Impact of Spatial Correlation on the Finite-SNR Diversity-Multiplexing Tradeoff

Impact of Spatial Correlation on the Finite-SNR Diversity-Multiplexing Tradeoff

The impact of spatial correlation on the performance limits of multielement antenna (MEA) channels is analyzed in terms of the diversity-multiplexing tradeoff (DMT) at finite signal-to-noise ratio (SNR) values. A lower bound on the outage probability is first derived. Using this bound accurate finit...

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Veröffentlicht in:IEEE transactions on wireless communications 2008-04, Vol.7 (4), p.1184-1189
Hauptverfasser: Rezki, Z., Haccoun, D., Gagnon, F., Ajib, W.
Format: Artikel
Sprache:eng
Schlagworte:
Antennas
Applied sciences
Asymptotic properties
Channels
Correlation
Degradation
Diversity methods
Estimates
Exact sciences and technology
Fading
Gain
Mathematical analysis
MIMO
OFDM modulation
Performance analysis
Radiocommunications
Receiving antennas
Signal analysis
Signal to noise ratio
Telecommunications
Telecommunications and information theory
Upper bound
Wireless communication
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Beschreibung
Zusammenfassung:The impact of spatial correlation on the performance limits of multielement antenna (MEA) channels is analyzed in terms of the diversity-multiplexing tradeoff (DMT) at finite signal-to-noise ratio (SNR) values. A lower bound on the outage probability is first derived. Using this bound accurate finite-SNR estimate of the DMT is then derived. This estimate allows to gain insight on the impact of spatial correlation on the DMT at finite SNR. As expected, the DMT is severely degraded as the spatial correlation increases. Moreover, using asymptotic analysis, we show that our framework encompasses well-known results concerning the asymptotic behavior of the DMT.
ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2008.060984