Bluetooth technology products use low-energy radio communication technology to achieve voice, data and video transmission, the transmission rate is up to 1Mb / s per second, full-duplex communication in time division mode, communication distance is about 10 meters, configure power amplifier The communication distance can be further increased.
Bluetooth products use frequency hopping technology to resist signal fading; fast frequency hopping and short packet technology can effectively reduce co-channel interference and improve communication security; use forward error correction coding technology for long-distance communication Reduce the interference of random noise; use 2.4GHz ISM (ie, industrial, scientific, medical) frequency band to save the trouble of applying for a special license; use FM modulation to make the device more simple and reliable; "Bluetooth" technology The product transmits a synchronization packet with one frequency hopping frequency, one packet per group occupies one time slot, and can also be increased to 5 time slots; "Bluetooth" technology supports one asynchronous data channel, or three concurrent synchronous voice channels, or one simultaneous A channel that transmits asynchronous data and synchronized speech. Each voice channel of "Bluetooth" supports 64Kbps synchronous voice, the asynchronous channel supports a maximum rate of 721Kbps, a reverse connection rate of 57.6Kbps asymmetric connection, or a 432.6Kbps symmetric connection.
The communication between the Bluetooth technology products and the Internet Internet enables home and office equipment to be interconnected without cables, which greatly improves office and communication efficiency. Therefore, "Bluetooth" will become the new darling in the field of wireless communication, and will be greatly favored by the users.