Cellular MIMO system performance versus base station element spacing

Author

Yamamoto, Atsushi ; Hayashi, Toshiteru ; Ogawa, Koichi ; Olesen, Kim ; Nielsen, Jesper Ø ; Pedersen, Gert F.

Author_Institution

Network Dev. Center, Matsushita Electr. Ind. Co., Ltd., Kadoma

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

Abstract

Outdoor MIMO propagation tests were carried out in an urban area in the Danish city of Aalborg in order to investigate some parameters that affect cellular MIMO base-station antennas. We experimentally examined the 2-by-2 MIMO channel responses of base-station arrays with differently-spaced antennas. From these trials, a clear dependence was found between antenna spacing and fading correlation, going from about 0.6 to about 0.1 when the spacing is increased from 1 to 6 wavelengths. However, due to the overall low correlation, the corresponding MIMO capacity gain over SISO capacity only increases from about 1.78 to about 1.87, and thus only a small extra capacity obtained.

Keywords

MIMO communication; cellular radio; mobile antennas; MIMO antennas; base station element spacing; cellular MIMO system; cellular communication; Antennas and propagation; Base stations; Cellular networks; Channel capacity; Fading; MIMO; Mobile antennas; Mobile communication; System performance; Urban areas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2041-4

Electronic_ISBN

978-1-4244-2042-1

Type

conf

DOI

10.1109/APS.2008.4619033

Filename

4619033