MIMO MAP equalization and turbo decoding in interleaved space-time coded systems

Decoding of space-time codes in frequency-selective fading channels is considered. The approach is based on iterative soft-in soft-out equalization and decoding. It is applicable to space-time coded systems that deploy symbol/bit interleavers. We focus on the equalization stage by extending the Unge...

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Bibliographic Details
Published inIEEE transactions on communications Vol. 51; no. 2; pp. 155 - 160
Main Author Tonello, A.M.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.02.2003
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Channels
Computer simulation
Convolutional codes
Decoding
Equalization
Equalizers
Evolution
Fading
Interleaved codes
Intersymbol interference
Iterative decoding
Matched filters
Mathematical analysis
Maximum likelihood decoding
MIMO
Modulation coding
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Summary:Decoding of space-time codes in frequency-selective fading channels is considered. The approach is based on iterative soft-in soft-out equalization and decoding. It is applicable to space-time coded systems that deploy symbol/bit interleavers. We focus on the equalization stage by extending the Ungerboeck equalizer formulation to a multiple-input multiple-output time-variant channel. The resulting structure comprises a bank of matched filters, followed by an a posteriori probabilities calculator that runs the Bahl-Cocke-Jelinek-Raviv/maximum a posteriori algorithm with an appropriate metric. Simulation results are reported for space-time bit-interleaved codes designed over the enhanced data rates for GSM evolution (EDGE) air interface.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2003.809213