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In this letter, an overview of reported measurements and modeling of the ultra wide band (UWB) indoor wireless channel is presented. An introduction to UWB technology and UWB channels is provided. Different UWB channel sounding techniques are discussed and approaches for the modeling of the UWB channel are reviewed. The available indoor UWB channel(More)
In this paper, a 2D/3D UWB localization technique based on joint ToA/DoA in indoor dense multipath environment is proposed. In this method, direction of arrival (DoA) is estimated from time of arrival (ToA). The joint usage of ToA and DoA results in an accurate localization of the mobile node (MN). Unlike conventional methods, the proposed localization(More)
A 2D UWB localization technique based on joint ToA/DoA in indoor dense multipath environment is proposed. In this method, direction of arrival (DoA) is estimated from time of arrival (ToA). The joint usage of ToA and DoA results in an accurate localization of the mobile node (MN). Unlike conventional methods, the proposed localization technique needs only(More)
Ultrawideband (UWB) technology is an attractive alternative for short-range applications, e.g., wireless personal area networks. In these applications, transmit and receive antennas are very close to each other and the far-field condition assumed in most of the link budget models may not be satisfied. Under near-field conditions, variations in the link(More)
Wireless personal area networks applications may benefit from the use of ultra-wideband (UWB) technology. In these applications transmit and receive antennas are very close to each other and the far-field condition assumed in most of the link budget models may not be satisfied. Under nearfield conditions, variations in the link budget and pulse shape(More)
In this paper, an Ultra-Wideband (UWB) receiver scheme with very low sampling rate is proposed for ranging in indoor multipath environments. The idea underlying the proposed scheme is that, instead of processing the whole UWB band, only partial sub-bands are considered at the receiver. The missing sub-bands are estimated by exploiting an estimate of the(More)
An RF passive orthonormal ladder filter using transformers is presented, where the output is obtained from a linear, weighted combination of the voltages or currents at predetermined nodes or branches. With this topology, arbitrary rational transfer functions can be mapped onto silicon. Key features of this single-input, multiple-output (SIMO) topology(More)