some points about li-fi... like Tech Pathshala for such updates Features Li-Fi offers a number of key benefits over Wi-Fi but is inherently a complementary technology. Capacity Bandwidth: The visible light spectrum is plentiful (10,000 more than RF spectrum), unlicensed and free to use. Data density: Li-Fi can acheive about 1000 times the data density of Wi-Fi because visible light can be well contained in a tight illumination area whereas RF tends to spread out and cause interference. High speed: Very high data rates can be achieved due to low interference, high device bandwidths and high intensity optical output. Planning: Capacity planning is simple since there tends to be illumination infrastructure where people wish to communicate, and good signal strength can literally be seen. Efficiency Low cost: Requires fewer components than radio technology. Energy: LED illumination is already efficient and the data transmission requires negligible additional power. Environment: RF transmission and propagation in water is extremely difficult but Li-Fi works well in this environment. Safety Safe: Life on earth has evolved through exposure to visible light. There are no known safety or health concerns for this technology. Non-hazardous: The transmission of light avoids the use of radio frequencies which can dangerously interfere with electronic circuitry in certain environments. Security Containment: It is difficult to eavesdrop on Li-Fi signals since the signal is confined to a closely defined illumination area and will not travel through walls. Control: Data may be directed from one device to another and the user can see where the data is going; there is no need for additional security such as pairing for RF interconnections such as Bluetooth.
Posted on: Wed, 06 Nov 2013 08:27:46 +0000
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