Model pulses in the TD design of UWB wireless signal transfer systems

The amenability of some model pulses for being employed in the time-domain (TD) design of ultra-wideband (UWB) wireless signal transfer systems is analyzed. The mandatory feature to this end is their causality. Furthermore, a rectangular spectral diagram is desirable for meeting certain practical requirements, such as conformity to international spectrum regulations. The study highlights the favorable properties of the power exponential family of pulses. Moreover, the power exponential modulated sinc-cosine function is shown to combine causality and a spectral content that approximates well the desired rectangular spectral diagram. These features recommend these pulses as excitations for TD (software) models to be employed in the design of UWB wireless systems.