Bluetooth and WIFI both belong to wireless communication network standards. They are similar in that they both work in the ISM 2.4GHz public band.
1. The full name of WIFI is Wireless Fidelity, also known as 802.11b standard, its biggest advantage is that it allows electronic devices to connect to the LAN and high transmission speed, usually using the 2.4G UHF ISM video band, connected to the network is generally password-protected, but also easy to be cracked through technical means.
2. The biggest advantage of WiFi is the high transmission speed, which can reach 11Mbps, in addition to its effective distance is also very long, and also compatible with the existing various 802.11DSSS devices.
3. Bluetooth (Bluetooth® ) is a wireless technology standard that enables short-range data exchange between fixed devices, mobile devices, and building personal networks (using UHF radio waves in the ISM band of 2.4~2.485GHz).
4. Bluetooth technology radio wave coverage range is very small, the radius is only about 50 feet about 15 meters, while the radius of WiFi is up to about 300 feet about 90 meters, in the home or office needless to say, with the development of WiFi technology, some WiFi can cover the entire building.
5. From the practical examples in life can also see that Wifi wireless networks are mainly generated by routers or wireless network cards, wireless AP, the distance of transmission speed is very limited, so it is generally only used by households or general small and medium-sized enterprises.
6. Bluetooth uses a frequency hopping spread spectrum method, which generally hops 1650 times per second, dividing the 83.5MHz band into 79 band channels, while each moment occupies only 1MHz of bandwidth.
7. The modulation method is GFSK, classic Bluetooth is able to simultaneously data and voice wireless communication, and Bluetooth transmission bandwidth is 1Mbps, his communication distance is generally 10 meters, in May 2016 launched the latest version of Bluetooth5.0 transmission distance can reach 150 meters.
8. Bluetooth communication is mainly used to connect some external electronic devices or close-range data transmission.
9. The connection protocol used by WIFI is IEEE802.11b LAN protocol, the transmission range of WIFI is 120 meters, the maximum transmission speed can reach 11Mbps, the use of direct sequence spread spectrum and QPSK or BPSK, the upper and lower bandwidth is 22MHz.
10. It can mainly provide wireless Internet service, so WIFI is often found on top of smart devices that need to be networked.
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