LED visible light communication will be available next year

January 15, 2020

LED visible light communication and XGPON network will be available next year. After breaking through the technical bottleneck, LED visible light communication and XGPON network have quickly attracted the attention of the market. The former can realize zero electromagnetic wave wireless transmission and add new value to LED lighting system; the latter can provide network transmission speed of up to 10Gbit/s. It will help accelerate the popularity of fiber-to-the-home (FTTH).
The Pandora's box of future communication technology has finally opened. Taiwan Industrial Technology Institute has developed a new light-emitting diode (LED) visible light communication technology and XGPON network. The former uses LED visible light as a transmission medium, and users can perform Internet and video-to-video transmission. The latter can achieve fiber-to-the-home 100 Mbit/s. The technical achievements are very bright. On the other hand, the next-generation Bluetooth 4.x standard will be finalized next year to grab smart home business opportunities.
In the future, using LED lighting to access the Internet or to transfer video and audio files will become a reality. Taiwan Institute of Technology has developed LED visible light communication (VLC) technology, which enables LED lamps to simultaneously achieve lighting, networking or multi-gray high-definition (HD) video and audio transmission. It is expected to be commissioned in Shin Kong Hospital next year. LED lighting application value.
Ye Jianhong, a researcher at the Optical Communication Network Technology Department of the Optical Communication and Broadband Integration Technology Group of the Institute of Industrial Science and Technology of Taiwan Institute of Technology, said that wireless local area networks (Wi-Fi) or other wireless transmissions have electromagnetic waves that may endanger human health or interfere with electronic equipment. Operation, while LED visible light is zero electromagnetic wave, zero-radiation wireless technology, can play in places where other wireless transmissions cannot be used, such as hospitals.
Not only that, because the LED visible light communication must be transmitted when the LED light fixture is turned on, the transmission function will be invalid when the light is turned off, and the light can not be transmitted as long as the curtain light is pulled out, which has the characteristics of a closed network, so the network security level It is higher than other wireless transmission technologies and is also suitable for home use.
In addition, the LED visible light communication technology can also be used in the car brake system. The driver can use the LED lights to send the brake lights to the front lights of the preceding vehicles, which will further control the driving safety.
It is understood that Taiwan Institute of Technology has used white light fluorescent powder (Phosphor) LED to realize LED visible light communication technology, its transmission rate is 1/2Mbit / s, transmission distance is 2 / 3 meters; at this stage Taiwan Institute of Technology has Development of optical transceiver modules, as well as modulation signal, digital signal processing and lens focusing and transmission technology.
Ye Jianhong explained that the operation mode of LED visible light communication is to embed an optical transceiver module in an LED lamp, and to install or externally connect a corresponding optical transceiver module to a receiving device such as a notebook, a smart TV or a smart phone. Achieve two-way communication and receiving functions.
Ye Jianhong further explained that the initial optical transceiver module introduced at the customer premises device will be externally connected, and the LED visible light communication system that will be piloted in the Shin Kong Hospital ward will be Ethernet (Ethernet). Or a power line communication (PLC) network route to connect the optical communication module, so that the wireless transmission mode can be used to access the Internet and perform multi-fire transmission information.
In the future, Taiwan Industrial Technology Institute will also develop a universal serial bus (USB) as a connection interface between the optical receiver module and the client device, which makes it more convenient for users to use the LED visible light communication to access the Internet or transmit audio and video.
Ye Jianhong stressed that the Taiwan Industrial Technology Research Institute plans to process red, green and blue (RGB) three-light mixed white LEDs or other LEDs that are seven to eight times higher than white LEDs in 2/3 years, and then through modulation and digital signal processing. Technology, the LED visible light communication system speed is upgraded to 100Mbit / s, to meet the needs of the home market for high-bandwidth networking, and thus drive the construction boom of the home LED lighting market.
As for the technical transfer mode of the Taiwan Industrial Technology Research Institute and related manufacturers, Liu Yanliang, an engineer of the Optical Communication Network Technology Department of the Optical Communication and Broadband Integration Technology Group of the Taiwan Industrial Technology Research Institute, revealed that the Taiwan Industrial Technology Research Institute is expected to switch to the module factory. The design, as well as the orthogonal frequency division multiplexing (OFDM) chip maker or Netcom system plant technology transfer technology, and the latter will be the role of integrated lighting, modules in the future, to promote LED visible light communication system to the user.

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