IoT Technologies: Wi-Fi, Cellular, Bluetooth, RFID, SigFox, Lora

This lecture delves into various IoT technologies such as Wi-Fi, cellular, Bluetooth, RFID, SigFox, and Lora, explaining how they differ in data rates and ranges, and why certain technologies are preferred for specific applications. The focus is on Lora, a low power wide area network, and its unique chirp spread spectrum communication scheme. The lecture also covers RFIDs, detailing how they work without batteries, their low power consumption, and the different types of RFIDs. The encoding methods used in RFIDs to maximize energy harvesting and achieve different data rates are also discussed.