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Wavelength Division Multiplexing Passive Optical Network Transmission System Based on Optical Orthogonal Frequency Division Multiple Access

An orthogonal frequency division multiple access, passive optical network technology, applied in the system field of the optical communication technology field, can solve the problems of increasing the cost of the passive optical network, unfavorable passive optical network upgrade, etc., and achieves easy upgrade and capacity expansion, The effect of reducing network operating costs and operating costs, increasing coverage

Inactive Publication Date: 2011-12-14
SHANGHAI JIAO TONG UNIV
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AI Technical Summary

Problems solved by technology

This architecture realizes a variety of service access, but in the uplink data transmission, different optical network units still need different wavelengths to upload data, increasing users need to add new wavelengths, which is not conducive to the upgrade of passive optical networks, and will Increased cost of passive optical network

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  • Wavelength Division Multiplexing Passive Optical Network Transmission System Based on Optical Orthogonal Frequency Division Multiple Access
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  • Wavelength Division Multiplexing Passive Optical Network Transmission System Based on Optical Orthogonal Frequency Division Multiple Access

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Embodiment Construction

[0020]Below in conjunction with accompanying drawing, provide the detailed description and specific implementation of the embodiment of the present invention: each embodiment is implemented on the premise of the present invention and technical scheme, provides detailed implementation and process, but the protection scope of the present invention does not Limited to the following examples.

[0021] Such as figure 1 As shown, in this embodiment, the wavelength division multiplexing passive optical network transmission system based on optical orthogonal frequency division multiple access includes an optical line terminal 1, a ring access fiber 2, and n sub-passive optical network, wherein each sub-passive optical network includes a distributed optical fiber 3, a remote node, and a number of optical network units, and each of the remote nodes is respectively connected to N The optical network unit, wherein, N depends on the optical splitting ratio of the splitter and combiner in ...

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Abstract

The present invention provides a wavelength division multiplexing passive optical network transmission system based on optical orthogonal frequency division multiple access, including an optical line terminal, a ring access fiber, and several sub-passive optical networks. The remote nodes of the network are respectively connected to N optical network units through corresponding distributed optical fibers. Multiplexed signals, WDM signals are demultiplexed at the remote node, then transmitted to the corresponding sub-passive network, and the information is transmitted to each optical network in the corresponding sub-passive optical network through the corresponding distributed optical fiber network unit. The present invention realizes large-capacity, long-distance communication, can make full use of the advantages of OFDM technology, and improves frequency band utilization. In addition, the ring tree topology can realize the integration of metropolitan area network and access network, and improve The reliability of the network, thereby improving the access capability and service quality of the passive optical network.

Description

technical field [0001] The invention relates to a system in the technical field of optical communication, in particular to a wavelength division multiplexing passive optical network transmission system based on optical orthogonal frequency division multiple access. Background technique [0002] With the rapid development of information technology, emerging broadband services such as high-definition TV (High Definition TV, HDTV), interactive games, large file sharing, and video conferencing continue to emerge and grow, and the broadband and multi-service unification of the access network Bearing capacity and transmission capacity put forward higher requirements. Therefore, the future access network requires the functions of broadband access and long-distance high-capacity communication. [0003] Passive Optical Network (PON) is a fiber optic broadband access technology and one of the mainstream technologies for broadband access networks. Its advantages such as low cost, larg...

Claims

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Application Information

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IPC IPC(8): H04J14/02H04B10/12H04B10/20H04B10/27H04Q11/00
Inventor 周钊肖石林毕美华朱敏史杰陈荷胡卫生
Owner SHANGHAI JIAO TONG UNIV
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