Fading correlations in wireless MIMO communication systems

Michel T. Ivrlač; Wolfgang Utschick; Josef A. Nossek

doi:10.1109/JSAC.2003.810348

Fading correlations in wireless MIMO communication systems

Michel T. Ivrlač, Wolfgang Utschick, Josef A. Nossek

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

177 Scopus citations

Abstract

We investigate the effects of fading correlations on wireless communication systems employing multiple antennas at both the receiver and the transmitter side of the link, so called multiple-input multiple-output (MIMO) systems. It turns out that the amount of transmitter sided channel knowledge plays an important part when dealing with fading correlations. Furthermore, the possible availability of time diversity in a time-selective channel can have essential influence on performance. To study the influence of time-selectivity, the concept of sample-mean outage is introduced and applied to information theoretic measures, like capacity or cutoff rate. It will be shown, that in some cases correlated fading may offer better performance than uncorrelated fading permits, which is due to exploitable antenna gain, that will also be defined in a general form for MIMO systems.

Original language	English
Pages (from-to)	819-828
Number of pages	10
Journal	IEEE Journal on Selected Areas in Communications
Volume	21
Issue number	5
DOIs	https://doi.org/10.1109/JSAC.2003.810348
State	Published - Jun 2003

Keywords

Eigenbeamforming
Fading correlation
Long-term channel knowledge
MIMO capacity
Multiple-input multiple-output (MIMO) antenna gain
Sample-mean outage cutoff rate

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10.1109/JSAC.2003.810348

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title = "Fading correlations in wireless MIMO communication systems",

abstract = "We investigate the effects of fading correlations on wireless communication systems employing multiple antennas at both the receiver and the transmitter side of the link, so called multiple-input multiple-output (MIMO) systems. It turns out that the amount of transmitter sided channel knowledge plays an important part when dealing with fading correlations. Furthermore, the possible availability of time diversity in a time-selective channel can have essential influence on performance. To study the influence of time-selectivity, the concept of sample-mean outage is introduced and applied to information theoretic measures, like capacity or cutoff rate. It will be shown, that in some cases correlated fading may offer better performance than uncorrelated fading permits, which is due to exploitable antenna gain, that will also be defined in a general form for MIMO systems.",

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AU - Utschick, Wolfgang

AU - Nossek, Josef A.

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AB - We investigate the effects of fading correlations on wireless communication systems employing multiple antennas at both the receiver and the transmitter side of the link, so called multiple-input multiple-output (MIMO) systems. It turns out that the amount of transmitter sided channel knowledge plays an important part when dealing with fading correlations. Furthermore, the possible availability of time diversity in a time-selective channel can have essential influence on performance. To study the influence of time-selectivity, the concept of sample-mean outage is introduced and applied to information theoretic measures, like capacity or cutoff rate. It will be shown, that in some cases correlated fading may offer better performance than uncorrelated fading permits, which is due to exploitable antenna gain, that will also be defined in a general form for MIMO systems.

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Fading correlations in wireless MIMO communication systems

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Keywords

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