Decision-Directed Channel Estimation for Multi-User OFDM Environments
Decision-Directed Channel Estimation for Multi-User OFDM Environments
Multiple reception antenna assisted Space Division Multiple Access (SDMA) techniques designed for wireless OFDM systems have recently drawn wide interests. These techniques facilitate the implementation of effective multi-user detection algorithms at the receiver, such as Minimum Mean-Square Error (MMSE) detection, Successive Interference Cancellation (SIC), Parallel Interference Cancellation (PIC) or Maximum Likelihood (ML) detection. A pre-requisite of their operation is the availability of an estimate of the channel's frequency domain transfer function. Decision-directed channel estimation was analysed by Li et al. in the context of a space-time coded single-user arrangement employing two transmit and two receive antennas. This estimation scheme is also applicable to a multi-user scenario, where each user is equipped with a single transmit antenna. The contribution presented here proposes an enhanced decision-directed channel estimator, which removes the Mean-Square Channel Estimation Error (MSE) floor of Li's estimator.
2417-2420
Münster, M.
c7bbba92-827f-4a77-bdc2-fbed67caab36
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
2001
Münster, M.
c7bbba92-827f-4a77-bdc2-fbed67caab36
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Münster, M. and Hanzo, L.
(2001)
Decision-Directed Channel Estimation for Multi-User OFDM Environments.
VTC'2001 (Spring), , Rhodes, Greece.
06 - 09 May 2001.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Multiple reception antenna assisted Space Division Multiple Access (SDMA) techniques designed for wireless OFDM systems have recently drawn wide interests. These techniques facilitate the implementation of effective multi-user detection algorithms at the receiver, such as Minimum Mean-Square Error (MMSE) detection, Successive Interference Cancellation (SIC), Parallel Interference Cancellation (PIC) or Maximum Likelihood (ML) detection. A pre-requisite of their operation is the availability of an estimate of the channel's frequency domain transfer function. Decision-directed channel estimation was analysed by Li et al. in the context of a space-time coded single-user arrangement employing two transmit and two receive antennas. This estimation scheme is also applicable to a multi-user scenario, where each user is equipped with a single transmit antenna. The contribution presented here proposes an enhanced decision-directed channel estimator, which removes the Mean-Square Channel Estimation Error (MSE) floor of Li's estimator.
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mm-lh-May01-VTCspring01.pdf
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Published date: 2001
Additional Information:
Event Dates: 6-9 May 2001
Venue - Dates:
VTC'2001 (Spring), , Rhodes, Greece, 2001-05-06 - 2001-05-09
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 257140
URI: http://eprints.soton.ac.uk/id/eprint/257140
PURE UUID: 246d5544-3702-4673-875c-9e27af8e876a
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Date deposited: 06 Jan 2004
Last modified: 18 Mar 2024 02:33
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Contributors
Author:
M. Münster
Author:
L. Hanzo
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