How to add ultra wideband signal （UWB ）？

[summer2ice]

  Hi，May I ask if I want to add the transmitting source as an ultra-wideband signal (frequency range: 3.1GHz - 10.6GHz; Pulse width: 0.2ns to 1.5ns Bandwidth: 500MHZ. ）How should it be set up? 
  Remark：A significant difference between conventional radio transmissions and UWB is that conventional systems transmit information by varying the power level, frequency, or phase (or a combination of these) of a sinusoidal wave. UWB transmissions transmit information by generating radio energy at specific time intervals and occupying a large bandwidth, thus enabling pulse-position or time modulation.
 As UWB is currently widely used and can meet the requirements of centimeter-level ranging and positioning, I am very interested in implementing it in sionna. 😀

Thank you in advance for your reply. Thank you?🎉