【 Weak current College 】 Bluetooth and similar wireless transmission technology introduces 】

Bluetooth and wireless transmission technology to introduce similar
Bluetooth (Bluetooth) is an ongoing development process of short range wireless transmission technology, there are still several similar technology and Bluetooth, but shall not constitute a serious threat. These technologies include: IrDA (InfraredDataAssociation infrared wireless data transfer technology) ... Bluetooth (Bluetooth) is an ongoing development process of short range wireless transmission technology, there are still several similar technology and Bluetooth, but shall not constitute a serious threat. These technologies include: IrDA (InfraredDataAssociation infrared wireless data transfer technology), Home/SWAP (wireless LAN), IEEE802.11 (a wireless Ethernet standards). Bluetooth is a point-to-multipoint wireless voice and data transmission technology, use 2.4GHz. Transmission range from 10 cm to 10 meters, if you increase the transmission power, transmission range of up to 100 meters. The main advantages are: support for multiple devices, you can walk through walls and portfolio data, omnidirectional transmission, built-in security. IrDA is a point to point transmission range, narrow angle (30 ° cone angle) standard of data transmission, transmission distance is less than 1 m, the transfer speed at 4Mbps to 16Mbps. IrDA's use has spread worldwide, and currently has more than 50 million units built-in infrared functionality, you can imagine this is the maximum for Bluetooth, but the competitive advantage of various technologies. IrDA advantage is: get a larger range of hardware and software platform support; replaced point-to-point cable, standard with backward compatibility, does not interfere with other electronic devices (due to narrow-angle range transmission). HomeRF/SWAP (sharedwirelessaccessprotocol), is designed to do the work for wireless local area network, use the frequency of the transmission range 2.4GHz over 100 meters, the data transfer rate of up to 2Mbps. This technique uses several protocol support voice channel and with IEEE802.11 transmits data, so it's high cost than Bluetooth technology. IEEE802.11 wireless Ethernet runs at 2.4GHz, used to improve and ensure network interoperability between the entry point. Coverage is large enough to constitute a metropolitan area networks, data transfer rate of up to 11Mbps. Nevertheless, this technology could not compete with Bluetooth technology, because it does not support voice transmission and cannot be used for cellular phone (because power consumption is very large). So far, it seems that only the IrDA is a strong opponent of Bluetooth. Two technologies are available for mobile phones, pagers, modem, LAN access device, headphones, computer. In a scope, if there is a variety of electronic devices exist, IrDA is the use of the best wireless transmission technology, because it's transmission range narrow-angle, can reduce interference to other devices. However, as more new Bluetooth products on the market, consumers will find Bluetooth technology will give their life more simple.