共查询到19条相似文献,搜索用时 78 毫秒
1.
2.
3.
宽带光纤接入网及其发展展望 总被引:2,自引:0,他引:2
文章指出各种宽带光纤接入网都有其最佳使用场合和时机,宽带点到点有源光纤系统最适合企事业用户;宽带点到点有源以太网光纤系统适合在低密度用户分散地区应用;宽带点到多点无源光纤系统最适合新建或改建的密集用户区应用.文章认为中国宽带光纤接入网的发展将可能跨越ATM无源光网络(APON)、宽带无源光网络(BPON)和以太网无源光网络(EPON)阶段,从宽带点到点以太网光纤系统和千兆比特以太网无源光网络(GEPON)开始,较快地过渡到千兆比特无源光网络(GPON). 相似文献
5.
EPON:下一代接入网的最佳选择 总被引:7,自引:0,他引:7
EPON技术具有大带宽、高性价比、结构简单和一定服务质量保证等特点,被业界普遍看好,成为下一代接入网的最佳候选技术。本文主要介绍了EPON的工作原理、分层结构、接入控制和组帧方式,最后给出了实现EPON的关键技术和难点以及EPON的发展近况。 相似文献
6.
7.
8.
EPON技术具有大带宽、高性价比、结构简单和一定服务质量保证等特点,被业界普遍看好,成为 下一代接入网的最佳候选技术.本文主要介绍了EPON的工作原理、分层结构、接入控制和组帧方式,最后给出 了实现EPON的关键技术和难点以及EPON的发展近况. 相似文献
9.
10.
浅谈EPON技术及应用 总被引:2,自引:0,他引:2
EPON(EthernetPositiveOpticalNetwork ,以太无源光网络 )技术是一种新型的多业务宽带光纤接入网技术 ,采用与当前电信网络IP化相一致的协议 ,其研发过程是基于市场的。在快速以太网、千兆比以太网和10G以太网逐渐成为网络主流的同时 ,也给该技术开拓了广阔的市场。本文通过EPON和APON的对比 ,分析EPON的工作原理和应用。1EPON的工作原理1.1EPON的体系结构事实上 ,EPON是由APON (ATMPositiveOpticalNetwork,ATM无源光网络 )逐渐演化而… 相似文献
11.
12.
13.
14.
15.
Daniel J. C. Coura Jair A. L. Silva Marcelo E. V. Segatto 《Photonic Network Communications》2009,18(3):409-416
In order to reduce the cost for delivering the ever increasing broadband services, network providers need to simplify their
network architectures and have a better control of the bandwidth. In this article, we propose a simple and cost-effective
bandwidth scalable passive optical network (PON) based on orthogonal frequency division multiplexing (BSOFDM-PON). We report
performance analysis in terms of the signal-to-noise ratio (SNR), bit-error-rate (BER), and error vector magnitude (EVM) of
a PON system accommodating 32 optical network units (ONUs). Our simulations have successfully demonstrated that throughputs
of 35.5 and 53.2 Gbps can be achieved using 16 and 64 QAM, respectively, within a total distance ranging from 20 to 30 km.
It gives throughputs of 1.10 and 1.66 Gbps per ONU. 相似文献
16.
《Communications Magazine, IEEE》2002,40(2):66-73
This article describes Ethernet passive optical networks, an emerging local subscriber access architecture that combines low-cost point-to-multipoint fiber infrastructure with Ethernet. EPONs are designed to carry Ethernet frames at standard Ethernet rates. An EPON uses a single trunk fiber that extends from a central office to a passive optical splitter, which then fans out to multiple optical drop fibers connected to subscriber nodes. Other than the end terminating equipment, no component in the network requires electrical power, hence the term passive. Local carriers have long been interested in passive optical networks for the benefits they offer: minimal fiber infrastructure and no powering requirement in the outside plant. With Ethernet now emerging as the protocol of choice for carrying IP traffic in metro and access networks, EPON has emerged as a potential optimized architecture for fiber to the building and fiber to the home 相似文献
17.
基于EPON+MoCA的CATV高速接入网方案设计 总被引:1,自引:0,他引:1
阐述了MoCA技术标准c.LINK的技术特点与优势.针对传统广电双向改造方案所提供的10带宽难以满足用户高清电视、高速下载需求问题,以MoCA技术多频道高速带宽优势为基点设计了基于E-PON+MoCA技术的有线电视高速宽带接入网方案. 相似文献
18.
文章介绍了10 Gbit/s以太网无源光网络(10 Gbit/s EPON)系统中光网络单元(ONU)光模块的关键技术,以及突发式光收发模块的设计.测试结果表明:该模块在突发条件下发射开关延迟短,在宽的温度范围内能保持稳定的光功率和消光比,并且指标满足10 Gbit/s EPON标准IEEE Std.802.3av的要... 相似文献