A comprehensive evaluation of indoor ranging using ultra-wideband technology
EURASIP Journal on Wireless Communications and Networking
Time-domain diversity in ultra-wideband MIMO communications
EURASIP Journal on Applied Signal Processing
Multiband-OFDM MIMO coding framework for UWB communication systems
IEEE Transactions on Signal Processing
Super-resolution TOA estimation with diversity for indoor geolocation
IEEE Transactions on Wireless Communications
Modeling the statistical time and angle of arrival characteristics of an indoor multipath channel
IEEE Journal on Selected Areas in Communications
The ultra-wide bandwidth indoor channel: from statistical model to simulations
IEEE Journal on Selected Areas in Communications
A new statistical wideband spatio-temporal channel model for 5-GHz band WLAN systems
IEEE Journal on Selected Areas in Communications
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Despite the potential for high-speed communications, stringent regulatory mandates on Ultra-Wideband (UWB) emission have limited its commercial success. By combining resolvable UWB multipath from different directions, Multiple-Input Multiple-Output (MIMO) systems can drastically improve link robustness or range. In fact, a plethora of algorithms and coding schemes already exist for UWB-MIMO systems, however these papers use simplistic channel models in simulation and testing. While the temporal characteristics of the UWB channel have been well documented, surprisingly there currently exists but a handful of spatial-temporal models to our knowledge, and only two for bandwidths in excess of 500 MHz. This paper proposes a comprehensive spatial-temporal model for the frequency spectrum 2-8 GHz, featuring many novel parameters. In order to extract the parameters, we conduct an extensive measurement campaign using a vector network analyzer coupled to a virtual circular antenna array. The campaign includes 160 experiments up to a non line-of-sight range of 35 meters in four buildings with construction material varying from sheetrock to steel.