Linear and nonlinear preequalization/equalization for MIMO systems with long-term channel state information at the transmitter
Simeone, O.
Bar-Ness, Y.
Spagnolini, U.
Center for Commun. & Signal Process. Res., New Jersey Inst. of Technol., Newark, NJ, USA;
This paper appears in: Wireless Communications, IEEE Transactions on
Publication Date: March 2004
Volume: 3,
Issue: 2
On page(s): 373- 378
ISSN: 1536-1276
INSPEC Accession Number: 7918121
Digital Object Identifier: 10.1109/TWC.2003.821139
Current Version Published: 2004-03-08
Abstract
A transceiver structure for frequency-flat multiple-input multiple-output (MIMO) systems that comprises linear/nonlinear preequalization/equalization is optimized according to the minimum mean square error (MMSE) criterion under the assumption that only long-term channel state information (i.e., correlation matrices of fading channel and noise) is available at the transmitter. The structure generalizes different techniques known from the literature, such as BLAST, linear preequalization and equalization, and Tomlinson-Harashima precoding (THP). Simulations show that relevant benefits can be obtained by exploiting the long term channel state information at the transmitter in both dense multipath channels with relatively large correlation at the transmitter side and in sparse multipath channels.
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