Achievable Gains of Directional Antennas in Outdoor-Indoor Propagation Environments

Author

Feick, Rodolfo ; Rodriguez, Mauricio ; Ahumada, Luciano ; Valenzuela, Reinaldo A. ; Derpich, Milan ; Bahamonde, Oscar

Author_Institution

Electron. Eng. Dept., Univ. Tec. Federico Santa Maria, Santa Maria, Chile

Volume

14

Issue

3

fYear

2015

fDate

Mar-15

Firstpage

1447

Lastpage

1456

Abstract

We present an empirically based model for the gain of an indoor antenna array. This corresponds to the re-parametrization of the Greenstein-Erceg model, as applied to 5 m-50 m narrowband outdoor-indoor links. Our model is applicable to a few adjacent tones in an OFDM femtocell system such as LTE. We find that as much as 14 out of 16 dB of antenna-gain are attainable even in rich indoor scattering conditions. At the same time, no larger fade margin is required when using the array vs. the omnidirectional antenna. To provide a reference for the observed results we consider a simple propagation model, which is analyzed theoretically and via simulation. This model is found to match our empirical results very well.

Keywords

OFDM modulation; antenna arrays; cellular radio; directive antennas; indoor radio; omnidirectional antennas; radio links; radiowave propagation; Greenstein-Erceg model; LTE; OFDM femtocell system; directional antennas; gain 16 dB; indoor antenna array gain; indoor scattering conditions; narrowband outdoor-indoor links; omnidirectional antenna; outdoor-indoor propagation environments; Antenna measurements; Directive antennas; Gain; Omnidirectional antennas; Receiving antennas; Wireless communication; Channel models; directive antennas; gain reduction factor; outdoor-indoor wireless links;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2014.2366462

Filename

6942285