LED visible light communication network structure and front-end subsystem
A visible light communication and subsystem technology, applied in short-distance systems, free space transmission, etc., can solve problems such as difficult to achieve large-capacity, long-distance, no-blind zone communication, and achieve the effect of improving communication distance
Inactive Publication Date: 2020-02-28
安徽中骄智能科技有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide LED visible light communication network structure and front-end subsystem, through the role of physical layer, medium access control layer, security layer, network layer and application layer, it solves the problem that the existing LED visible light communication system is difficult to achieve large capacity , long-distance, no blind zone communication problems
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[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0025] see figure 1 As shown, the present invention is an LED visible light communication network structure and a front-end subsystem, including an LED light emitting module, an LED light receiving module, a vector signal generator and an oscilloscope; Send to the LED light receiving module;
[0026] The vector signal generator is connected with the LED light emitting module; the LED light emitting module is powered by a DC power supply; the LED light emitting mod...
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The invention discloses an LED visible light communication network structure and a front-end subsystem, and relates to the technical field of wireless communication. The device comprises an LED lightemitting module, an LED light receiving module, a vector signal generator and an oscilloscope. The LED light emitting module amplifies the electric signal and then sends the electric signal to the LEDlight receiving module; the vector signal generator is connected with the LED light emitting module; the LED light emitting module sends a light signal and receives the light signal through the LED light receiving module; the oscilloscope is connected with the output end of the LED light receiving module; the LED light emitting module comprises an LED chip and a driving circuit; the LED light receiving module comprises a photodiode, a transimpedance pre-amplifier and a main amplifier. Through the effects of the physical layer, the medium access control layer, the security layer, the network layer and the application layer, the effects of improving the transmission capacity, reducing multipath interference and intersymbol interference, realizing non-blind area communication and improving the communication distance are achieved.
Description
technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to an LED visible light communication network structure and a front-end subsystem. Background technique [0002] With the rapid development of information and communication technology, the wireless communication system has an increasing demand for wireless data services. However, due to the limited and expensive RF spectrum, wireless transmission technology must be developed. Compared with infrared, free light communication and radio frequency technologies, LED visible light communication does not require spectrum certification. With the advantages of high transmission rate, it can be used as a supplementary function to the existing lighting infrastructure and reduce the pressure on the radio frequency spectrum. It is an emerging technology for end-user access in wireless communication systems. However, although the existing LED visible light communicatio...
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Login to View More IPC IPC(8): H04B10/116
CPCH04B10/116
Inventor 王兴生
Owner 安徽中骄智能科技有限公司