Title: A suboptimal iterative method for maximum-likelihood sequence estimation in a multipath context
Authors: Rousseaux, Olivier ×
Leus, Geert
Moonen, Marc #
Issue Date: Dec-2002
Publisher: Hindawi publishing corporation
Series Title: EURASIP Journal on Applied Signal Processing vol:2002 issue:12 pages:1437-1447
Abstract: We present an iterative semiblind suboptimal maximum-likelihood sequence estimation (MLSE) method for single-carrier block transmission over stationary multipath channels. This suboptimal ML detector is based on an iterative least squares with projection (ILSP) algorithm exploiting both the finite alphabet properties of the transmitted signal and its cyclic prefixed structure in order to approach ML detection in a cheap way. Since the initial channel estimate is crucial for the convergence speed of the ILSP algorithm, we propose a new low-complexity stochastic method for providing an initial channel estimate. We therefore rely on some known symbols that are provided by a variant of cyclic prefix only (CP-Only) transmission, known as the known symbol padding only (KSP-Only) technique. The resulting channel model is sufficiently accurate to be used as a starting point for the iterations. The final result is a direct symbol estimation method that is characterised by its low computational complexity and its promising results in terms of bit error rate (BER).
Description: \emph{EURASIP Journal on Applied Signal Processing}, Special Issue on Multiuser Detection and Blind estimation, vol. 2002, no. 12, Dec. 2002
ISSN: 1110-8657
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - STADIUS, Stadius Centre for Dynamical Systems, Signal Processing and Data Analytics
Electrical Engineering - miscellaneous
Faculty of Engineering Science - miscellaneous
× corresponding author
# (joint) last author

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