A structured channel estimator for maximum likelihood sequencedetection in multipath fading channels
Boon Chong Ng
Cedervall, M.
Paulraj, A.
DSO Nat. Labs.;
This paper appears in: Vehicular Technology, IEEE Transactions on
Publication Date: Jul 1999
Volume: 48,
Issue: 4
On page(s): 1216-1228
ISSN: 0018-9545
References Cited: 19
CODEN: ITVTAB
INSPEC Accession Number: 6316829
Digital Object Identifier: 10.1109/25.775370
Current Version Published: 2002-08-06
Abstract
This paper describes a channel estimator using known prior
information about the transmit and receive filters, it is shown that the
composite channel lies in a certain subspace obtained from the impulse
responses of these filters. A structured linear channel model is then
developed that is linearly parameterized by an unknown vector. To
illustrate the potential usefulness of such an approach, the estimated
structured channel is used in a multisensor and oversampled maximum
likelihood sequence estimation (MLSE) receiver. We also present
expressions on the pairwise error probability for the MLSE receiver
based on the structured channel model. Using these results, we
investigate the phenomenon of error flooring
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