NDLI: 2 GHz Band MIMO Channel Properties in Urban Small Cell Scenario in Crowded Area

Content Provider	IEEE Xplore Digital Library
Author	Saito, K. Imai, T. Okumura, Y.
Copyright Year	2014
Description	Author affiliation: NTT DOCOMO, Inc., Yokosuka, Japan (Saito, K.; Imai, T.; Okumura, Y.)
Abstract	The user traffic volume in the cellular network has been growing rapidly. Recent capacity enhancement techniques based on the small-cell architecture are examined for crowded areas such as urban railway stations and environs. Although small-cell propagation environments are characterized by short distances and low antenna heights, the applicability of current MIMO channel models in those environments has not been adequately investigated. In addition, although there are a great number of pedestrians and vehicles in urban areas, the influence of pedestrians on the MIMO channel models remains unclear. In this paper we carried out channel sounding experiments outside a crowded urban railway station in the 2 GHz band assuming the use of LTE-based cellular systems. To elucidate the influence of pedestrians on the channel properties, the measurements were carried out both in the daytime and in the midnight. The measurements result showed that the received power decreased about 4-5 dB in the daytime due to the shadowing by the pedestrians. In addition, the delay spreads decreased and AoAelv and AoDelv spreads increased in the daytime due to the change of propagation environment caused by the pedestrians.
Starting Page	1
Ending Page	5
File Size	1062390
Page Count	5
File Format	PDF
ISBN	9781479944491
DOI	10.1109/VTCFall.2014.6965799
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-14
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna measurements Channel models Power measurement MIMO Delays Frequency measurement Length measurement
Content Type	Text
Resource Type	Article

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