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Wifi vs Bluetooth

rishi2628

If WiFi and Bluetooth both work on a frequency of 2.4 GHz then why does WiFi have a far better data transfer rate as compared to Bluetooth? I am asking this on the basis of WiFi-Direct Technology that is used in smartphones.The data transfer rate for WiFi is in Mbps while in Bluetooth it is in Kbps.

  • Hi

     

    Bluetooth is more focused on low-power, short range and small code footprint (to be integrated in devices with limited hardware capabilities). That's why it has a lower datarate compared to a Wifi connection

  • You can gain much understanding if you look at the history of WiFi and Bluetooth. Wifi is a Wireless LAN, so it's being used to connect networks of computers together. This requires a high data rate. Bluetooth was designed for PAN or personal area networks, initially as cable replacement (RS232), so it was never required to have high data rates. However, I notice you mention the frequencies; Bluetooth uses a frequency hopping scheme to achieve it's connection/transfer, and the most popular WiFi uses OFDM (Orthogonal Frequency Division Multiplexing). I.e. they send data using different modulation schemes.