Wireless internet has become an essential part of our daily lives, supporting activities like communication, browsing, and streaming. However, the increasing demand for wireless access leads to higher power consumption and carbon emissions worldwide.
To address this issue, researchers are working on energy-efficient techniques for communication, such as visible light communication (VLC). A team of researchers from Central University (CU), IIDM, and CU J&K in India has developed a hybrid system that combines VLC with RF communication. This system, as described in their paper published in IEEE Transactions on Green Communications and Networking, aims to provide reliable communication with high data transmission rates indoors while consuming less energy.
The proposed system consists of a transmitter and a receiver module connected via a VLC channel. The transmitter sends binary data through LED-produced light, utilizing modulation schemes to maintain a constant power consumption. The receiver, equipped with a photosensitive device, extracts information from the transmitted light.
Simulation results show that this hybrid RF-VLC system offers stable communication indoors with significant energy savings. The system achieves high energy efficiency, lower power density, and extended battery life for mobile devices. This research contributes to the development of energy-efficient wireless communication networks, paving the way for greener and safer technologies in the future.
