藍牙語音傳輸外文翻譯-其他專業(yè)(編輯修改稿)
2025-02-24 02:32 本頁面
【文章內(nèi)容簡介】 it or individual can be the development of Bluetooth products, as long as the final product by the Bluetooth SIG pliance testing to connect to the market. Many manufacturers have manufactured have Bluetooth products, the future of Bluetooth technology will be more mature and function will be more powerful. Bluetooth is an open, short distance wireless munication technology standard that can be used in a smaller range of a wireless connection means to achieve the fixed equipment, and interconnection between mobile devices, can be flexible between various digital devices , Safety, low cost, small power consumption of audio and data munication. Because Bluetooth technology can be easily embedded into a single chip, so it is especially suitable for small mobile munication devices. Bluetooth carrier frequency used globally 2. 4GHz ISM industrial, scientific, medical) band, the 2. 4GHz ISM band is open to all radio frequency systems, the use of any one frequency band are likely to encounter unpredictable Sources of interference. Using frequency hopping spread spectrum technology is an effective measure to avoid interference. Band frequency hopping is to be divided into a number of frequency hopping channels in a connection, the radio transceiver according to a certain code sequence and continuously from one channel to another channel, the two sides is the only transceiver to municate according to the law, while others Sources of interference can not be carried out by the same laws of interference. Instantaneous bandwidth of frequency hopping is very narrow, but through spread spectrum technology to make this into a narrow bandwidth to expand into broadband times, so that the impact of interference may bee very small. Bluetooth uses frequency hopping spread spectrum technology is one of the key. Corresponds to the singleslot packet, the Bluetooth frequency hopping rate of 1600 hop / sec。 corresponding slot bag, hopping rate is reduced。 in 3200 to establish the link to raise the jump / sec. Such a high rate of use of frequency hopping, Bluetooth system has a sufficiently high antiinterference ability. It uses the butterfly as the core of multilevel mapping program, pared with other programs, with a hardware device is simp
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