Multi-channel ROF system based on WDM and OFDM technologies

A multi-channel, technical technology, applied in fiber optic radio, fiber optic transmission, etc., can solve problems such as the difficulty of fiber optic access to the home

Active Publication Date: 2015-11-18
WUHAN HONGXIN TELECOMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Through this system, wireless access can be used to solve the problem of difficult access to fiber optic households

Method used

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  • Multi-channel ROF system based on WDM and OFDM technologies
  • Multi-channel ROF system based on WDM and OFDM technologies
  • Multi-channel ROF system based on WDM and OFDM technologies

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Embodiment Construction

[0032] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0033] A kind of multi-channel ROF system based on WDM and OFDM technology described in the present invention, its implementation mode is as follows:

[0034] figure 1 It is a schematic structural diagram of a multi-channel ROF system based on WDM and OFDM technology provided by the specific embodiment of the present invention. like figure 1As shown, a kind of multi-channel ROF system based on WDM and OFDM technology described in the present invention, from the central office to the service terminal includes: the central office equipment ROFCS for realizing the conversion of the central office service platform data to the multi-carrier radio frequency optical signal , the central office WDM module for multiplexing the multi-carrier radio frequency optical signals outpu...

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Abstract

The invention discloses a multi-channel ROF system based on WDM and OFDM technologies. The multi-channel ROF system successively comprises an ROF central station (ROFCS) for achieving conversion from local office business platform data to a multicarrier radio-frequency optical signal, a central office WDM module for combined wave processing of the multicarrier radio-frequency optical signal, a truck optical fiber for transmitting a combined wave signal, a far-end WDM module for partial wave processing of the combined wave signal, far-end antenna units (RAU) and antennas which are used to perform photoelectric conversion on the signal after wave partition and frequency shift and emission of the multicarrier radio-frequency signal and a microwave, outdoor data units (ODU) and antennas which are used to receive the microwave signal and achieve frequency shift of the microwave and a multicarrier intermediate-frequency signal, and broadband traffic units (BTUs) which are used to achieve conversion of the multicarrier radio-frequency signal and Ethernet data. The system can solve the problem of the difficulty in fiber-to-the-home by utilizing a wireless access mode, the OFDM technology solves the multi-user coverage problem of a single wireless frequency point in an area, and the wavelength division multiplexing technology solves the user coverage problem of a plurality of areas.

Description

technical field [0001] The present invention relates to the field of optical fiber communication and wireless communication technology, and in particular to a multi-channel ROF system based on WDM and OFDM technology, especially a ROF (Radioover Fiber) system that uses OFDM technology to realize multi-channel wireless and optical fiber hybrid access. Background technique [0002] At present, major operators are vigorously building FTTH (Fiber To The Home, fiber-to-the-home) networks, but for some regions and some customers, due to environmental restrictions or policy restrictions, there are still some situations where fiber deployment is difficult and home access is impossible. [0003] On the other hand, wireless high-bandwidth access coverage technologies, such as TD-LTE, FDD-LTE, and LMDS, are also developing rapidly, and as wireless frequency resources become increasingly scarce, they are gradually extended to microwave frequency bands above 10 GHz. Microwave band wirele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/2575
Inventor 明轩祁中洋刘永飘李军成诺穆里·穆罕默德
Owner WUHAN HONGXIN TELECOMM TECH CO LTD
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