Subject : Embedded Systems Design

Topic : Embedded Serial Communication

Difficulty level : Medium

i) Wireless- Fidelity is the popular wireless communication technique for networked communication devices.

ii) It follows 802.11 standards. It supports Internet Protocol (IP) communication.

iii) Here, each device is identified by its IP address.

iv) Wi-Fi based communication requires Wi-Fi agent called router/ wireless access point to manage communication. Router is responsible to access network, assign IP address to devices on the network.

v) Wi-Fi enabled devices contain wireless adaptor for transmitting and receiving data in the form of radio signals through an antenna.

vi) The hardware part is known as Wi-Fi radio.

vii) Wi-Fi operates at 2.4 GHz or 5 GHz of radio spectrum. Wi-Fi supports data rates 1 mbps to 150 mbps. The operating range is 100 to 300 feet.