Suppression of noise and narrowband interference in UWB indoor channel measurements

Conference paper (2005)

Authors

Z. Irahhauten Wireless and Mobile Communications
Alexander Yarovoy Microwave Technology and Systems for Radar
Alexander Yarovoy Microwave Technology and Systems for Radar
G.J.M. Janssen Wireless and Mobile Communications
H. Nikookar Microwave Technology and Systems for Radar
L.P. Ligthart Microwave Technology and Systems for Radar
Research Group
Wireless and Mobile Communications
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Published Date

2005

Language

Undefined/Unknown

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Research Group

Wireless and Mobile Communications

Abstract

In this paper, the impact of the noise due to undersampling of noncoherent narrowband interference in time domain UWB channel measurements is investigated. Different measurements were carried out within the building for LOS and NLOS situations. The obtained results show that energy of external narrowband interference (especially at frequencies below 3.1 GHz) is spread over the whole measured bandwidth (1-12 GHz) as a quasi-white noise. This spreading is caused by the stroboscopic sampling receiver and used in the measurement setup. The leel of this additional noise is relatively high and its suppression is required for long-distance by an analogue bandpass filter directly after the receive antenna substantially decreases the noise floor and results in a large improvement of the singal-to-noise ratio.