Unlock instant, AI-driven research and patent intelligence for your innovation.

Multi-path visible light communication based scrambling and descrambling system and method

A visible light communication and visible light technology, applied in the field of photonic Internet of Things, can solve the problems of limited flashing frequency of light emitters, limited transmission rate of visible light, etc., and achieve the effect of increasing channel capacity, improving security, and increasing transmission rate

Active Publication Date: 2015-03-11
KUANG CHI INTELLIGENT PHOTONIC TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since this single-channel visible light communication encryption and decryption system has only one visible light emitter and one visible light receiver, and the flickering frequency of the emitter is limited by the drive circuit or the emitter itself, when the drive circuit cannot provide a faster "on- The transmission rate of visible light emitted by the visible light emitter is also limited when the frequency is off

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-path visible light communication based scrambling and descrambling system and method
  • Multi-path visible light communication based scrambling and descrambling system and method
  • Multi-path visible light communication based scrambling and descrambling system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] It is a scrambling and descrambling system based on multi-channel visible light communication provided by Embodiment 1 of the present invention, and the scrambling and descrambling system includes a scrambling system 100 and a descrambling system 200 .

[0036] see figure 1 , is a schematic structural diagram of a scrambling system based on multi-channel visible light communication. The scrambling system 100 includes a first serial-to-parallel converter 11. The input terminal of the first serial-to-parallel converter 11 is used to receive original data (baseband data), and the output terminal is At least two, the specific number is determined by actual needs. Among them, the original data is a digital sequence signal, which is also called baseband data here. The original data enters the first serial-to-parallel converter 11 for serial-to-parallel conversion to become multi-channel signals. The purpose is to convert serial data into parallel processing, which can greatl...

Embodiment 2

[0043] see image 3 , is a schematic structural diagram of a scrambling system based on multi-channel visible light communication provided in Embodiment 2 of the present invention. Compared with Embodiment 1, the scrambling system further includes: the scrambling system 100 also includes The inter-modulator 15 is used to modulate the scrambled signal input by the encoder 12.

[0044] see Figure 4 , is a schematic structural diagram of a descrambling system based on multi-channel visible light communication provided in Embodiment 2 of the present invention. Compared with Embodiment 1, the descrambling system 200 further includes: a descrambling system connected between the visible light receiving unit 21 and the decoder 22 The modulator 25 is used to demodulate the visible light signal received by the visible light receiving unit 21.

Embodiment 3

[0046] see Figure 5 , is a flowchart of a method for scrambling and descrambling based on multi-channel visible light communication provided in Embodiment 3 of the present invention. The method for scrambling and descrambling includes:

[0047] S301: The transmitter performs serial-to-parallel conversion on the original signal to obtain at least two channels of parallel signals.

[0048] For example, using an 8-way communication system, the original signal (baseband signal) is a 32-bit binary serial number sequence 11000101011110000011011011010110, which is divided into 4 channels of signals according to 8 bits, which are 11000101, 01111000, 00110110 and 11010110.

[0049] S302: The transmitting end scrambles each signal by using the first pseudo-code signal that changes with unit time to obtain a scrambled code signal.

[0050] Assume that the first pseudo-code signal is 1101 within T1 unit time. In the first chip time, after the first group of original signals (baseband ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An embodiment of the invention provides a multi-path visible light communication based scrambling and descrambling system and a method. According to the scrambling and descrambling system, a serial-parallel converter is used at a sending terminal to convert original signals into multi-path signals, and pseudo code signals which change with unit time are used for descrambling signals of each path and then are sent in a visible light signal mode; and a receiving terminal receives and descrambles the visible light signals of each path, and the descrambled signals of each path pass through the serial-parallel converter to obtain the original signals. According to the multi-path visible light communication based scrambling and descrambling system and the method, the safety of the visible light signals is guaranteed during communication, and simultaneously, the transmission speed is increased.

Description

【Technical field】 [0001] The present invention relates to the technical field of photonic internet of things, in particular, to a system and method for scrambling and descrambling based on multi-channel visible light communication. 【Background technique】 [0002] Visible light communication is a new, short-distance, high-speed wireless optical communication technology developed on the basis of LED technology. The basic principle of visible light communication is to use the characteristics of light-emitting diodes (LEDs) to switch faster than fluorescent lamps and incandescent lamps, and to communicate through high-frequency flickering of LED light sources. Light represents 1, and no light represents 0, sending out high-speed optical signals. Then the information is obtained through photoelectric conversion. Wireless optical communication technology can be used to make wireless optical encryption keys because its data is not easy to be interfered and captured, and optical co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/114H04B10/116H04B10/524
Inventor 刘若鹏栾琳肖光锦
Owner KUANG CHI INTELLIGENT PHOTONIC TECH