A new class of iterative equalizers for space-time BICM over MIMO block fading multipath AWGN channel

This paper addresses the issue of advanced equalization methods for space-time communications over multiple-input multiple-output block fading channel with intersymbol interference. Instead of resorting to conventional multiuser detection techniques (based on the straightforward analogy between ante...

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Veröffentlicht in:IEEE transactions on communications Jg. 53; H. 12; S. 2076 - 2091
Hauptverfasser: Visoz, R., Berthet, A.O., Chtourou, S.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York, NY IEEE 01.12.2005
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Applied sciences
AWGN channels
Belief propagation (BP)
Blocking
Channels
Computational complexity
Criteria
Detection, estimation, filtering, equalization, prediction
Equalization
Equalizers
Exact sciences and technology
factor graph
Fading
Information, signal and communications theory
Intersymbol interference
MIMO
Modulation
Multidimensional systems
multiple-input multiple-output (MIMO)
Multiuser detection
Performance gain
Signal and communications theory
Signal, noise
space-time bit-interleaved coded modulation (STBICM)
space-time coding
space-time turbo equalization
Symbols
Telecommunications and information theory
Time domain analysis
Fading channels
MIMO system
factor graph
space-time bit-interleaved coded modulation (STBICM)
Wireless telecommunication
space-time coding
Iterative method
Space time
space-time turbo equalization
Turbo code
multiple-input multiple-output (MIMO)
Equalization
Multipath channels
AWGN channels
Belief propagation (BP)
Interleaved codes
Performance analysis
Modulation coding
ISSN:0090-6778, 1558-0857
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Beschreibung
Zusammenfassung:This paper addresses the issue of advanced equalization methods for space-time communications over multiple-input multiple-output block fading channel with intersymbol interference. Instead of resorting to conventional multiuser detection techniques (based on the straightforward analogy between antennas and users), we adopt a different point of view, and separate time equalization from space equalization, thus introducing a higher degree of freedom in the overall space-time equalizer design. Time-domain equalization relies on minimum mean-square error criterion and operates on multidimensional modulation symbols, whose individual components can be detected in accordance with another criterion. In particular, when the optimum maximum a posteriori criterion is chosen, substantial performance gains over conventional space-time turbo equalization have been observed for different transmission scenarios, at the price of an increased, albeit manageable, computational complexity.
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ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2005.860061