Time-Domain Full-Wave Analysis and System-Level Modeling of Microwave Ultra-Wideband Indoor Communication Systems

Ultra-wideband radio is an enabling microwave technology for broadband communication and high-resolution sensing. However, the full realization of its potential requires further research on ultra-wideband signal propagation and interference with existing narrowband systems. Such questions can be rigorously resolved from the fundamental viewpoint of electromagnetic theory. Yet, this approach has been limited by its computational cost. This paper demonstrates the application of a high-order finite-difference time-domain technique to indoor ultra-wideband channel modeling with a two-fold purpose. First, the advantages of both serial and parallel versions of the technique compared to the conventional Finite-Difference TimeDomain are pointed out. Also, a connection between the field analysis of a channel and its system-level description is made, establishing the usefulness of this work for performance projections, optimization and compatibility studies of ultra-wideband communication schemes and network architectures.