Compressed data collection method based on virtual MIMO

A data compression and data aggregation technology, applied in the field of wireless transmission, can solve the problems of high energy cost, high packet loss rate and error-prone transmission, and achieve the effects of low energy consumption, improved network life cycle, and improved transmission performance

Active Publication Date: 2016-02-17
ANHUI UNIVERSITY
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Problems solved by technology

[0007] The present invention aims to solve the problems of excessive transmission energy cost and high error-prone transmission rate in the existing wireless sensor network data collection process, and provides a compressed data collection method based on virtual MIMO, in order to reduce the data collection process The transmission energy consumption and packet loss rate in the medium can improve the data collection efficiency of the wireless sensor network and prolong the life cycle of the network

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  • Compressed data collection method based on virtual MIMO
  • Compressed data collection method based on virtual MIMO
  • Compressed data collection method based on virtual MIMO

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Embodiment Construction

[0043] In this embodiment, a method for collecting compressed data based on virtual MIMO (Multiple Input Multiple Output) is applied in a wireless sensor network composed of N sensor nodes and a data aggregation terminal SINK; an energy consumption model is established at the data aggregation terminal SINK And perform multi-parameter joint optimization to obtain various optimization parameters (β, ρ, n c ,M t , b) and the compressed measurement matrix Φ; N sensor nodes are respectively used to obtain monitoring data and obtain compressed data after the compressed measurement of the compressed measurement matrix; the compressed data is formed by other sensor nodes based on the optimized parameters collected by the data compression The virtual MIMO array is sent to the data aggregation terminal SINK in a modulation mode; the data aggregation terminal SINK receives the compressed data, reconstructs the compressed data to restore the monitoring data of N sensor nodes and sends it to ...

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Abstract

The invention discloses a compressed data collection method based on virtual MIMO. The compressed data collection method based on virtual MIMO integrates compressed sensing with the MIMO transmission technology, and can perform joint optimization of clustering number of network, the sparse rate and the compression ratio of a compression measurement matrix, the node number taking part in cooperative transmission, and the size of the constellation graph modulated during the remote transmission process, so as to realize collection of compressed data with low energy consumption. The compressed data collection method based on virtual MIMO can reduce the transmission energy consumption and the packet loss ratio during the data collection process so as to improve the data collection efficiency for a wireless sensor network and prolong the life cycle of the network.

Description

Technical field [0001] The invention belongs to the field of wireless transmission technology, and in particular is a virtual MIMO-based energy-efficient compression data collection method applied in a wireless sensor network. Background technique [0002] As we all know, sensor nodes in wireless sensor networks generally use small embedded devices, and the battery power carried by a single node is limited. However, the application of wireless sensor network is usually oriented to some large-scale monitoring fields, and massive monitoring data needs to be collected. Therefore, how to reduce node energy consumption to achieve effective collection of wireless sensor network data is a key issue that needs to be solved urgently. [0003] Compressed sensing technology just provides a new method of data acquisition. By simply compressing and projecting sparse signals, the dimensionality of the signal can be greatly reduced, that is, the data can be greatly compressed. Using a suitable s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W84/18
CPCH04W52/0203H04W84/18Y02D30/70
Inventor 蒋芳胡艳军
Owner ANHUI UNIVERSITY
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