Journal of Engineering
A new energy detection ultra-wideband system based on pulse width modulation is proposed. The bit error rate (BER) performance of this new system is slightly worst than that of a pulse position modulation (PPM) system in additive white Gaussian noise channels. In multipath channels, this system does not suffer from cross-modulation interference as PPM, so it can achieve better BER performance than PPM when cross-modulation interference occurs. In addition, when synchronisation errors occur, this system is more robust than PPM.
Cui, Song and Xiong, Fuqin, "Energy Detection UWB System Based on Pulse Width Modulation" (2014). Electrical Engineering & Computer Science Faculty Publications. 313.