Evaluation of a New Wideband Slot Array for MIMO Performance Enhancement in Indoor WLANs

Author

Costa, Jorge R. ; Lima, Eduardo B. ; Medeiros, Carla R. ; Fernandes, Carlos A.

Author_Institution

Inst. de Telecomun., IST, Lisbon, Portugal

Volume

59

Issue

4

fYear

2011

fDate

4/1/2011 12:00:00 AM

Firstpage

1200

Lastpage

1206

Abstract

A new wideband compact slot antenna array for indoor WLAN access points (AP) is described, covering several wireless communication services from 2.4 to 4.8 GHz, that is especially designed to enhance MIMO system capacity. The array topology provides both spatial and polarization diversity. Despite very close packing of the array elements, these exhibit very low mutual coupling and low cross-polarization, greatly favoring MIMO diversity gain. A detailed MIMO performance comparison is conducted against a common array of patches in indoor environment, based both on simulation and indoor measurements: the new antenna shows a clear improvement in terms of channel capacity.

Keywords

MIMO communication; UHF antennas; broadband antennas; channel capacity; diversity reception; indoor radio; microstrip antenna arrays; slot antenna arrays; wireless LAN; MIMO diversity gain; MIMO system capacity enhancement; and low cross-polarization; array topology; channel capacity; frequency 2.4 GHz to 4.8 GHz; indoor WLAN access points; indoor measurements; low mutual coupling; polarization diversity; spatial diversity; wideband compact slot antenna array; wireless communication services; Antenna arrays; Antenna measurements; Antenna radiation patterns; Arrays; MIMO; WiMAX; Multiple input multiple output (MIMO) array; printed wideband antenna; spatial and polarization diversity; tapered slot antenna; wireless local area network (WLAN);

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2011.2109685

Filename

5705553