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Subcarrier multiplexing optical network uplink transmission system based on filter multi-carrier modulation

A filter multi-carrier and multi-carrier modulation technology, which is applied in the field of optical communication, can solve the problems of not making good use of subcarrier modulation and waste of spectrum efficiency, and achieve high effective data rate, inter-symbol interference suppression, and easy implementation Effect

Inactive Publication Date: 2017-07-11
SHANGHAI JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, although this paper realizes the transmission of uplink and downlink heterogeneous network signals, the waste of spectrum efficiency is serious, and the advantages of subcarrier modulation are not well utilized.

Method used

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  • Subcarrier multiplexing optical network uplink transmission system based on filter multi-carrier modulation

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0036] The present invention provides a subcarrier multiplexing optical network uplink transmission system based on filter multi-carrier modulation, which includes a sequentially connected access control module, a filter-based multi-carrier modulation module, a subcarrier modulation module, a multiplexing module, and a feeder Type optical fiber, optical amplifier, demultiplexing module, photodetector, subcarrier demodulation module, uplink data receiving module. The filter-based multi-carrier modulation...

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Abstract

The present invention provides a subcarrier multiplexing optical network uplink transmission system based on filter multi-carrier modulation, which includes a sequentially connected access control module, a filter-based multi-carrier modulation module, a subcarrier modulation module, a multiplexing module, and a feeder Type optical fiber, optical amplifier, demultiplexing module, photodetector, subcarrier demodulation module, uplink data receiving module. In the present invention, the data generated by the access control module is modulated by a filter-based multi-carrier modulation method, and the modulated user data is modulated to different optical sub-carriers by using the radio frequency sub-carrier modulation of the optical carrier for transmission. The data of the unit is multiplexed to the upstream fiber channel. The present invention utilizes filter-based multi-carrier modulation technology combined with sub-carrier multiplexing technology to make efficient use of uplink spectrum resources, and at the same time has good performance against inter-symbol interference and inter-subcarrier interference between uplink users, thereby supporting Higher transmission rate and spectral efficiency.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to a subcarrier multiplexing optical network uplink transmission system based on filter (group) multi-carrier modulation technology. Background technique [0002] With the deployment and implementation of the State Council's "Broadband China" strategy, broadband has become the country's strategic public infrastructure for the first time. At present, the development of broadband Internet is changing with each passing day. With the deepening of the "three-network integration" strategy, operators' broadband networks will face a transformation from low-bandwidth requirements, non-real-time, fixed service access to ultra-high bandwidth requirements, real-time multi-service platform service system evolution. As a pipeline for network transmission, in order to cope with the rapid growth of uplink access bandwidth, optical networks are facing unprecedented pressur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2575H04J14/02H04J14/08H04L27/26
Inventor 张鹿肖石林毕美华刘凌陈欣飞
Owner SHANGHAI JIAOTONG UNIV
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