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Apparatus for compensating transmitting end channel in wireless sensing network

A wireless sensor network, channel compensation technology, applied to the shaping network in the transmitter/receiver, data exchange through path configuration, synchronization/start-stop system, etc., can solve the problem of increasing the complexity and power consumption of sensor nodes. problem, to achieve the effect of reducing implementation complexity and system energy consumption

Inactive Publication Date: 2012-12-26
JIAXING WIRELESS SENSOR NETWORKS CENT CAS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In the current wireless sensor network to be solved by the present invention, the problem of increasing the implementation complexity and power consumption of sensor nodes due to the need to set complex channel estimation and equalizers in sensor nodes

Method used

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  • Apparatus for compensating transmitting end channel in wireless sensing network
  • Apparatus for compensating transmitting end channel in wireless sensing network
  • Apparatus for compensating transmitting end channel in wireless sensing network

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] For typical application scenarios of the wireless sensor network of the present invention, please refer to figure 2 . In this network, a cluster head node is responsible for collecting the information perceived by each sensor node and transmitting it to the upper network, so the cluster head node has strong functions, and the size, cost and power consumption of the corresponding cluster head node are relatively limited. loose. Several sensor nodes randomly arranged in the network are responsible for sensing the surrounding events and transmitting them to the cluster head node. The sensor nodes here need to be as small as possible and the cost as low as possible to achieve large-scale random deployment. At the same time, in order to make the survival time of the network as long as possible, the energy consumption of the sensor nodes should be a...

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Abstract

The invention discloses a transmitting terminal channel compensation device applied to wireless sensor network, at least comprising: a channel estimator, a channel compensation vector calculator and a signal predistorter. The device is applied in a leader cluster node of the wireless sensor network. The leader cluster node can process to estimate for channel response between a sensor node and a cluster head according to data upstream emitted by the sensor node, and calculate corresponding compensation vector according to the estimated channel response, and then process to adjust width and phase of symbolic emitted on each sub-carrier to process compensation for influence of channel fading, so that the sensor node can gain distortionless emission data, and reduce implementation complexity and system energy consumption of the sensor node without processing complex channel estimation and equalization.

Description

technical field [0001] The invention relates to a transmission node of a wireless sensor network based on a multi-carrier transmission system, in particular to a channel compensation device therein. Background technique [0002] With the rapid development and maturity of communication technology, embedded computing technology and sensor technology, wireless sensor nodes with perception, computing and communication capabilities have begun to appear and have attracted great attention. Such wireless sensor nodes constitute a wireless sensor network that can coordinately perceive, collect and process various environmental or monitoring object information in the network coverage area, and release it to users who need this information. The wireless sensor network integrates the logical information world and the real physical world, profoundly changing the way of interaction between human and nature; it can be widely used in military, industrial and agricultural control, biomedicin...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/38H04L25/03H04L25/02H04L25/49H04L12/28
Inventor 陈晨姜建施玉松万溢萍姜华刘海涛
Owner JIAXING WIRELESS SENSOR NETWORKS CENT CAS