How is UWB different from the frequency hopping used in Bluetooth? Explain.
What will be an ideal response?
The difference between UWB and Bluetooth networks is that UWB systems operates across a wide range of frequency spectrum by transmitting a series of extremely narrow and low power pulses. Therefore, essentially, the whole frequency spectrum is used by the transmitter and the data is sent in bursts. We have a burst of data across the channel and then for some time period there is no data transmission. On the other hand, Bluetooth employs frequency hopping for data transmission. This means that data is sent on a channel in a particular frequency range and then the transmitter hops on to the next frequency spectrum and again transmits data. Thus, the data transmission in Bluetooth networks is continuous whereas it occurs in bursts in UWB. Moreover, Bluetooth uses a part of the frequency spectrum whereas UWB uses the whole spectrum. The amount of data transmitted (at an instant) in UWB is also much more than it is in Bluetooth networks.
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