Data transmission method and device, data reception method and device and transmission system for visible light communication
A data transmission method and visible light communication technology, applied in the field of optical communication, can solve problems such as no solution proposed, and achieve the effect of improving data throughput and data transmission efficiency
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Embodiment 1
[0031] figure 1 This is a flowchart of a method for transmitting data in visible light communication according to Embodiment 1 of the present invention. Such as figure 1 As shown, the method includes:
[0032] Step S102: Map a data stream to be sent into a multi-layer signal;
[0033] Step S104, the multi-layer signal is transmitted to the optical emission source module corresponding to the multi-layer signal for transmission.
[0034] Through the above processing procedure, since the data stream to be sent is sent hierarchically (that is, hierarchical signals are sent in parallel), the data transmission efficiency is improved.
[0035] In step S102, there are many ways to map a data stream into a multi-layer signal. For example, it can be implemented in the following way: after a single data stream is encoded and modulated, it is divided into n (n is a positive integer) layer signals. , Enter the n emission branches, and finally transmit the layered modulation signal through the opt...
Embodiment 2
[0045] This embodiment corresponds to Embodiment 1, and is explained from the receiving side of the optical signal. Figure 4 It is a flowchart of a method for receiving data in visible light communication according to Embodiment 2 of the present invention. Such as Figure 4 As shown, the method includes:
[0046] Step S402: Receive the multi-layer signals sent by each optical emission source module, where the multi-layer signals are obtained by mapping a data stream to be sent by the sending side of the multi-layer signal;
[0047] Step S404: Combine the foregoing multi-layer signals into the foregoing data stream.
[0048] Through the above processing steps, since the above layered signals can be received hierarchically, the data receiving efficiency of visible light communication is improved, and the data transmission efficiency is further improved.
[0049] As in Embodiment 1, in this embodiment, each layer signal in the multi-layer signal can also have a one-to-one correspondence...
Embodiment 3
[0056] This embodiment provides a data transmission system for visible light communication, such as Image 6 As shown, the system includes:
[0057] The layer mapping module 60 is connected to the optical emission source module 62, and is used to map a data stream to be sent into a multi-layer signal;
[0058] A plurality of light emitting source modules 62 are connected to the light receiving module 64, and are used to convert multi-layer signals into optical signals for transmission. It should be noted, Image 6 For the convenience of description, only one light emitting source module 62 is shown in connection with related modules. However, the light emitting source module 62 is not limited to one. When there are multiple light emitting source modules 62, the connection between it and related modules The connection method is the same.
[0059] A plurality of light receiving modules 64 are connected to the detecting module 66 and used to respectively receive the light signals sent ...
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