A Hybrid Communication Method Based on Visible Light Energy Harvesting and Radio Frequency Backscattering

A backscattering and energy harvesting technology, applied in wireless communication, short-distance systems, power management, etc., can solve problems such as insufficient radio frequency spectrum resources, restrictions on the development of wireless data communication technology, and limited bandwidth

Active Publication Date: 2021-02-02
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0002] In today's society, the demand for wireless data transmission is increasing, but the problems of insufficient radio frequency spectrum resources and limited bandwidth limit the development of wireless data communication technology to a large extent.

Method used

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  • A Hybrid Communication Method Based on Visible Light Energy Harvesting and Radio Frequency Backscattering
  • A Hybrid Communication Method Based on Visible Light Energy Harvesting and Radio Frequency Backscattering
  • A Hybrid Communication Method Based on Visible Light Energy Harvesting and Radio Frequency Backscattering

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Embodiment Construction

[0091] The symbols are defined as follows: R M is the size of the room radius, R S is the radius of the lighting equipment coverage, H is the height of the indoor ceiling, is the distance between the outdoor macro base station and the indoor user, is the distance between the indoor user and the outdoor target user, λ u is the distribution density of indoor users, λ v is the distribution density of indoor lighting equipment, P M is the transmit power of the outdoor macro base station, P U is the transmission power for indoor users to transmit information to outdoor target users, the energy conversion efficiency ρ and η are both set to 0.5, the path loss coefficient α is set to 3, the noise power α is set to 1e-10, and the SINR threshold is set to 1e-2.

[0092] The present invention provides a hybrid communication method based on visible light energy collection and radio frequency backscattering, which uses lighting equipment to transmit visible light energy to users cov...

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Abstract

The invention discloses a hybrid communication method based on visible light energy collection and radio frequency backscattering. A lighting device simultaneously transmits information and energy of visible light to a user who can receive light from the lighting device. The user collects the visible light energy and performs information translation. Code, to obtain the data transmission interruption probability of the visible light communication process; calculate the total visible light power collected by indoor users from multiple lighting devices covered, and determine the communication mode for indoor users to transmit radio frequency to the outdoor; indoor users use point-to-point radio frequency communication technology to transmit the information to be transmitted to outdoor users; or indoor users use backscatter technology to carry the information to be transmitted to the RF signal in their environment, and then backscatter and transmit it to outdoor users; and the data transmission interruption probability of the backscatter communication method to complete the communication. The invention alleviates the problem of the shortage of radio frequency spectrum resources and the interference between radio frequency transmission systems, and improves the transmission rate.

Description

technical field [0001] The invention belongs to the technical field of wireless energy supply communication, and in particular relates to a hybrid communication method based on visible light energy collection and radio frequency backscattering. Background technique [0002] The demand for wireless data transmission in today's society is increasing day by day, but the problems of insufficient radio frequency spectrum resources and limited bandwidth limit the development of wireless data communication technology to a large extent. However, the visible light band spectrum resources are abundant and mostly unused, and the high frequency of visible light also makes it less limited by the bandwidth, and does not require special configuration (directly use the energy collected from the light emitted by indoor lighting equipment for data transmission, no need Like radio frequency communication, base stations and energy beacons need to be set up), the channel capacity is large and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/116H04W52/14
CPCH04B10/116H04W52/14
Inventor 张超褚镭郦
Owner XI AN JIAOTONG UNIV
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