Ultra wide band is a carrier free base band technology used in wireless communications especially in Radar applications. It can provide high data transfer in multi-user network. The technology uses the carrier free band without RF carrier to prevent signal interferences. The technology is highly reliable since it has very high resolution within centimeters. It also has precision distance and positioning measurement capabilities.
Ultra wide band technology or UWB Technology is implemented in governmental and commercial agencies for easy and fast data transfer without much interference. Applications such as Network radio, radar systems, geo locators, unmanned vehicles, high speed LAN and WAN, RF monitors uses ultra wide band frequencies to achieve good results.

Ultra wide band technology uses short duration pulses that range from a few tens of picoseconds to a few nano seconds. A pulse has several cycles and the resulting waveform will have a central frequency of 1.5GHz. The system is suitable for wireless transmission due to its high speed and short duration waveform. Packet burst and TDMA protocols can be easily implemented in Ultra wide band technology. The band width is inversely proportional to the duration of pulses so that the spectral extent of the waveform can be expanded. Due to its frequency adaptive nature, the system can be easily positioned in the RF spectrum. The ultra wide band technology is a time domain concept because with very short RF pulses generates very high bandwidth signals through time scaling.

Multiple user management of data transfer is achieved by the use of frequency division multiplex and time division multiple access. The band width is generated directly without modulation like hopping pattern or PN coding. The square wave pulses emitted consists of an interval of billionth of a second. An individual pulsecan be transmitted with a peak power of 1 watt. This energy results in the generation of individual pulses across the frequency spectrum ( Noise floor). These pulses can be utilized to carry digital data 0 or 1 at the receiving end. The modulations are decoded in the receiver end to achieve the digital transmission.
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