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Ultra-wideband (UWB) and Bluetooth SIG's Bluetooth are regarded as almost-siblings in the industry, since Bluetooth personal area network (PAN) connectivity and UWB both are 'designed to replace cables with short-range, wireless connections,' but UWB makes available the much higher bandwidth required for supporting multimedia data streams at extremely low power levels. UWB can also communicate relative distance and position, which makes UWB usable for tracking devices, containers, and other objects. At a technology demonstration, Freescale Semiconductor put a UWB device on display that transmitted at a data rate of 110Mbit/second at a range of up to 10 meters. That bandwidth, which is 100 times faster than Bluetooth with double the capacity of the best-performing Wi-Fi nets, can send three concurrent video streams over one UWB connection. Vendors plan to offer UWB products supporting speeds as fast as 1Gbit/second. The first products with UWB chips are expected to be in home theater applications and should arrive in 2005. Business applications, when they arrive, will depend on UWB to replace the Universal Serial Bus (USB) standard, says an analyst. The analyst says 'UWB is a guaranteed win,' and that 50 companies are making UWB chips, including Intel. However, a standard has not yet been agreed upon, and Intel and Motorola have different ideas as to what that standard should be. Among topics covered are standards being considered, including Multiband OFDM and DS-UWB, IEEE 802.11n, IEEE 802.15.3a, and cost factors.
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