Flexible optical interconnection method for optical mark topping

An optical interconnection and optical labeling technology, applied in the field of flexible optical interconnection, can solve the problems of difficult signal tracking of optical network switching nodes, increase in the number of nodes, and limited ability to identify services, saving frequency band resources, reducing complexity, and channel redundancy. effect of optimization

Active Publication Date: 2021-12-21
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Optical network switching node signals have problems such as difficulty in tracking, limited ability to identify services, and the number of nodes increases significantly with network complexity.

Method used

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  • Flexible optical interconnection method for optical mark topping
  • Flexible optical interconnection method for optical mark topping
  • Flexible optical interconnection method for optical mark topping

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0087] Embodiment 1: The present invention provides a method that encodes routing and switching node information, bandwidth granularity information, modulation format information, and redundant information, performs digital-to-analog conversion, performs low-speed amplitude-frequency mixed modulation, and electro-optical modulation, and transmits them together with the load. The processing scheme is to encode and modulate the above information into an analog baseband signal without affecting the payload, and transmit it simultaneously with the payload after amplitude-frequency mixed modulation (AM-FM) to the frequency range and then electro-optical modulation. The encoding module adopts linear block code, determines the encoding efficiency according to the current signal-to-noise ratio and the initial encoding length, and optimizes the encoding efficiency under the condition of ensuring a low bit error rate. The digital-to-analog conversion module converts the linear block code...

Embodiment 2

[0088] Embodiment 2: Based on the technical solution provided in Embodiment 1, the present invention provides a scheme for obtaining the channel characteristics of the backbone network / calculating the channel capacity of the backbone network, including:

[0089] 1. Calculate the channel capacity C of the backbone network by obtaining the SNR of the backbone network and the channel bandwidth W.

[0090] Shannon's second theorem is used to calculate the channel capacity C of the backbone network, as shown in formula (1).

[0091] (1)

[0092] A coding scheme for routing switching node information, bandwidth granularity information, modulation format information, and redundant information, including:

[0093] 1. Obtain routing and switching node information, bandwidth granularity information, modulation format information and redundant information, and perform source coding. The coding rules are shown in formula (2).

[0094] (2)

[0095] In formula (2), n represents the l...

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Abstract

The invention discloses a flexible optical interconnection method for optical mark topping, and the method comprises the following steps: according to an existing optical transport network path plan, carrying out coded modulation on routing exchange node information, granularity information, modulation format information and redundant information, and transmitting together with payload of a service channel to improve the operation efficiency of an optical network; carrying out coding, digital-to-analog conversion and hybrid modulation on the information so as to add the information to a service channel; wherein the part of information needs to be transmitted on the basis of not influencing the original payload, and the information is acquired at a network node through signal receiving and demodulation; therefore, service identification, service tracking and path planning are realized in the optical network, and the complexity of the optical transport network is effectively reduced; meanwhile, the coding process, the modulation process, the channel redundancy and the like are optimized, and the spectrum efficiency is effectively improved on the basis of the requirements.

Description

technical field [0001] The invention relates to the fields of digital communication and optical network, in particular to a flexible optical interconnection method for adjusting the top of an optical mark. Background technique [0002] Digital communication (digital telecommunications) is a communication method that uses digital signals as carriers to transmit information, or uses carrier waves to modulate digital signals before transmission. It can transmit digital signals such as digitized data, as well as analog signals such as digitized voice and images. [0003] Optical network switching node signals have problems such as difficulty in tracking, limited ability to identify services, and the number of nodes increases significantly with network complexity. Contents of the invention [0004] The purpose of the present invention is to provide a scheme for transmitting modulation information and optical network routing and switching node information and bandwidth granular...

Claims

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Application Information

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IPC IPC(8): H04J3/16
CPCH04J3/1652
Inventor 忻向军张琦王劲然姚海鹏刘博王光全高然田凤田清华
Owner BEIJING UNIV OF POSTS & TELECOMM
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