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A multi-channel rof system based on wdm and ofdm technology

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: 2017-08-25
WUHAN HONGXIN TELECOMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A multi-channel rof system based on wdm and ofdm technology
  • A multi-channel rof system based on wdm and ofdm technology
  • A multi-channel rof system based on wdm and ofdm technology

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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. Such as 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 ou...

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Abstract

The invention discloses a multi-channel ROF system based on WDM and OFDM technology. From the central office to the service terminal, it 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, and for converting Central office WDM module for multi-carrier RF optical signal multiplexing processing, backbone optical fiber for transmitting multiplexed signals, remote WDM module for demultiplexing multiplexed signals, used for photoelectric conversion of demultiplexed signals, The remote antenna unit RAU and antenna for frequency shifting and transmitting of multi-carrier radio frequency signals and microwaves, the outdoor data unit ODU and antennas for receiving microwave signals and realizing frequency shifting of microwave and multi-carrier IF signals, and for realizing multi-carrier IF Broadband business unit BTU for signal and Ethernet data conversion. Through this system, wireless access can be used to solve the problem of difficult fiber access; OFDM technology solves the problem of multi-user coverage in one area with a single wireless frequency point; wavelength division multiplexing technology solves the problem of user coverage in multiple areas.

Description

technical field [0001] The present invention relates to the field of optical fiber communication and wireless communication technology, in particular to a multi-channel ROF system based on WDM and OFDM technology, especially a ROF (Radio over Fiber radio frequency over 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 fiber optic deployment difficulties and cannot enter the home. Condition. [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....

Claims

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Application Information

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Patent Type & Authority Patents(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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