Visible light communication receiving method and system based on neural network

A technology of visible light communication and neuron network, which is applied in the field of visible light communication receiving method and its system, can solve the problems of no data optimization processing and different merging methods, and achieve the effects of reducing bit error rate, increasing capacity, and eliminating inter-symbol interference

Active Publication Date: 2015-11-25
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

However, due to the time-varying and random nature of the wireless channel, the combination methods selected in different environments are different; and the received data is the original data disturbed in the channel, and the data is not further optimized.

Method used

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  • Visible light communication receiving method and system based on neural network
  • Visible light communication receiving method and system based on neural network
  • Visible light communication receiving method and system based on neural network

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Embodiment

[0038] Such as figure 1 As shown, a visible light communication system based on neuron network. Including: transmitting subsystem, transmitting subsystem, receiving subsystem. In the transmitting subsystem, the camera receives a real-time video signal and transmits it to the first liquid crystal display through the first programmable gate array; the first liquid crystal display shows the original video signal; After the video signal is modulated and processed with corresponding video signal processing technology, it is transmitted to the LED drive circuit; the LED drive circuit drives the LED lamp to emit visible light signals. Such as figure 2 As shown, it is a schematic diagram of the LED driving circuit. Through the T-type combination of the capacitance and the inductance of the BiasTee structure, the coupling of the DC signal and the AC signal is realized to ensure that the signal will not be lost in the LED.

[0039] Further, the optical signal reaches the receiving s...

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Abstract

The invention discloses a visible light communication receiving method based on a neural network. The method comprises the following steps: 1, a first programmable gate array converts a video signal sent by a signal source into a digital signal; 2, the digital signal drives an LED lamp to emit a light signal via an LED driving circuit; 3, the light signal goes into a receiving subsystem via n photoelectric detectors; 4, the n data streams are transmitted to a trained neuron combination module; and 5, the neuron combination module performs balancing processing on the n data streams and outputs a combined data stream that is demodulated and converted into a video signal by a second programmable gate array. The invention also discloses a visible light communication receiving system for realizing the visible light communication receiving method based on the neural network; the system comprises a transmission subsystem, a transmission subsystem and the receiving subsystem. The visible light communication receiving method has the advantages of favorable application prospect and the like.

Description

technical field [0001] The present invention relates to visible light communication technology, in particular to a neuron network-based visible light communication receiving method and system thereof. Background technique [0002] Compared with traditional infrared and wireless communication, LED visible light communication technology has the advantages of high transmission power, no electromagnetic interference, no need to apply for spectrum resources and confidentiality of information. However, visible light communication still faces many challenges, one of the biggest challenges is that inter-symbol interference greatly limits the data transmission rate of visible light communication systems. White LEDs used for lighting are generally in the form of LED arrays. Different point light source LEDs correspond to different optical paths, and the delay in signal transmission between optical paths will cause inter-symbol interference; at the same time, when the system data trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/116
Inventor 文尚胜关伟鹏张恒张广慧
Owner SOUTH CHINA UNIV OF TECH
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