Dynamic Polarimetric Wideband Channel Sounding in an Elevator Shaft

Pasi Koivumaki, Mikko Heino, Katsuyuki Haneda, Mikko Puranen, Johanna Pesola

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


We report results from dynamic polarimetric wide-band channel sounding in an elevator shaft for the first time in the literature. Transmitter and receiver are fixed to the roof of an elevator car and top of the elevator shaft, respectively, to test radio link connectivity for infotainment display inside the car. To this end, we develop a real-time wideband channel sounder based on software-defined radios, capable of 160 MHz instantaneous bandwidth with varying carrier frequency from a few hundred MHz to 6 GHz. The sounder does not provide sufficient phase synchronization over time, but delay synchronization was found stable for estimation of absolute delay and Doppler spectrum. The results show significantly higher pathloss at 2.45 GHz for electric fields parallel to the longer side of the shaft than to the shorter side due to a break point. The power delay and Doppler spectrum showed significant amount of scattering for short transmitter-receiver separation due to surrounding clutters. The multipath richness decreased as the separation is longer. For the fixed power threshold in estimating a delay spread, 2.45 GHz channels had a higher estimates than 5.8 GHz when the car is at the top of shaft, while it was lower for the rest of car locations in the shaft.

Original languageEnglish
Title of host publication2019 European Conference on Networks and Communications (EuCNC) 18-21 June 2019 Valencia, Spain, Spain
Place of PublicationUnited States
Number of pages5
ISBN (Electronic)978-1-7281-0546-8
ISBN (Print)978-1-7281-0547-5
Publication statusPublished - 1 Jun 2019
MoE publication typeA4 Article in a conference publication
EventEuropean Conference on Networks and Communications - Valencia, Spain
Duration: 18 Jun 201921 Jun 2019

Publication series

NameEuropean Conference on Networks and Communications
ISSN (Print)2475-6490
ISSN (Electronic)2575-4912


ConferenceEuropean Conference on Networks and Communications
Abbreviated titleEuCNC


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