Transmission of 10 GHz, 3.5 ps Optical Pulses Over 100-km Standard Fiber Using Mid-span Spectral Inversion

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移动通信光传送网及其维护管理策略

光传送网是移动通信的基础网络 ,它的质量直接影响到移动通信网络的正常高效运行。对移动通信光络的组网特点进行了分析 ,并针对目前移动通信光传送网维护管理中存在的问题和应采取的策略进行了探讨 ,以供业界同仁交流和参考。     

高压传输线附近磁场环境的理论分析

应用复镜象理论计算了高压传输线和电气化铁路附近磁感应强度的量值，指出了低于千分之二高斯的安全区域，并对高压传输线和电气化铁路的磁污染进行了讨论。     

On the evaluation of strategies for branching bandit processes

Glazebrook [1] has given an account of improved procedures for strategy evaluation for resource allocation in a stochastic environment. These methods are extended in the paper in such a way that they can be applied to problems which, for example, have precedence constraints and/or an arrivals process of new jobs. Theoretical results, backed up by numerical studies, show that quasi-myopic heuristics often perform well.     

水声信道线性均衡的研究

本文在对LMS和稀疏权自适应均衡算法进行分析的基础上，将其引入到水声数据传输中，利用LMS算法对时不变信道和慢变信道进行了仿真实验；利用稀疏权自适应均衡算法对深海信道进行了仿真实验，并获得了仿真结果。     

RF同轴电缆传输系统的设计与维护

介绍同轴电缆的结构与传输特性、射频传输干线与分配网络设计技术.     

基于卫星中继的无人机图像传输系统

基于卫星中继的无人机图像传输系统在遥感图像的传输中有着十分重要的作用。首先讨论了这种系统的应用意义 ,然后提出了一种具体的实现方案 ,对系统中的几个关键部分的设计进行了详细分析。目前的实验成果表明 ,这种基于卫星中继的无人机图像传输系统方案是可行的。     

双掺杂LiNbO3晶体光折变效应研究

研究了系列不同掺杂、不同掺杂浓度、单掺杂和双掺杂以及不同后处理态(生长态、还原态和氧化态)铌酸锂晶体的透过率光谱和光折变二波耦合效应。实验结果表明，高掺杂铌酸锂样品的透过率光谱范围较窄；双掺杂样品比单掺铁样品的抗光折变效应增强，光折变效应降低。氧化态样品具有较大的透过率光谱范围；还原态样品具有较大的光折变二波耦合增益特性。     

Provisioning Methods for Bit-Rate-Differentiated Services in Hybrid Optical Networks

This paper addresses the problem of routing and wavelength assignment of bit-rate-differentiated optical services in a hybrid network. Hybrid optical networks are composed of resources, such as fiber links and photonic/electronic switches, that vary in their capabilities and transmission qualities. These networks are also responsible for the realization of optical services with varying quality-of-service (QoS) guarantees. In such networks, it is required to have a cost-effective assignment of the optical and electronic resources to these services in order to maximize the revenue of the network operator. This paper deals with optical services that are defined according to their tolerance to transmission impairments. We first divide the provisioning problem into two phases: (1) routing and (2) wavelength assignment and regeneration reservation. In the routing phase, a set of k-routes are generated to select from in the second phase, where each route optimizes a specific aspect of the problem (e.g., number of hops, maximum accumulated noise, etc.). The second phase, using the information about the resources along each route, attempts at finding the best wavelength allocation on that route such that the signal quality meets the service-level agreement (SLA). The second phase also uses the minimum number of regenerator ports on intermediate nodes for the purpose of wavelength translation and signal clean-up. Comparisons of the above scheme with a probing-based method, reveal substantial enhancements to the blocking performance with a maximum running time increase of 60%. In addition, the use of multiple routes provides higher reduction in the blocking probability over single-routing schemes. Moreover, the proposed, non-pessimistic, provisioning approach has a major impact on reducing the regeneration budget of the network.     

Open Source Software Movement: A Challenging Opportunity for the Development of China's Software Industry

The software industries in developing countries are facing enormous challenges in order to grow amid fierce competition of import from the software makers in developed countries. Open source software (OSS) movement, which is a particular phenomenon in the software industries, seems to be a challenging opportunity for the developing countries that wants to move their own software industries up the value chain. This paper, using China as an example, identifies the issues that need to be addressed for the software industry, as well as the special characteristics of software products that need to be dealt with carefully. It proposes promoting OSS as a strategy the Chinese government should adopt to grow the software industry and the specific actions that should be taken.