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International Journal of Antennas and Propagation
Volume 2012, Article ID 826425, 5 pages
http://dx.doi.org/10.1155/2012/826425
Research Article

Differences in User Influence on MIMO Handset Antenna Performance in Reverberation Chamber

1Departamento de Tecnologías de la Información y Comunicaciones, Universidad Politécnica de Cartagena, 30202 Cartagena, Spain
2Electronics Department, SP Technical Research Institute of Sweden, Box 857, 501 15 Borås, Sweden
3Departamento de Ingeniería de Sistemas Informáticos y Telemáticos, Universidad de Extremadura, 06800 Mérida, Spain
4Network Communication Research Lab, Sony Mobile Communications, Nya Vattentornet, 221 88 Lund, Sweden

Received 31 July 2012; Accepted 7 October 2012

Academic Editor: Guangyi Liu

Copyright © 2012 Juan D. Sánchez-Heredia et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

User influence on multiple-input multiple-output (MIMO) performance is studied for different dual antenna handsets specially designed to have good and bad MIMO performance. The study reveals that user influence can cause either improvement or degradation for different test objects, including a spread effect over the parameters. Differences in performance between good and bad handsets can be clear when they are measured without user influence, but become small under real person influence. This result illustrates the particular importance of user influence to characterize MIMO handsets.