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Efficient experimental evaluation of a MIMO handset with user influence

Författare:
Publiceringsår: 2010
Språk: Engelska
Sidor: 853-863
Publikation/Tidskrift/Serie: IEEE Transactions on Wireless Communications
Volym: 9
Nummer: 2
Dokumenttyp: Artikel i tidskrift
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.

Sammanfattning

The immediate environment of handset antennas,

including the casings and the users holding the handsets, has a

strong impact on the radio channel in mobile communication. In

this paper we investigate a composite channel method that synthetically

combines double-directional measurements of the userless

propagation channel with measured super-antenna patterns,

i.e., patterns of the combined antenna-casing-user arrangement.

We experimentally evaluate the method by comparing results

(power, capacity, and eigenvalue distribution) obtained from

this composite method with direct measurements in the same

environment. The measurements were done in two static 8 × 4

MIMO scenarios at 2.6 GHz, with the user indoors and the base

station located outdoors and indoors, respectively. A realistic user

phantom together with a “smart-phone” handset mock-up with

four antenna elements was used, and different configurations and

orientations were tested. The method gives statistical distributions

of the MIMO eigenvalues, that are close to the measured. By

using the composite method, we found that the user, apart from

introducing hand and body loss that mainly decreases the SNR of

the channel, slightly increases the correlation between the fading

at the antenna elements.

Nyckelord

  • Electrical Engineering, Electronic Engineering, Information Engineering
  • channel measurement
  • Mobile communication
  • channel model
  • user phantom
  • multiple-input multiple-output (MIMO)

Övriga

Published
  • Radio Systems-lup-obsolete
  • ISSN: 1536-1276

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