LED lighting communication system

A LED lighting and communication system technology, applied in the field of visible light communication, can solve the problems of limited modulation bandwidth, limit the transmission rate of visible light communication, increase the complexity and cost of the system, avoid interference and inter-symbol interference, and improve anti-interference ability Effect

Inactive Publication Date: 2014-09-10
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

At present, many studies hope to increase the transmission rate as much as possible in the limited modulation bandwidth, such as OFDM modulation, MIMO, equalization and other technologies, which will undoubtedly increase the com

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Embodiment Construction

[0037] In order to be able to understand the above objectives, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.

[0038] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the scope of protection of the present invention is not subject to the specific implementations disclosed below. Limitations of cases.

[0039] Some embodiments according to the present invention will be described below with reference to the drawings.

[0040] The LED lighting communication system provided by the present invention, such ...

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Abstract

An LED lighting communication system is composed of a transmitting device and a receiving device. The transmitting device comprises a transmitting main control module, an RGB-PPM modulation module, a pulse shaping module, an RGBLED driving circuit module and an RGBLED light source which are connected in sequence. The receiving device comprises a photodetection module, a signal processing circuit module, an RGB-PPM demodulation module and a receiving main control module which are connected sequentially. Three-path parallel communication is achieved to transmit different messages, the data transmission rate is improved, RGB-PPM modulation is adopted to effectively solve the problems that traditional PPM bandwidth use efficiency is low and pulse lasting time is short, the bandwidth is reduced to 1/4 of 16PPM under the conditions of the same transmission rate (4 bit), the wave length can be selected through the adopted photodetection module, and dual functions of lighting and communication are achieved finally.

Description

Technical field [0001] The invention relates to visible light communication, in particular to an LED lighting communication system of RGB LED visible light communication technology. Background technique [0002] LED has the characteristics of long service life, high luminous efficiency, low cost, small size and fast response speed, and is widely used in daily equipment such as indoor lighting, landscape lighting equipment, traffic lights, and various flat-panel displays. Visible light communication uses LED lighting to communicate at the same time, which increases the added value of lighting and improves economic benefits. [0003] However, how to increase the transmission rate of visible light communication is one of the key technologies to be solved. At present, many studies hope to increase the transmission rate as much as possible in the limited modulation bandwidth, such as OFDM modulation, MIMO, equalization and other technologies, which undoubtedly increase the complexity a...

Claims

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Application Information

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IPC IPC(8): H04B10/116F21S2/00F21Y101/02F21K9/20F21Y115/10
Inventor 陈名松汤玲利汪永辉吴伊雪许笑毛国维
Owner GUILIN UNIV OF ELECTRONIC TECH
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