a need for a cost-effective versatile mixed-signal pin electronics with very high data rates reaching up to 50MHz with a voltage swing of-2 V to +28 V.     

Optical vibration and deviation measurement of rotating machine parts

It is of interest to get appropriate information about the dynamic behaviour of rotating machinery parts in service. This paper presents an approach of optical vibration and deviation measurement of such parts. Essential of this method is an image derotator combined with a high speed camera or a laser doppler vibrometer （LDV）.     

INTEGRATION OF OPTICAL AND WIRELESS NETWORKS

正For a long time,optical and wireless systems/net-works are developed in separate communities witha few attempts for in-depth convergence.In fact,it prom-ises many advantages to combine the optical and wire-less technologies in the levels of systems and networks.Recently,both academia and industry have made manyefforts to enter a new phase of development to take op-tical and wireless systems as fully integrated networks.To provide high bandwidth and reliable service for bothfixed and mobile users,a well-designed network must     

社长序言（英文）

正Happy New Year!As we step into a new year,we take a look back at the key feature topics covered in China Communications over the past 12 months and set out our expecta-     

云计算专题（英文）

正Cloud computing is a novel computing paradigm that utilizes remote cloud resources to achieve a high-performance computation.Cloud provides infrastructure,platform and software as different on-demand services.China has made remarkable progress in cloudbased products and operating system technology.The government,enterprises and research institutions are all active in the development of cloud computing-related projects.Despite the progress,many important problems     

Call for Papers—Feature Topic,Vol.12,No.3,2015

正Smart Grid Communications The electric power industry is undergoing profound changes as the industry aims to capture the promise of a smart grid for a sustainable energy future.Enabled by the advanced sensing devices such as Phasor Measurement Units(PMUs),increasingly powerful