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Environmental backscatter communication system information transmission method with optimal energy efficiency

A communication system and backscattering technology, which is applied in the field of Internet of Things communication, can solve the problems of limited communication distance and power, low resource utilization, high manufacturing cost, etc., and achieve the goal of improving energy efficiency, reducing bit error rate, and improving system energy efficiency Effect

Pending Publication Date: 2020-04-10
HENAN UNIV OF SCI & TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an information transmission method for an environmental backscatter communication system with optimal energy efficiency, and to solve the existing problems of traditional backscatter technology, such as limited communication distance and power, high manufacturing costs, and low resource utilization.

Method used

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  • Environmental backscatter communication system information transmission method with optimal energy efficiency
  • Environmental backscatter communication system information transmission method with optimal energy efficiency
  • Environmental backscatter communication system information transmission method with optimal energy efficiency

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Embodiment Construction

[0035] First, configure the source node with multiple antennas to adopt the method of maximum ratio transmission precoding, that is, the same bit stream is provided to each transmitting antenna after being processed with different weights, and the channel state determines the selection of the transmission weight vector, and the re-encoded signal will be used Send excitation signals to multiple electronic tags / sensors. At this time, the electronic tag is generally in a dormant state to save energy. The electronic tag has a built-in induction antenna and a corresponding circuit, which can absorb the signal of the radio frequency transmission source node and convert it into energy for its own work for storage. When the energy accumulated by the electronic tag reaches a certain threshold, the electronic tag will be awakened and start to communicate. In order to maximize the energy efficiency of the system, the sensor relay node adopts the power split method to collect energy to co...

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Abstract

The invention discloses an environmental backscatter communication system information transmission method with optimal energy efficiency. A communication system relates to the technical field of Internet of Things communication, comprises a multi-antenna source end node, a single-antenna sensor relay node, a single-antenna electronic tag and an information user node, and performs joint optimization on transmitting power, a transmitting antenna and a power distribution factor in the system to obtain an optimal solution, namely an information transmission method with optimal energy efficiency. The method has the advantages that under the energy efficiency maximization criterion, the collected energy can be used for realizing environment backscatter communication long-distance efficient transmission of the future Internet of Things, and compared with a traditional method, environment reflection communication of large-scale sensors / labels is achieved, the system energy efficiency is greatly improved, and the bit error rate is reduced.

Description

technical field [0001] The invention belongs to the technical field of Internet of Things communication, and in particular relates to an information transmission method of an environmental backscatter communication system with optimal energy efficiency. Background technique [0002] With the advancement of information technology and the intelligentization of equipment, people are not satisfied with the communication between people, and the concept of Internet of Things (IOT, Internet of Things) came into being, aiming to realize the connection between people and things, things and things. The Internet of Everything. As a bridge connecting the physical world and human society, the Internet of Things makes it possible for people to interact with everything. Although the rapid development of the Internet of Things and the wide application of radio frequency identification technology have brought a lot of convenience to people's daily life, radio frequency identification techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04W28/16H04W52/02H04B7/155H04B17/336H04B17/391
CPCH04W24/02H04W28/16H04W52/0261H04B7/155H04B17/336H04B17/391Y02D30/70
Inventor 冀保峰陈珍珍陈苏丹李玉琦韩影张雪茹包海东李春国曹翔宇王又可武自鹏张高远马华红韩瑽琤文红
Owner HENAN UNIV OF SCI & TECH
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