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Method for Estimating the Number of Active Personnel Based on Channel State Information

A technology of channel state information and active personnel, applied in the field of signal processing and wireless signal processing, can solve the problems of poor accuracy, low estimation accuracy, and poor applicability, and achieve good stability, high estimation accuracy, Overcoming the effect of large fluctuations in results

Active Publication Date: 2019-03-26
XIDIAN UNIV +1
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AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the estimation accuracy is poor and the applicability is not strong
The disadvantage of this method is that the estimation accuracy is not high, and the estimation results fluctuate greatly.

Method used

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  • Method for Estimating the Number of Active Personnel Based on Channel State Information
  • Method for Estimating the Number of Active Personnel Based on Channel State Information
  • Method for Estimating the Number of Active Personnel Based on Channel State Information

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] refer to figure 1 , the concrete steps that the present invention realizes are as follows:

[0035] In the area to be estimated where the number of active personnel needs to be estimated, the steps for offline training are as follows:

[0036] Step 1, collect channel state information of the known number of active personnel.

[0037] Set up a population estimation system in the area to be estimated, which includes a wireless access point, 4 monitoring points and a central server. The 4 monitoring points are all equipped with wireless network cards capable of collecting channel state information. The wireless access point is established based on 802.11n wireless LAN communication standard wireless network, all monitoring points and central server are connected with wireless access point. Each monitoring point continuously sends ping command data packets to the...

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Abstract

The invention discloses a method for estimating the number of active personnel based on channel state information, which mainly solves the problems of inaccurate and large fluctuations in the estimation result of the number of active personnel in the existing method. The present invention includes two stages of off-line training and online estimation, and the specific steps of the off-line training stage are as follows: (1) collecting the channel state information of the known number of active personnel; (2) extracting the characteristics of the channel state information of the known number of active personnel; (3) ) training support vector machine classifier; the specific steps of the online training phase are as follows: (4) collect the channel state information of the number of active personnel to be estimated; (5) extract the channel state information features of the number of active personnel to be estimated; (6) estimate the active personnel quantity. The present invention can extract channel state information features that can accurately distinguish the number of different active personnel, and effectively improves the accuracy and stability of estimating the number of active personnel.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and further relates to a method for estimating the number of active personnel based on channel state information in the technical field of wireless signal processing. The present invention trains the support vector machine classifier in the offline training stage, and uses the trained support vector machine classifier to estimate the number of active personnel in the online estimation stage, which can be used for counting or monitoring active personnel in and out of similar smart home scenes Quantities are estimated and monitored online. Background technique [0002] In many scenarios in real life, it is of great significance to obtain an estimate of the number of active people in a certain area. An ideal method for estimating the number of active personnel should have a wide range of applications, high estimation accuracy, and no constraints on users. Due to the diversity of scenario...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07C9/00G06K9/62H04B17/309H04W24/08
CPCH04B17/309H04W24/08G07C9/00G06F18/2411
Inventor 秦浩柯旭李鹏宋彬
Owner XIDIAN UNIV
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