Ultra Wide Band (UWB) technology
UWB, which spreads electrical power over an extremely broad range of radio frequency, is a wireless technology using low power density for communications as well as for ranging and positioning applications. Because it uses low power and overlapped frequencies, it is attracting attention as a technology that can coexist with other wireless systems. UWB is generally divided into two frequency bands: UWB lower band (3.1-4.8 GHz, except in Japan, where it is 3.4-4.8 GHz) and UWB upper band (6.0-10.6 GHz, except in Japan, where it is 7.25-10.25 GHz).
 Impulse radio UWB (IR-UWB) technology
Impulse radio UWB technology is known for its ability of ranging with high precision. Within UWB, there is the impulse radio (IR) method and the multiband OFDM method. IR-UWB uses extremely short pulses on the order of nanoseconds. Because a nanosecond pulse provides very precise time resolution, ranging with an error of less than 30 centimeters is available by measuring the pulses. It is possible to raise theranging precision even further by taking some processing such as increasing the number of measuring before give a result.
 Smartphone mapping application
The application manages the UWB positioning system's mobile station and the smartphone's Bluetooth connection, and, based on the positioning data received from the mobile station, displays the current location on the screen and performs an audio reading of the location information.
 TELEC certification
Telecom Engineering Center (TELEC) provides certification for the use of UWB, such as the spectral density emission limit for UWB systems, the frequency band that is allowed to be used, and the minimum data rate. Only UWB systems that satisfy all the requirements in Japan's radio regulaionsare allowed to be used without a license. TELEC is an organization that verifies and certifies whether wireless systems conform with the radio regulations, and UWB systems receiving TELEC certification can be used without a license.
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Date: 02 July, 2012
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