An efficient orthogonal pulse set generator for high-speed sub-GHz UWB communications

Due to their orthogonality and nearly constant pulse widths, Modified Hermite Pulses (MHPs) have shown a great potential to enhance the data rate of UWB communications by creating M-ary or multiple access parallel systems. However, the potential high power dissipation required by the pulse set generation and the frequency shifting has limited their utilization in practice. In this paper, we propose a novel computation-efficient model for MHP set generators. Compared with existing models, the proposed model has made it feasible to design a power-efficient MHP set generator. Utilizing our proposed model along with neuromorphic circuit level implementations, we have developed an ultra-low power architecture for MHP set generation for sub-GHz (0 - 960 MHz) UWB communications. Results from both the mathematical analysis and the design layout simulations illustrate the effectiveness of the proposed scheme for the design of a power-efficient MHP set generator.