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Universal data access transmission method for retaining system observability under access constraint

A technology of data access and transmission method, applied in the field of communication, can solve problems such as inconvenience of promotion, and achieve the effect of simplicity and ease of implementation

Inactive Publication Date: 2014-09-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can ensure that the system can be observed in the shortest time, but because of the need to know the system parameters, different systems will get different data access and transmission methods, so it is not easy to promote

Method used

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  • Universal data access transmission method for retaining system observability under access constraint
  • Universal data access transmission method for retaining system observability under access constraint
  • Universal data access transmission method for retaining system observability under access constraint

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Embodiment Construction

[0021] The data access and transmission method for maintaining system observability in the present invention is specifically as follows:

[0022] (1) Object modeling: use mechanism modeling and other modeling methods to establish the state space model of observable objects, as follows

[0023] x(k+1)=Ax(k)+w(k), y(k)=Cx(k)+v(k)

[0024] Among them, k is the time, A is the steady reversible matrix, C is the constant observation matrix; x(k) is the n-dimensional system state vector; y(k) is the m-dimensional system output vector; w(k) represents the process noise, is n-dimensional zero mean, covariance Σ w Gaussian white noise vector; v(k) represents the observation noise, which is m-dimensional zero mean, covariance Σ v Gaussian white noise vector; the initial state x(0) obeys zero mean, covariance Σ 0 Gaussian distribution; x(0), w(k), v(k) are independent of each other.

[0025] System observability means that the initial state can be reconstructed, which is generally def...

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Abstract

The invention discloses a universal data access transmission method for retaining system observability under access constraint. The method is simple and easy to realize by use of a selective data access transmission policy for an access constraint problem, and further is capable of retaining the observability of original systems. The method is unrelated to specific parameters of systems, and thus is applicable to random systems according with description and capable of guaranteeing that the systems under the access constraint are observable in a transmission period.

Description

technical field [0001] The invention belongs to the communication field, and relates to a universal data access transmission method for maintaining system observability under access constraints. Background technique [0002] In the fields of networked control, signal transmission, image processing, etc., it is often necessary to transmit multi-dimensional data at the same time. Since providing a separate channel for each dimension of data will result in a waste of communication resources, multiplexing techniques are often used to transmit data during communication, such as time division multiplexing, frequency division multiplexing, and code division multiplexing. Multiplexing technology can realize the simultaneous transmission of multi-dimensional data in the same channel, effectively improving the utilization of communication resources. [0003] In reality, communication resources are limited, that is, the dimensionality of data that can be transmitted by the channel at ...

Claims

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Application Information

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IPC IPC(8): H04L12/28
Inventor 章辉田垠
Owner ZHEJIANG UNIV