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A ppm-based transmitter, receiver and visible light communication system

A technology for sending and receiving ends, applied in transmission systems, short-distance systems, electromagnetic wave transmission systems, etc., can solve the problems of electromagnetic radiation and interference, frequency authorization, etc., to eliminate electromagnetic radiation and interference, small structure, break Effects of radio spectrum restrictions

Active Publication Date: 2020-03-10
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The development of wireless communication technology enables people to access the Internet anytime and anywhere, and obtain networking information more quickly. However, the communication method using radio waves as a transmission carrier has certain shortcomings, such as frequency authorization, electromagnetic radiation and interference, etc.

Method used

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  • A ppm-based transmitter, receiver and visible light communication system
  • A ppm-based transmitter, receiver and visible light communication system
  • A ppm-based transmitter, receiver and visible light communication system

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Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For the step numbers in the following embodiments, it is only set for the convenience of illustration and description, and the order between the steps is not limited in any way. The execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art sexual adjustment.

[0036] In the embodiment of the present invention, if the output data is "1", it means output high level, and if the output data is "0", it means output low level.

[0037] In order to solve the shortcomings of the traditional communication method using radio waves as the transmission carrier and meet the development needs of wireless communication, the present invention designs a visible light communication system, and the communication modulation method used is PPM (PulsePosition Modulation), that is, the pulse posi...

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Abstract

The invention discloses a transmitting end, receiving end and visible light communication system based on PPM. The transmitting end comprises a PPM coding module, a transmitting circuit and an LED; and the output end of the PPM coding module is connected with the input end of the LED through the transmitting circuit. The receiving end comprises a photoelectric conversion module, a receiving circuit and a PPM decoding module, the output end of the photoelectric conversion module is connected with the input end of the PPM decoding module through the receiving circuit. The visible light communication system comprises a sending end and / or a receiving end. By adopting the communication scheme, the defect that a traditional communication mode taking radio waves as a transmission carrier is overcome, the limitation of the radio frequency spectrum is broken, the data transmission rate is increased, electromagnetic radiation and interference are eliminated, and the development requirements of wireless communication can be met. According to the invention, the transmitting end, the receiving end and the visible light communication system based on PPM can be widely applied to the field of wireless communication transmission.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a PPM-based sending end, receiving end and visible light communication system. Background technique [0002] Explanation of technical terms: [0003] PPM: Pulse Position Modulation, pulse position modulation. [0004] The development of wireless communication technology enables people to access the Internet anytime and anywhere, and obtain networked information more quickly. However, the communication method using radio waves as a transmission carrier has certain shortcomings, such as frequency authorization, electromagnetic radiation and interference. With the advent of the information age, the importance of wireless high-speed data transmission is increasing, and the radio frequency spectrum currently used for communication is limited, so researching more advantageous wireless transmission technology is one of the problems that need to be solved urgently...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/116H04B10/524
CPCH04B10/116H04B10/524
Inventor 王德明温竞豪黄鑫王剑莹
Owner SOUTH CHINA NORMAL UNIVERSITY
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