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Decoding space-time codes with BLAST architectures

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3 Author(s)
E. Biglieri ; Politecnico di Torino, Italy ; G. Taricco ; A. Tulino

We describe how space-time codes can be decoded using a vertical BLAST architecture in a multiple-antenna transmission system. We first provide a general formulation of zero-forcing (ZF) and minimum mean-square error (MMSE) BLAST architectures. Next, we describe how these can be used to decode space-time trellis codes: the idea is to soft-decode sequentially segments of the trellis, and use the decoding results to remove spatial interference from subsequent segments. After the whole interference has been removed, the whole trellis is decoded.

Published in:

Information Theory, 2002. Proceedings. 2002 IEEE International Symposium on

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