What is UWB transmission technology? What are its applications in medical devices?

"UWB (Ultra WideBand) is a short-range wireless communication method. The transmission distance is usually within 10m, and using a bandwidth of more than 1 GHz, the communication speed can reach more than several hundred Mbit/s. UWB does not use a carrier wave, but utilizes nanoseconds to micro-microseconds non-sinusoidal narrow pulse to transmit the data, so it occupies a very wide range of frequency spectrum, and is suitable for high-speed, short-distance wireless personal communication. GHz to 10.6 GHz, with a minimum operating bandwidth of 500 MHz.The difference between UWB transmission technology and traditional narrowband and broadband transmission technology is mainly in the following two aspects. One is the transmission bandwidth, and the other is the use of carrier mode or not. From the transmission bandwidth, according to the definition of the U.S. Federal Communications Commission FCC: the signal bandwidth is greater than 1.5G or the ratio of the signal bandwidth to the center frequency is greater than 25% of the ultra-wideband. Ultra-wideband transmission technology uses baseband transmission directly. It transmits by sending pulsed radio signals directly, which can send billions of pulses per second. However, the frequency domain of these pulses is very wide, covering several Hz to several GHz.Since UWB transmits a relatively low carrier power over a wide range of frequencies, UWB is equivalent to noise and has a rather small effect on conventional radio waves as compared to conventional radio waves.The technical characteristics of UWB show that it has incomparable advantages over conventional narrowband and broadband technologies. "

Currently, as far as I know, there are very few applications in medical equipment. This technology is applied when transmitting images, such as the transmission of image data from rotating and stationary parts inside a CT rack.