WDM与PSPON相结合的接入系统与传输

在无源光接入系统中引入波分复用技术,可以大大提高光纤带宽的利用率,更好的解决接入网瓶颈问题.     

浅谈移动运营商城域接入网的融合演进

文章以近两年中移动在各省市大力发展建设全业务接入网为背景，从网络实情与接入传输技术特性出发，对未来3～5年移动运营商在接入网的融合演进方面提出明确目标及具体实施建议。     

一种新型的FTTH用户终端的研制与开发

介绍了FTTH的基本概念和其语音业务几种常见的解决方案。针对融合业务解决方案的需求，提出一种支持双模语音接入的用户终端的实现方案．阐述了支持双模语音业务接入的ONU的硬件和软件实现方法，讨论了这种ONU研制开发中需要解决的问题，描述了ONU的市场状况和发展前景。     

Planning in the emergency operations center

Planning is a deliberate process that often times calls for the integrated efforts of numerous individuals from a variety of disciplines. From my personal experience, nowhere is this more apparent or critical than with the Emergency Operations Center (EOC) during a disaster or catastrophe. During an EOC activation the planning function is critical to the success of field operations and overall situational awareness. The planning function is conducted within very stringent timeframes and often with limited information. While creating a plan on time is important, making sure the plan is as accurate as possible is essential.     

Employee organizational commitment: the influence of cultural and organizational factors in the Australian manufacturing industry

The importance of enhancing employee organizational commitment (EOC) is highlighted by the extensive literature revealing its positive impact on employees' job performance, reducing absenteeism and turnover rates, and improving employees' adaptability to organizational change. This study provides an insight into how EOC levels can be enhanced by examining the contextual factors that can influence EOC. Specifically, the study examines the association between cultural, organizational, and demographic factors with the level of EOC in the Australian manufacturing industry. Data were collected by a survey questionnaire from a random sample of 500 managers with the results revealing that two cultural factors (outcome orientation and stability) and three organizational factors (organizational size, perceived organizational support and job satisfaction) were found to be significantly associated with the level of EOC. Further analysis provides a preliminary insight into how to enhance the EOC of specific managers with different cultural and organizational factors found to be associated with the EOC of managers at different levels in the organizational hierarchy. The findings have important implications for practitioners attempting to improve the level of EOC of their employees with the subsequent enhancements in the level of EOC likely to contribute to improvements in productivity and growth in the Australian manufacturing industry.     

Economic implications of a co-investment scheme for FTTH/PON architectures

Due to the high costs associated with the deployment of the passive infrastructure of FTTH networks, a few alternative operators have pondered the possibility of making co-investments based on a network sharing model. The purpose of this article is to explore economic aspects of a co-investment scheme for present and future FTTH/PON architectures. The article describes the cost reductions that can be achieved when a co-investment scheme is used, as well as the relationship between market shares and the cost per home connected. A cost model was employed to calculate the investment per home passed and the investment per home connected. The investment per home passed for an alternative operator indicates significant cost reductions when a co-investment scheme is used. On the other hand, the results show that when the incumbent's market share is equal or higher than the total market share of all the alternative operators that share the network infrastructure, the investment per home connected for an alternative operator is higher than that for the incumbent operator. Moreover, to be cost competitive with the incumbent operator, the necessary market share that each alternative operator should achieve is much lower than that of the incumbent operator.     

FTTH规模应用的探讨

FTTH是以光纤为传输媒质的宽带接入方式,具有高带宽、抗干扰、易维护等特点,是目前已有的固定接入技术中最能满足面向未来需求的技术,是光纤宽带网络的终极模式。从FTTH应用场景、FTTH与FTTB的技术对比及建设成本方面进行分析,提出FTTH规模应用条件已经成熟,并就PON技术选择、分光比、后续演进方向等方面提出建设建议。     

谈移动运营商IP城域网与宽带接入网的协调发展

中国移动采用PON技术作为宽带接入的主要手段，规模性建设的宽带接入网如何与其上层的IP城域网的建设协调发展，成为运营商关注的热点之一。文章针对中国移动的特点，从网络层次及架构上提出了IP城域网及宽带接入网建设的模式，并探讨了各类传输设备的应用层面。     

多种PON技术之研究与分析

文章旨在阐述PON技术发展的形式与方向,并对主要的两种技术EPON,GPON进行了对比分析,最后对下一代PON技术进行了简要的介绍。     

PON技术浅析

随着信息技术的不断发展,人们在信息交流上对带宽的需求越来越高,同时下一代网络的业务发展对网络带宽的要求也在逐步提高,光纤接入网的带宽优势正好解决了这个问题。PON技术是在光纤接入网中目前各大厂商和运营商都非常看好的一种技术,文章主要介绍了PON接入技术的核心网络结构,几种不同的接入方式以及各种PON接入技术的忧缺点分析。