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Deep indoor scenarios are one of the most challenging areas of application for Global Navigation Satellite Systems (GNSS) in personal navigation devices. Especially severe signal attenuation, as well as heavy multipath constrain the use of GNSS in this environment. The project DINGPOS is focusing on the development of a platform for pedestrian users which can acquire and track GNSS signals also under...
This paper introduces a combined UMTS/GNSS receiver architecture with a single reconfigurable radio frequency (RF) front-end. After a review of the state-of-the-art for UMTS and NAVSAT receivers, a configurable UMTS/-GNSS architecture is proposed. The investigated concept is based on a digital-front-end (DFE) to prevent duplication of hardware, which will result in considerably lower costs. The DFE...
This paper introduces a hybrid receiver architecture for user equipment positioning by using UMTS and GNSS signals. After a review of the UMTS and Galileo/GPS signal structures and the state-of-the-art in receiver RF and base-band architectures, a configurable GNSS/UMTS architecture is proposed. The investigated concept is based on a reconfigurable receive chain to prevent duplication of hardware,...
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