Ultra-wideband pulse shaping: bypassing the inherent limitations of the Gaussian monocycle

Improving ultra wideband (UWB) system by modified random combination of pulses

“…The above figure shows that the power spectral density (PSD) of the optimal pulse is shown by the dark blue curve following the emission limit requirements effectively as in comparison to the individual PSD of the first five derivatives using optimal values given in the table 2 with the Power Spectral Utilization (Percentile ratio of the spectral power of the pulse transmitted and the spectral power of the emission mask in 3.1GHz to 10.6 GHz frequency range) of nearly 85%. The Power Spectral Utilization results obtained using the proposed combined pulse are better than as compared to the results presented in [8] with the shaping factor selected by trial and error method as 1.5 x 10 values also show significant improvement as compared to the proposed pulse and the fifth-order derivative with spectral efficiency of 57.40% by linear combination of the Gaussian doublet pulses in [12], 60-70% by the combination of the Gaussian pulse and its derivatives in [10] and the power spectral utilization of 35 % and 48.52% stated for the pulse in [30]. The obtained optimal pulse shows better results as compared to results presented in paper [7] by linearly combining two first-order derivatives of the Gaussian pulses using different pulse shaping values of 0.049 x 10 -9 s and 0.048 x 10 -9 s. Also, the emission matching attained by our proposed method shows an improvement using the optimal pulse factor values for the first five Gaussian derivatives as compared to the same pulse factor value of 0.7 x 10 -9 s for the derivatives given in [9].…”

“…A pulse shaping techniques is investigated the UWB waveforms by using three different pulse shapes i.e. Gaussian monocycles, fifth derivative and by combining the Gaussian monocycle and its higher order derivatives and measured their power spectral densities and efficiency to satisfy the emission mask [10]. A linear combining method of waveforms for matching the emission mask criteria of the UWB systems was also presented in [11].…”

UWB pulse radio transceivers and antennas: Considerations on design and implementation

“…Despite monocycle pulses may lead to an under usage of the available spectrum as discussed in several works [12], there is little or not at all awareness that they may also lead to some potential benefits. In fact, with respect to multi-cycle pulses, pulses allow us to achieve a finer time granularity, which may lead to a finer spatial resolution and shorter operating distance from the target (both typically very important in radar sensing).…”

“…Moreover, chip packaging and antenna design should also preserve the bandwidth of the pulse signals and do not introduce distortions. Despite the aspects associated with chip packaging are often not addressed, the pulse shaping through the transmitting antenna, also referred as antenna co-design, is an active research area especially in data communications [12]. On the receiving side, the preservation of the bandwidth of the receiver is often addressed for LNA and antenna only, despite it should be addressed over the entire receiver chain.…”

A nobel characterization of shape of pulse in GPR signal transmission

“…The strict power limitations imposed by the FCC spectral mask necessitate spectral pulse shaping: designing spectrally efficient pulses that eke out most of the power available under the FCC mask [1]. Pulse shaping technique is used for fulfillment of optimality; like bandwidth, power, attenuation, ease of reconstruction of signal and so on at the receiver end.…”