Abstract
A novel MIMO (multiple input multiple output) satellite channel model that allows the generation of associated channel impulse response (CIR) time series depending on the movement profile of a land mobile terminal is presented in this paper. Based on high precise wideband measurements in L-band the model reproduces the correlated shadowing and multipath conditions in rich detail. The model includes time and space variant echo signals appearing and disappearing in dependence on the receive antenna position and movement, and the actual azimuths and elevations to the various signal sources. Attenuation and path delays relative to the hypothetical line of sight (LOS) ensure usability for ranging purposes. Parameters for car and pedestrian applications in urban and suburban environments are provided. The channel characteristics are determined independently of the transmitted signal. Therefore the usability, for example, for GPS and GALILEO, as well as wideband communication services from hovering platforms, is given.
Highlights
Augmentation systems are widely used to improve the localization accuracy of global navigation satellite system (GNSS) receivers by providing estimates of most error sources
The goal of the wideband MIMO satellite channel model presented in this paper is to take high detailed environmental and geometry related deterministic effects, as well as correlations among the different satellite signal paths into account, in order to develop more effective multipath mitigation techniques and to increase service continuity and quality for mobile receivers in urban and suburban environments in the future
We propose a novel Wideband MIMO Satellite (WMS) channel model that reproduces multipath propagation effects in accurate detail by taking correlations among echoes from single reflectors into account
Summary
Augmentation systems are widely used to improve the localization accuracy of global navigation satellite system (GNSS) receivers by providing estimates of most error sources. Hybrid models are fast and accurate: they combine a virtual city with simplified electromagnetic interactions and statistical distributions Such approaches do exist for groundto-ground communications, for example, the WINNER II [10] channel model, which is a stochastic model that even takes clusters of reflections into account. The goal of the wideband MIMO satellite channel model presented in this paper is to take high detailed environmental and geometry related deterministic effects, as well as correlations among the different satellite signal paths into account, in order to develop more effective multipath mitigation techniques and to increase service continuity and quality for mobile receivers in urban and suburban environments in the future.
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