大容量通信

基于高速率、大容量通信系统的WDM技术

The WDM Technology in the High Speed and Great Capability Communication System

分析了高速率、大容量通信系统中WDM技术的应用及发展前景，并对当前及今后发展WDM的新技术作了阐述。

This paper analyzes the application and development perspective of the WDM technology in the high speed and great capability communication system , and discusses the new technology of WDM in current stage and the future .

OFDMA是下一代无线通信系统中在下行链路上实现大容量通信的一种有前途的技术，其中的关键技术之一是在共享信道的用户间公平合理地分配子载波和功率。

Orthogonal frequency division multiple access ( OFDMA ) is a promising technique for achieving high downlink capacities in next generation wireless communication system . A key issue in OFDMA is the allocation of the sub-carriers and power among users sharing the channel .

在大容量通信网络中，快速恢复由于网络设备失效而中断的业务是至关重要的。

The fast restoration from network failure is extremely important for the high capacity broadband network .

社会信息化的发展对高速大容量通信网络的发展提出了迫切的要求。

The developing of information society raises an urgent request for high-speed , huge-capacity communication network .

从设备的电磁兼容与热设计方面具体阐述了提高高速率大容量通信传输设备可靠性的方法。

Has described the method of increasing reliability about high rate and large capacity telecommunication transmission equipment from electromagnetic compatibility and thermo-management .

第一代单模光纤传输系统设计用于长途大容量通信，其中继距离在40公里以上。

First generation single-mode fiber transmission systems are designed to serve as high capacity intercity transport with repeater spacing engineered up to 40 km .

所有这些应用都对大容量通信提出了越来越高的要求，使得光纤通信技术向着速度高、容量大、可伸缩性好的方向发展。

All these bring the need for larger and larger communication capacity , which stimulate fiber communication system develop towards adaptive , high speed , large capacity data transmission .

在实现高速率、大容量通信传输的同时，如何有效对抗信道频率选择性衰落所导致的码间干扰，始终是无线通信的一个研究热点。

How to resist the inter-symbol interference caused by the frequency selective fading effectively while achieving high speed and high-capacity communication transmission is a key research direction in wireless communications .

网络的数据流量在近年呈现出指数增长的趋势，随着大容量通信需求的迅速增加，各类高速光传输技术都得到了充分的发展。

Data flow of the internet is showing a trend of exponential growth in recent years . With the increasing demands of large-capacity communication , all kinds of high-speed optical transmission technology have been fully developed .

为了更全面和客观地评价宽带大容量通信网络的可靠性能，引入宏观可靠性指标&总容量归一化加权可靠性指标概念，它是把通信容量和链路可靠性参数有机地综合在一起的指标。

A concept of weighted reliability index normalized by the total capacity called index of macroscopic reliability is introduced in this paper to evaluate reliability of broadband network comprehensively and objectively . This index combines communication capacity with link reliability parameter effectively .

波分复用（WDM）技术已成为高速率、大容量光通信系统发展的主流方向。

Wavelength Division Multiplexing ( WDM ) technology has been a highlight spot in the high speed , large capacity optical communication system .

随着光通信技术的发展，具有分布反馈（DistributedFeedback，DFB）结构的激光器成为高速率大容量光通信系统中必不可少的器件。

With the development of optical communications , the distributed feedback ( DFB ) lasers have become the necessary parts in optical communication systems with high speed and great capacity .

非线性信道线性化是大容量QAM通信系统关键技术之一。

Abstract & The linearization on nonlinear channels is one of key technigues in MQAM high capacity communication systems .

在被应用到光纤通信系统中时，OFDM技术自身的特性同样发挥着重要的作用，使其非常适合大容量光纤通信系统。

When applied in optical fiber communication field , the character of OFDM technique was still play an important role , which made OFDM technique suitable in high capacity optical fiber communication systems .

光时分复用（OTDM）系统是未来高速、大容量光纤通信系统的优选方案之一。

OTDM system is one of the best candidates for high-speed , high capacity optical communication system in the future .

波分复用（WDM）技术是目前大容量光纤通信网普遍采用的技术，为了进一步提高通信容量，波分复用通信系统正朝着信道数越来越多的方向发展。

The technology of wavelength division multiplexing ( WDM ) is widely used for the high-capacity fiber-optic network . In order to enhance the communication capacity , WDM transmission system is moving in the direction of increasing channels .

波分复用技术是解决宽带，大容量光纤通信网络的一种有效方法，波分复用／解复用器件是WDM系统的关键器件。

Wavelength Devision Multiplexing ( WDM ) has become the technology to meet the rapid increase of bandwidth and capacity requirements in communication systems and networks , Multiplexing and De-Multiplexing devices are the key components in WDM system .

近年来，掺铒光纤放大器（EDFA）与波分复用（WDM）相结合的传输技术已成为高速率、大容量光通信发展的主流方向。

Erbium doped fiber amplifier ( EDFA ), in conjunction with wavelength division multiplexing ( WDM ) techniques , has been the dominated direction to improving the capacity of high speed optical communication in recent years .

超高速大容量光通信技术的发展

Development of the Super High Bitrate and Large Capacity Optical Communication Technology

OFC2000报道大容量光纤通信继续进展

Technology Progress of Large capacity Optical fiber Communications as reported by OFC 2000

大容量光通信系统及其适用的光纤

Large Capacity Optical Communication System and Suitable Fibers

相应地，人类对高性能大容量无线通信系统的需求也越来越大。

Thus , people have great demand for high performance and big capacity telecommunication systems .

未来的大容量无线通信

High Capacity Radio Communications in Future

全光波长转换是未来高速大容量光通信系统中的关键技术之一。

All-optical wavelength conversion ( AOWC ) is a key technology in future high-speed and large-capacity optical communication networks .

高速大容量光通信系统的发展对磁光材料的带宽和温度稳定性提出了更高的要求。

Advances of high speed and mass scale optical communication systems required magneto-optical materials on higher performance of bandwidth and stable temperature properties .

波分复用技术已经被公认是大容量光通信网络的主流技术。

Wavelength Division Multiplexing ( WDM ) has been widely recognized as the main and most important technology to achieve huge-capacity optical communication network .

它具有结构简单，频谱利用率高的优点，因此成为高速大容量光纤通信系统中的研究热点。

It has high frequency efficiency and its implement is simple . Therefore , it has become the topic in high-speed mass optical fiber communication system .

宽带需求的急剧增长给网络基础设施的建设带来了巨大压力，高速率、大容量光通信系统成为下一代网络的重要支撑之一。

The rapid development of bandwidth demand creates enormous stress for the construction of network infrastructure . The high speed and large capacity optical communication system will be the vital infrastructure of the next generation networks .

光纤放大器是一种全光放大器件，具有高可靠性、低损耗、宽带宽等优点，在高速光纤通信系统中得到了广泛的应用，是大容量全光通信系统中的重要器件之一。

Owning the properties of high reliability , low loss and wide bandwidth , it has been widely used in high-speed optical fiber communication systems . It is also one of important devices in large-capacity all-optical communication systems .