DOF of indoor MIMO systems

Author

Xu, Jie

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Loyola Marymount Univ., Los Angeles, CA, USA

fYear

2012

fDate

8-14 July 2012

Firstpage

1

Lastpage

2

Abstract

The degrees-of-freedom (DOF) of the multiple-input multiple-output (MIMO) channels in indoor environments is studied by considering the electromagnetic (EM) propagations in rectangular cavities. The cavity walls are made either lossy or losses, and hence the effects of losses are examined by comparing the two cases. It is found when the system is lossless, it is possible to continuously raise its effective DOF number by packing more and more antennas in fixed communication volumes, and this can be done to an extent that is far greater than allowed in the lossy system case. Additionally, the performance improvement of multi-polarized MIMO systems over similar uni-polarized ones are also investigated. Unlike the polarization gain suggested by an existing research, the results from this work show that the practically obtainable benefits from the EM polarizations are actually higher, and also vary with the system operation conditions.

Keywords

MIMO communication; radiowave propagation; DOF; EM polarizations; EM propagations; cavity walls; degrees-of-freedom; electromagnetic propagations; fixed communication volumes; indoor environments; multiple-input multiple-output channels; multipolarized MIMO systems; performance improvement; rectangular cavities; system operation conditions; Antenna arrays; Cavity resonators; Electromagnetics; Green´s function methods; MIMO;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE

Conference_Location

Chicago, IL

ISSN

1522-3965

Print_ISBN

978-1-4673-0461-0

Type

conf

DOI

10.1109/APS.2012.6348080

Filename

6348080