宁波GSM系统LAC调整方案

宁波ＧＳＭ系统ＬＡＣ状况 目前宁波ＧＳＭ系统共有ＬＡＣ区２２个,每个ＢＳＣ分配一个ＬＡＣ（除市区ＢＳＣ２３,ＢＳＣ２４外）,这样,某些ＢＳＣ的Ｌｏｃａｔｉｏｎ－Ｕｐｄａｔｅ占ＯＫ－ＡＣＣ－ＰＲＯＣ的比例（后称ＬＵ－ＲＡＴＥ）相当高,如余姚ＢＳＣ８,其ＬＵ－ＲＡＴＥ高达７９．４２％,其ＳＤＣＣＨ负荷相当重,且已导致ＳＤＣＣＨ拥塞,具体每个ＢＳＣ的ＬＵ次数,ＬＵ－ＲＡＴＥＰＡＧＥ－ＲＥＱＵＥＳＴＳ／ＰＡＧＥ－ＲＥＳＰＯＮＳＥ,ＰＡＧＥＳ－ＰＥＲ－ＳＥＣＯＮＤ,ＳＤ－ＣＯＮＧＥＳＴＩＯＮ－ＲＡＴＥ,…     

消除E10交换机SMM站故障文件超量告警的方法

消除Ｅ１０交换机ＳＭＭ站故障文件超量告警的方法天津市市内电话局申路在ＡＬＣＡＴＥＬ１０００Ｅ１０型ＯＣＢ２８３交换机中，ＳＭＭ站常出现“ＭＡＸＴＨＥＲＥＳＨＯＬＤ－ＯＦＡ”告警，由于ＳＭＭ站是ＯＣＢ２８３交换机的核心，所以我们对其出现的告警十分重视，...     

PROTEL多层印制板自动布线软件包

ＰＲＯＴＥＬ多层印制板自动布线软件包邢观锋电子爱好者完成电路设计后往往苦恼于繁琐而枯燥的将电路原理图转化为印制电路板的设计过程。因此印制板的计算机辅助设计（ＣＡＤ）软件包应运而生，从ＳＭＡＲＴＷＯＲＫ、ＴＡＮＧＯ到ＰＲＯＴＥＬ、ＯＲＣＡＤ，各种ＣＡＤ...     

ADSL的嵌入操作信道（EOC）的功能扩展

主要介绍ＡＤＳＬ原有协议中关嵌入操作信道ＥＯＣ定义的局限性,并简要说明独立数据传送的概念以及在后续的ＡＤＳＬ的协议版本中对ＥＯＣ的功能扩展及改进措施。     

SDH DCC管理信息通信的协议栈

本文介绍ＳＤＨＤＣＣ协议栈各层的主要内容和特征，特别是面向目标的应用层ＣＭＩＳＥ、ＲＯＳＥ、ＡＣＳＥ，网络层的路由参数以及数据键路层的ＬＡＰＤ。并给出了各层ＰＤＵ间的对应关系。最后举出两种网络单元中协议栈配置的实例。     

ORACLE数据库性能优化

ＯＲＡＣＬＥＲＤＢＭＳ已在各行业得到了广泛的应用和关注。本文对ＯＲＡＣＬＥＲＤＢＭＳＶ６．０的运行机制进行了分析，并对数据库规范化设计、数据参数调整、ＳＱＬ优化等优化系统的方法进行了讨论。     

TELECAST数字广播音频系统及设备技术性能特点简介

音频广播的发展经历了由使用模拟技术到使用数字技术的质的飞跃 ,数字化、智能化、网络化是新型广播电台的必然发展趋势。丹麦ＴＥＬＥＣＡＳＴ集团为广播电台提供了以光纤和计算机网络为基础的智能化的音频广播工艺网整体解决方案。我们认为 ,ＴＥＬＥＣＡＳＴ集团的系统代表了广播电台中心技术最新的发展 ,为广播电台的节目录制、播控系统带来了令人耳目一新的变革。ＴＥＬＥＣＡＳＴ集团由ＳＡＮ ＤＡＲ、ＳＥＥＭＡＵＤＩＯ、ＮＴＰ三家子公司组成 :ＳＡＮＤＡＲ是做视频切换系统的公司 ,ＳＥＥＭＡＵ ＤＩＯ主要从事数字播出、制作调音…     

自对准硅化物CMOS／SOI技术研究

在ＣＭＯＳ／ＳＩＭＯＸＳＯＩ电路制作中引入了自对准钴（Ｃｏ）硅化物（ＳＡＬＩＣＩＤＥ）技术，研究了ＳＡＬＩＣＩＤＥ工艺对ＳＯＩＭＯＳＦＥＴ单管特性和ＣＭＯＳ／ＳＯＩ电路速度性能的影响．实验表明，采用ＳＡＬＩＣＩＤＥ技术能有效地减小ＭＯＳＦＥＴ栅、源、漏电极的寄生接触电阻和方块电阻，改善单管的输出特性，降低ＣＭＯＳ／ＳＯＩ环振电路门延迟时间，提高ＣＭＯＳ／ＳＯＩ电路的速度特性．     

ORACLE系统的管理策略(下)

四、加载器（ＯＤＬ）及其应用在ＯＲＡＣＬＥ系统中，有一个加载器（ＯＲＡＣＬＥＤＡＴＡＬＯＡＤＥＲ），它是一个非常有用的ＤＢＡ工具。它可用来把放在操作系统文件中的数据加载到ＯＲＡＣＬＥ数据库表中。这个数据文件可由应用程序产生，也可由用户使用编辑程序产生...     

自对准硅化物SOI／CMOS技术研究

在ＳＯＩ／ＣＭＯＳ电路制作中引入了自对准钴硅化物（ＳＡＬＩＣＩＤＥ）技术，研究了ＳＡＬＩＣＩＤＥ工艺对ＳＯＩ／ＭＯＳＦＥＴ单管特性和ＳＯＩ／ＣＭＯＳ电路速度性能的影响。实验表明，ＳＡＬＩＣＩＤＥ技术能有效地减小ＭＯＳＦＥＴ栅、源、漏电极的寄生接触电阻和薄层电阻，改善单管的输出特性，降低ＳＯＩ／ＣＭＯＳ环振电路门延迟时间，提高ＳＯＩ／ＣＭＯＳ电路的速度特性。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks