Up channel noise intelligent recognition method of broadcasting television access network

A radio and television, intelligent identification technology, applied in the direction of electrical components, transmission monitoring, transmission systems, etc., can solve problems such as signal damage, and achieve the effect of good practical value

Inactive Publication Date: 2012-11-07
TIANJIN UNIV
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AI Technical Summary

Problems solved by technology

[0007] Aiming at the noise problem that the upstream channel of the NGB access network is likely to cause signal damage, the present invention proposes an intelligent identification method suitable for the noise of the upstream channel of the NGB a...

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  • Up channel noise intelligent recognition method of broadcasting television access network
  • Up channel noise intelligent recognition method of broadcasting television access network
  • Up channel noise intelligent recognition method of broadcasting television access network

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Embodiment Construction

[0021] best practice

[0022] Such as figure 1 As shown, the present invention includes four main steps: NGB uplink channel noise and interference analysis, data acquisition, eigenvalue calculation, neural network training and testing.

[0023] The specific plan is as follows:

[0024] (1) NGB uplink channel noise and interference analysis

[0025] There are two main types of noise and interference in the NGB uplink channel: structural noise from inside the network and intrusion noise from outside the network, which is also called intrusion interference. Structural noise is mainly composed of thermal noise, while intrusion noise mainly includes pulse interference and narrowband continuous wave interference. Through the long-term and massive observation and statistical analysis of the actual NGB network uplink channel impairment signal, the one-to-one correspondence between the actual NGB network uplink channel impairment signal spectrum and noise and interference types can ...

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Abstract

The invention belongs to the field of broadcasting television network two-way transmission health monitoring, and relates to an up channel noise intelligent recognition method of a broadcasting television access network. The method comprises acquiring the real-time spectral data of the up channel of a NGB (next generation broadcasting) network; classifying the main noise of the up channel of the NGB network to thermal noise, narrow-band continuous wave interference, and wide-band pulse interference, selecting some fields from the real-time spectral data of the up channel of the NGB network, and determining the type of the main noise of each field; extracting the characteristic value of a plurality of frequency points of each field; constructing a three-layer BP (back propagation) neutral network; training the BP neutral network by using LM (levenberg-marquart) algorithm to obtain a neutral network model for intelligently recognizing the noise of the up channel of the NGB network; and effectively determining the noise type of the newly-inputted real-time spectral data of the NGB up channel by the neutral network model. The up channel noise intelligent recognition method provided by the invention has a fault diagnosis accuracy of 85% or above, and has high practical value.

Description

Technical field [0001] The invention belongs to the field of two-way transmission health monitoring of a radio and television network, and in particular relates to a noise identification and fault diagnosis technology for an uplink channel on a next-generation radio and television network (NGB) access network. Background technique [0002] The "Outline of the Eleventh Five-Year Plan for National Economic and Social Development" clearly points out: Strengthen the construction of information infrastructure such as broadband communication network, digital TV network and next-generation Internet, promote the integration of the three networks, and improve the information security system. The national "Twelfth Five-Year Plan" listed "triple network integration" as the key content of the development of new generation information technology. Accelerating the construction of a new generation of cable digital TV network is not only an internal requirement for cable network upgrading a...

Claims

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Application Information

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IPC IPC(8): H04B17/00H04B17/345H04B17/391
Inventor 马永涛刘开华朱琳
Owner TIANJIN UNIV
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