Spatial characterization of urban mobile radio channels
Författare
Summary, in English
We present statistical evaluations of wideband spatial
dual-polarized radio channel measurements. Some 80 different street-level transmitter positions in downtown
Helsinki, Finland, were measured. We chose three different
receiver array sites below, at, and above the roofop level of the surrounding urban environment. A super-resolution algorithm allows the determination of the directions of arrival of incident radio waves at a 16x62 elements base station antenna array. The main conclusion of our investigations is that the incident waves tend to cluster in azimuth, elevation and/or delay, which we justify by detailed statistical evaluations.
Clustering is mainly dejined by the surroundings
of the base station. The cumulative distribution jimction of the powers of these clusters shows that in 90% of all cases, 75% of the total received power is concentrated in the two strongest clusters. Street guided propagation dominates at all three receiver sites, even if the base station is above the roofop level.
dual-polarized radio channel measurements. Some 80 different street-level transmitter positions in downtown
Helsinki, Finland, were measured. We chose three different
receiver array sites below, at, and above the roofop level of the surrounding urban environment. A super-resolution algorithm allows the determination of the directions of arrival of incident radio waves at a 16x62 elements base station antenna array. The main conclusion of our investigations is that the incident waves tend to cluster in azimuth, elevation and/or delay, which we justify by detailed statistical evaluations.
Clustering is mainly dejined by the surroundings
of the base station. The cumulative distribution jimction of the powers of these clusters shows that in 90% of all cases, 75% of the total received power is concentrated in the two strongest clusters. Street guided propagation dominates at all three receiver sites, even if the base station is above the roofop level.
Publiceringsår
2002
Språk
Engelska
Sidor
399-403
Publikation/Tidskrift/Serie
IEEE Journal on Selected Areas in Communications
Volym
1
Dokumenttyp
Artikel i tidskrift
Förlag
IEEE - Institute of Electrical and Electronics Engineers Inc.
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1558-0008