LED lighting widely used

LED lighting is widely used, and at the same time give the basic functions of LED, it can also be used for wireless communications. Li-Fi proves that it is more secure and more efficient than RF communication, and it is easier to install than optical fiber. The LED chain is unrestricted, can be connected with many mobile devices, and is independent of any host.

Although 3G, LTE and 4G wireless communication technology has been in progress, but also the more obvious crisis: the lack of RF enough bandwidth to support data transmission demand growth, were called the so-called spectral contraction (SpectrumCrunch). To this end, visible light communication (Li-Fi) provides an economical solution. LED lighting is widely used, and at the same time give the basic functions of LED, it can also be used for wireless communications. Li-Fi proves that it is more secure and more efficient than RF communication, and it is easier to install than optical fiber. The LED chain is unrestricted, can be connected with many mobile devices, and is independent of any host.

LED lighting widely used

Using LED as a transmitter to improve the data rate makes the service based on the Li-Fi concept better than other communication modes. This technology can optimize the spectral efficiency and power efficiency by providing an innovative mediation data frame (composingdataframe), which can be transmitted by means of a non-polar signal. The data frame (share a single frequency band) used in the special structure and encoding algorithm in synchronous transmission, the frame is in a visible light communication chain, and successfully used in the transmitter decoding symmetry separated. This new approach can be used in any density modulation transmission medium (direct detection), and can reduce intersymbol interference, and improve the spectral efficiency.

Examples of data display, in a series of given sizes (such as a data frame given in the code, digital) spectral efficiency two times, so with the standard ACO-OFDM, PAM-DMT and U-OFDM compared to greatly enhance the data rate and spectral efficiency in a similar situation, it is more than DCO-OFDM the advantages of 2dB.

Key benefits:

1, at a given data rate, can reduce power requirements, while improving the overall system performance.

2, data transmission rate increased nearly 2 times.

3, high data rate Li-Fi with flexibility and consistency.