{"id":128915,"date":"2023-08-05T13:19:41","date_gmt":"2023-08-05T17:19:41","guid":{"rendered":"https:\/\/rbach.net\/?p=128915"},"modified":"2023-08-05T13:19:41","modified_gmt":"2023-08-05T17:19:41","slug":"lifi-can-it-revolutionize-wireless","status":"publish","type":"post","link":"https:\/\/rbach.net\/index.php\/lifi-can-it-revolutionize-wireless\/","title":{"rendered":"LiFi: Can It Revolutionize Wireless"},"content":{"rendered":"\r\n

\"\"LiFi<\/strong> has been standardized by the IEEE<\/a>. They released the 802.11bb standard<\/a> for LiFi in June 2023. LiFi stands for \u201clight fidelity.\u201d Unlike WiFi, which uses radio waves, LiFi uses light waves<\/strong> from LED lamps or other light sources to send and receive data<\/strong>. I first wrote<\/a> about Lifi in 2011. The IEEE started working on the standard in 2018. Standardization at IEEE is a critical step to enable interoperability between multiple vendors. The semiconductor and mobile phone industries are interested in LiFi.<\/p>\r\n

\"LiFi<\/a>Dominic Schulz, lead of LiFi development at Fraunhofer HHI<\/a>, told Fierce Wireless<\/em><\/a> that LiFi offers high-speed mobile connectivity in areas with limited RF. He says it can be used in “fixed wireless access, classrooms, medical and industrial scenarios, complementing or serving as an alternative to Wi-Fi and 5G.” <\/em><\/p>\r\n

How LiFi works<\/h3>\r\n

LiFi works by modulating the intensity of light emitted by an LED lamp at very high speeds. Switching the LED on creates a logical 1<\/span>, and switching the LED creates a logical 0<\/span>. These signals are imperceptible to the human eye. The modulated light signals are then detected by a photodiode device<\/a>, such as a smartphone camera or a dongle, that converts them back to electrical signals. The process is bidirectional, meaning that data can also be sent from the device to the lamp using infrared light.<\/p>\r\n

\"How<\/a><\/p>\r\n

The benefits of LiFi<\/h3>\r\n

LiFi has several advantages over WiFi, such as:<\/p>\r\n