On the role of the number of degrees of freedom of the field in MIMO channels

The aim of this paper is to investigate the relationship between the effective number of degrees of freedom (ENDF) of a multiple input multiple output (MIMO) channel and the number of degrees of freedom (NDF) of the field. In particular, the NDF of the field represents an upperbound for the ENDF of...

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Veröffentlicht in:	IEEE transactions on antennas and propagation 2006-02, Vol.54 (2), p.620-628
1. Verfasser:	Migliore, M.D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Antennas Applied sciences Channel capacity Channels Degrees of freedom Diversity reception Electromagnetic fields Electromagnetic scattering Exact sciences and technology Intervals Mathematical analysis MIMO Mobile antennas multiple input multiple output (MIMO) channel Radar scattering Ray tracing Receiving antennas Space technology Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments)
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Beschreibung
Zusammenfassung:	The aim of this paper is to investigate the relationship between the effective number of degrees of freedom (ENDF) of a multiple input multiple output (MIMO) channel and the number of degrees of freedom (NDF) of the field. In particular, the NDF of the field represents an upperbound for the ENDF of a MIMO channel. Consequently, the evaluation of the maximum ENDF can be carried out by adopting the literature on the NDF based on the spatial bandlimitation properties of the field. This approach allows a simple and intuitive explanation of the maximum ENDF in a MIMO channel based on a geometrical interpretation of the spatial channel in terms of (spatial) Nyquist intervals.
ISSN:	0018-926X 1558-2221
DOI:	10.1109/TAP.2005.863108