A Hybrid Deterministic-Stochastic Propagation Model for Short-Range MIMO-UWB Communication Systems

Abstract

This paper presents a computationally effective approach for including dense multipath components in ray tracing simulations of ultra wideband (UWB) channels. Through a combination of a standard ray tracing model with a simple geometric-stochastic model realistic scenariospecific simulations are possible. The frequency and direction selectivity of the channel are reproduced accurately by the model. The structure and parameters of the stochastic part of the model are derived from measurements in the FCC-UWB frequency range. Compared to conventional ray tracing simulations the proposed model reduces considerably the differences between simulated and measured channel characteristics.

Cooperative Localization and Object Recognition in Autonomous UWB Sensor Networks

“…The placement of scatterers ensures that part of the contributions are resolvable for the UWB system. Some preliminary results of this model were previously presented in [23], [24] and [25].…”

“…Two are office scenarios (scenario B and D), where the number of details in both rooms is small. The third scenario (scenario C) is a cluttered lab scenario [25]. Here, a large number of small details such as cables, tools, books etc.…”

“…For the derivation of the model parameters, the behavior of the channel characteristics (path loss L and delay spread σ D ) in the measurements and the simulations are analyzed and compared [25]. To find adequate model parameters, simulations with different parameter sets are conducted and compared with the measurements.…”

“…To test the parameterized model, it is compared with measurements with respect to path loss, delay spread, azimuth spread, power delay profiles and azimuth spectra at the receiver [25]. For the estimation of the power delay profiles and azimuth spectra, the first Tx position and a rectangular track along the edges of the positioning table at Rx is considered.…”