Knowledge in qualification for uppsc ro/aro
Abhiyan Civil Services
LIFI Technology
What is LiFi Technology? LiFi is a mobile wireless technology that uses light rather than radio frequencies to transmit data. The technology is supported by a global ecosystem of companies driving the adoption of LiFi, the next generation of wireless that is ready for seamless integration into the 5G core. LiFi Can Overcome the Challenges of RFSpeed & BandwidthLiFi can deliver multiple Gbps speeds in mobile devices. This next generation technology will drive wireless beyond any current capability, opening up unprecedented bandwidth. ReliabilityLiFi provides enhanced reliability enabling interference-free communications and 1000 times the data density, dramatically improving the user experience.Low Latency LiFi currently offers latency by a factor of three times lower than Wi-Fi and can radically enable innovation, automation, and applications such as AR and VR.SecurityLight can be contained, and secured in a physical space. LiFi enables additional control as LiFi offers precise localisation for asset tracking and user authentication. LocalisationLiFi is fully networked, and each LiFi enabled light has it a unique IP address which means advanced geofencing can be deployed simply in a LiFi network.Interference FreeRF is vulnerable to interference from a wide range of devices such as cordless phones, microwaves and neighbouring Wi-Fi networks. LiFi signals can be defined by the area of illumination, which means interference is much simpler to avoid and even stop altogether. This also means LiFi can be used in RF hostile zones such as hospitals, power plants and aeroplanes. How Li-Fi Works?Li-Fi is a VLC (visible light communications) system and the speed of this system is very high. Li-Fi uses normal LEDs to allow the data to transfer and increase the speed up to 224 Gigabits/sec. The data transmission of this technology can be done via illumination. The essential devices of this system are the bright light emitting diodes.The ON/Off activity of LEDs permits a type of data transmission in the form of binary codes but the human eye cannot recognize this transform & the bulbs appear with a stable intensity.Differences between Li-Fi & Wi-Fi The Bandwidth Expansion of Wi-Fi technology is limited and exceptional for Li-FiThe Speed of the Wi-Fi is150 Mbps and >10 Gbps for Li-FiThe Data Density of Wi-Fi technology is low and high for Li-FiThe Range of Wi-Fi is medium and low for Li-FiThe Security of Wi-Fi is medium and excellent for Li-FiThe power availability of Wi-Fi is low and high for Li-FiThe ecological impact of Wi-Fi is medium and low for Li-FiThe cost of the Wi-Fi is medium and low for Li-FiThe network topologies of Li-Fi and Wi-Fi technologies is a point to point Advantages of Li-Fi Speed-The speed of the Li-Fi is very high, and we can watch the videos without buffering.Security- The light of the Li-Fi doesn’t run through the partition, therefore, it is more protected and hacking is not possible.Risk-free-Li-Fi utilizes light waves which are harmless.Consistent- The data transfer is more protected. Disadvantages of Li-Fi Apart from several benefits, the Li-Fi technology is facing several problems. It requires LOS (line of sight), as well as the receiver, would not be a move in inside.The main problem is how the receiver will send the data back to the transmitter section. Another disadvantage of this technology is an interference of exterior light sources such as normal bulbs; sunlight in the lane of communication will cause intermission in the transmission.It doesn’t work in the dim areas. Li-Fi Technology Applications Traffic Management & Road SafetyMedical ApplicationsAviationCommunication UnderwaterElegant LightingInterior map-reading system for blind peopleIn dangerous Environments or In Sensitive regionsTransportationsIndustrial AreasAt present, the concept of Li-Fi technology is attracting a lot of wireless internet users due to its genuine features. Further, it can be explored for laptops; gadgets which can be transmitted through the light in the room by using Li-Fi.
kaushal shah
Quality of water and water treatment
Quality of water and water treatment
Syed Sadique Hussain