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Comparison of Different MIMO Antenna Arrays and User's Effect on Their Performances
Author(s) -
GómezCalero Carlos,
Jamaly Nima,
Martínez Ramón,
Haro Leandro
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27746
Subject(s) - mimo , omnidirectional antenna , electromagnetic reverberation chamber , electronic engineering , wimax , antenna (radio) , 3g mimo , computer science , reconfigurable antenna , rectenna , multi user mimo , directional antenna , diversity gain , antenna efficiency , wireless , electrical engineering , telecommunications , engineering , beamforming , reverberation , rectification , voltage
Multiple‐input multiple‐output (MIMO) systems have entailed a great enhancement in wireless communications performances. The use of multiple antennas at each side of the radio link has been included in recent drafts and standards such as WLAN, WIMAX, or DVB‐T2. The MIMO performances depend on the antenna array characteristics and thus several aspects have to be taken into account to design MIMO antennas. In the literature, many articles can be found in terms of capacity or antenna design, but in this article, different types of antenna arrays for MIMO systems are measured in a reverberation chamber with and without a phantom as a user′s head. As a result, the MIMO performances are degraded by the user in terms of efficiency, diversity gain, and capacity. Omnidirectional antennas such as monopoles with high radiation efficiency offer the highest performance for a rich scattering nonline of sight indoor environment. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2039–2043, 2013