Researchers at the University of Oxford have reached a new milestone in networking by using light fidelity (Li-Fi) to achieve bi-directional speeds of 224 gigabits per second (Gbps). The technology uses LED-based room lighting instead of radio waves to transmit data. This is being developed as a potential alternative to Wi-Fi, and because it uses visible light spectrum to transmit data.
The link operates over ~3 m range at 224 Gb/s (6 x 37.4 Gb/s) and 112 Gb/s (3 x 37.4 Gb/s) with a wide field of view (FOV) of 60° and 36°, respectively. The emerging technology has the potential to provide low-cost wireless internet more securely in localized areas, given that light is unable to pass through walls.
According to Harald Haas is Professor and the Chair of Mobile Communications at the University of Edinburgh. He pioneered ‘Spatial Modulation’ which is one of the principals of Li-Fi technology.
- settings where secure data exchange is paramount such as hospitals, company headquarters, homeland security agencies.
- modern manufacturing plants where hundreds of tools and machines require constant and reliable connection to central servers. This ‘Internet-of-Things’ also has many new applications for homes and offices that will for example improve energy efficiency.
- intrinsically-safe environments such as refineries, oil platforms or petrol stations where electro-magnetic radiation of the antennas of radio frequency communication systems could spark explosions.
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