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Coset detection in MIMO systems based on spatial multiplexing

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2 Author(s)
Magarini, M. ; Dipt. di Elettronica e Informazione, Politecnico di Milano, Milan, Italy ; Spalvieri, A.

For multiple-input multiple-output (MIMO) spatial multiplexing systems the complexity of the maximum likelihood detector (MLD) can be prohibitively large when the number of transmitting antennas and constellation points is high. To simplify the MLD many linear and nonlinear techniques have been proposed. In this letter the principle of reduced state sequence detection, based on mapping by set partitioning, is applied to perform detection in spatial multiplexing MIMO systems based on non-binary constellations. Simulation results are presented to show the benefits of our proposal. An upper bound to the symbol error probability is also derived.

Published in:

Communications Letters, IEEE  (Volume:10 ,  Issue: 5 )