Linear precoding for space-time coded systems with known fading correlations

Linear precoding for space-time coded systems with known fading correlations

We design an optimal linear precoder for a space-time coded system assuming knowledge of only the transmit antenna fading correlations. Assuming a flat fading channel and a maximum-likelihood receiver, we show that the linear precoder transmits power on the eigenmodes of the transmit antenna correla...

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Veröffentlicht in:IEEE communications letters 2002-06, Vol.6 (6), p.239-241
Hauptverfasser: Sampath, H., Paulraj, A.
Format: Artikel
Sprache:eng
Schlagworte:
Allocations
Antennas
Applied sciences
Channel capacity
Channels
Coding, codes
Correlation
Design engineering
Downlink
Exact sciences and technology
Fading
Information, signal and communications theory
MIMO
Optimization
Performance gain
Receiving antennas
Scattering
Signal and communications theory
Simulation
System performance
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Transmitters
Transmitting antennas
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Beschreibung
Zusammenfassung:We design an optimal linear precoder for a space-time coded system assuming knowledge of only the transmit antenna fading correlations. Assuming a flat fading channel and a maximum-likelihood receiver, we show that the linear precoder transmits power on the eigenmodes of the transmit antenna correlation matrix. The power allocation on the eigenmodes is a form of waterpouring policy. Simulation results are presented to show performance improvement on a space-time coded system.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2002.1010867