Abstract
In the nearest decades, the rapidly increasing demand of wireless connectivity has resulted in the ubiquitous deployment of wireless systems as well as heavily congested wireless spectrum. Owing to the various inherent advantages, such as spectral and bandwidth relief, no healthy concern, high security, low cost, and low interference with Radio Frequency (RF) waves, visible light communication (VLC) has been an emerging optical wireless data transmission approach that can act as a good complement to and substitute for Radio Frequency. How to achieve a high-speed data transmission is a key problem to be solved in the VLC system. This review mainly focuses on the enabling technologies for high-speed VLC systems, including novel transmitter architectures, blue filters and advanced modulation, and equalization technologies. And the inherent advantages, potential applications, and some issues of VLC that need further study are presented as well. Finally, a comprehensive survey on the recent developments and the key contributions by research groups involved in the field of high-speed VLC is provided.
Highlights
Visible Light Communication (VLC) is an emerging optical wireless data transmission approach that using visible lights as the signal carriers
This review mainly focuses on the enabling technologies for high-speed visible light communication systems
As visible light communication (VLC) has numerous inherent advantages and wider application areas when compared to the traditional wireless communication systems, it has drawn much attention from research institutes and companies worldwide, and great development have been achieved as a result
Summary
Visible Light Communication (VLC) is an emerging optical wireless data transmission approach that using visible lights as the signal carriers. The history of Visible Light Communication could be traced back to the 1880s, when Alexander Graham Bell developed a photophone by modulating sunlight This invention even pre-dates the transmission of voice data by radio. In a LED-based VLC system, information is transmitted by modulating the intensity of LED at a rate much faster than the response time of the human eyes, which offers simultaneous illumination and high-speed data transmission. It is regarded as an economic, secure, and ubiquitous data transmission solution, especially a perfect last-mile solution in the future [2].
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