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Wireless real-time multimedia communication flow implementation method based on wavelet analysis and Gamma distribution

A technology of multimedia communication and wavelet analysis, applied in wireless communication, electrical components, network planning, etc., can solve problems such as insufficient description of network traffic bursts, large amount of calculation, etc., to achieve easy understanding, simple method, and low algorithm complexity Effect

Inactive Publication Date: 2011-01-12
NANJING TECH UNIV
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Problems solved by technology

However, the FARIMA model is insufficient in describing the burstiness of network traffic. At the same time, due to its own multi-parameters and complexity, the FARIMA model has too much calculation in practical applications, and there are some problems in some research or applications that require real-time applications. limitations

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  • Wireless real-time multimedia communication flow implementation method based on wavelet analysis and Gamma distribution
  • Wireless real-time multimedia communication flow implementation method based on wavelet analysis and Gamma distribution
  • Wireless real-time multimedia communication flow implementation method based on wavelet analysis and Gamma distribution

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Embodiment Construction

[0060] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0061] Such as figure 1 As shown, the present invention firstly considers the dynamic network environment and real-time communication on the basis of a large amount of characteristic analysis and research on the video communication streams generated under two typical wireless multi-hop network scenarios (nodes do not move and move). In order to describe the characteristics of wireless communication flow more accurately, a wavelet model (GWM) based on Gamma distribution is proposed. GWM first uses Haar wavelet multi-resolution analysis method to divide the data sequence into scale space and wavelet space, and then models in scale space and wavelet space respectively. Through wavelet inverse transformation, the model data of wireless streaming media can be obtained. Because the scale coefficients are approximately Gamma-distributed, in the last level of scale spa...

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Abstract

The invention discloses a wireless real-time multimedia communication flow method based on wavelet analysis and Gamma distribution, belonging to the field of wireless real-time multimedia communication. The method comprises the following steps: firstly, carrying out multi-resolution analysis on wireless real-time multimedia communication flow; secondly, modeling a dimension coefficient of the last stage by utilizing a Gamma model and modeling wavelet coefficients of every stage by utilizing a modification method of normal distribution; and finally, generating model data by wavelet inverse transformation. The invention can well simulate wireless real-time multimedia communication flow data and has simple method, easy comprehension and lower complexity of the algorithm.

Description

technical field [0001] The invention relates to a method for realizing wireless real-time multimedia communication flow based on wavelet analysis and Gamma distribution, belonging to the field of wireless real-time multimedia communication. Background technique [0002] The rapid development of wireless network technology and multimedia applications has made wireless streaming media communication possible. Typical real-time streaming media applications include video telephony, video conferencing, and network gaming. However, the diversity of communication sources makes the communication flow characteristics of modern networks very complex. Many studies have confirmed that communication flows in modern communication networks exhibit self-similar properties. For this characteristic, researchers have proposed many communication models, including ON-OFF model, Fractal Brownian Motion (FBM) model, Fractal Autoregressive Differential Moving Average Model (FARIMA) and so on. How...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/22H04W24/06
Inventor 白光伟王军元曹磊靳勇沈航吴志刚
Owner NANJING TECH UNIV
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