共查询到18条相似文献,搜索用时 62 毫秒
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WDM无源光网络关键技术研究 总被引:3,自引:0,他引:3
介绍了WDM无源光网络作为一种宽带接入技术的优势及基本工作原理,并对其关键技术,如多波长激光器、波长路由器、波长监控、频谱分割、媒质接入控制等,作了分析和探讨。 相似文献
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以太无源光网络原理与展望 总被引:1,自引:0,他引:1
本文主要介绍了以太网无源光网络-EPON的结构、原理和主要特点,并分析了光接入网技术的未来发展,给出了其标准化进程,指出目前光接入网中EPON技术具有较大发展空间,但从长远发展来看,如果GPON的最终成本能与EPON相当,将是解决接入网瓶颈的最理想PON技术。 相似文献
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以太无源光网络技术及其进展 总被引:3,自引:0,他引:3
以太无源光网络(EPON,Ethemet Passive Optocal Network)作为下一代接入网的最佳候选技术正在引起人们的广泛关注。详细介绍了以太无源光网络系统结构、工作原理、优势及其关键技术。讨论了以太无源光网络技术的最新进展,并对其发展进行了展望。 相似文献
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无源光网络用于以太网接入 总被引:7,自引:0,他引:7
介绍无源光网络(PON)的结构、业务接口、以太无源光网络(EPON)的工作原理以及管理、帧结构和光路设计,并对EPON提供的业务质量进行了分析,最后对EPON必须解决的几个关键技术难点进行了阐述。 相似文献
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千兆以太网无源光网络(EPON)的物理层研究 总被引:3,自引:0,他引:3
EPON是基于以太网技术的宽带接入系统,采用以太网的帧结构,在传统以太网的点到点和共享(多点到多点)媒体访问机制基础上,增加了一种点到多点的媒体访问机制,即无源光网络媒体,因而EPON在物理媒质参数、编/解码和串行/解串,上行突发通信等方面引出了较为复杂的问题,文章在详细阐述了千兆以太网物理层结构的基础上,深入探讨了上述EOON系统中的物理层问题,并给出了相应的解决方法。 相似文献
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Flexible TDMA/WDMA passive optical network: Energy efficient next-generation optical access solution
Abhishek Dixit Bart Lannoo Goutam Das Didier Colle Mario Pickavet Piet Demeester 《Optical Switching and Networking》2013,10(4):491-506
Access networks must further advance to address the intensification of the requirements of growing speeds and the usage of Internet applications, and time and wavelength division multiple access (TDMA/WDMA) based passive optical networks (TWDM-PONs) have been widely considered as one of the evolutionary steps of next-generation optical access (NGOA) networks. TWDM-PON combines the flexibility of TDMA with an increased capacity offered by the use of a WDM layer. Moreover, it offers interesting and challenging avenues to minimize energy consumption: especially, with current access networks consuming about 80% of the energy consumed in the Internet. Along with other efforts, reducing energy consumption of central offices is conspicuous as it directly minimizes the operational expenditures of network providers. In this paper, we explore the new paradigms to conserve energy at the central offices in TWDM-PONs. By extensive simulations, we evaluate the possible energy savings in the various flavors of TWDM-PON. Based on the findings, we propose a new architectural flavor of TWDM-PON and benchmark the architecture for cost, power consumption and reach. We also propose a novel energy saving scheme for the proposed architecture and evaluate the impact of the proposed algorithm on energy savings by extensive simulations. 相似文献
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To improve the limitations of Ethemet over Coax (EoC) technology in the bidirectional reformation of the hybrid fiber-coaxial (HFC) network, this paper proposes the concept of Ethernet passive electronic network (EPEN) based on multi-point control protocol (MPCP) and the hybrid access scheme of Ethernet passive optical network (EPON) and EPEN.This paper describes the network architecture of EPEN, and introduces the implementation scheme and design of the EPEN system.At present, the project group has been working on the core technology research and key software and hardware design of the EPEN system, on which we have accomplished the hardware design and debugging, the embedded software coding and debugging, the EPEN network management protocol design and software coding.However, there is still a lot to do to achieve networking capability, management, security, quality of service (QoS) and some other functions. 相似文献