Modulation format recognition method and system based on variance analysis

A modulation format and identification system technology, applied in the field of modulation format identification method and system based on variance analysis, can solve the problems of complex operation, high complexity, large comparison library, etc., to avoid complex calculations, high identification accuracy, and method simple effect
CN106209224AInactive Publication Date: 2016-12-07HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
4 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
Publication Date
2016-12-07
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a modulation format recognition method and system based on variance analysis. The modulation format recognition method comprises: a test signal generation step of performing asynchronous delay sampling on a test signal to obtain a test signal X_test; a test signal variance calculation step of calculating the variance of the test signal X_test; and a processing step of calculating a Euclid distance between the variance of the test signal X_test and a library vector C_lab in a comparison library, judging whether the Euclid distance is a minimum Euclid distance or not, if so, performing modulation format output, otherwise, not performing output. The method and the system have the beneficial effects that a modulation format of an optical communication signal is recognized effectively through a variance analyzing algorithm, and recognition is performed by features of the signal under the condition of low chromatic dispersion, so that complex calculation in the prior art is avoided. The method is simple, and online recognition can be performed. The requirement on the system is lower than that of a conventional method; and the recognition accuracy for the modulation format is high.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of optical performance monitoring, in particular to a modulation format identification method and system based on variance analysis. Background technique

[0002] Optical performance monitoring is a relatively new research direction, and currently there are the following main research technologies:

[0003] 1. Modulation format recognition based on artificial neural network: perform asynchronous delay sampling on high-speed optical signals, extract the characteristic parameters and train them with artificial neural network, and finally perform optical modulation format with artificial neural network.

[0004] 2. Modulation format identification based on principal component analysis: Asynchronous delay sampling is performed on high-speed optical signals, the characteristic values ​​of the signals are extracted by principal component analysis method, and a weight vector comparison library is made. The modulation format...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More