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In TM–UWB, the system uses a modulation technique called _______(a) Pulse width modulation(b) Pulse code modulation(c) Pulse position modulation(d) Pulse amplitude modulationI got this question in an online interview.My query is from Ultra-Wideband Technologies in section Satellite Systems & Recent Advances of Wireless/Mobile

Answer»

Right choice is (c) Pulse position MODULATION

Explanation: In TM–UWB, the system uses a modulation TECHNIQUE called pulse position modulation. The TM–UWB transmitter emits ultra-short monocycle wavelets with TIGHTLY CONTROLLED pulse-to-pulse INTERVALS, which are varied on a pulse-by-pulse basis in accordance with an information signal and a channel code.



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