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A Fractionally Spaced DFE with Subband Decorrelation

A Fractionally Spaced DFE with Subband Decorrelation
A Fractionally Spaced DFE with Subband Decorrelation
In this paper we proposed a modification of the "classic" fractionally spaced decision feedback equaliser (FS-DFE) in order to increase the slow convergence rate of the oversampled feed-forward section for LMS type algorithms. This is performed by employing a subband structure for the latter part of the FS-DFE, which results in a decorrelation of the input. We motivate why an oversampled subband decomposition is beneficial and comment on the selection of the filter banks. As an additional benefit, computational savings arise if judicious implementation of the filter banks is combined with the internal decimation and expansion operations in the FS-DFE. Simulations for a sever multipath environment are presented.
0-7803-6514-3
1767-1771
Weiss, S.
55a13123-6604-4dad-b647-7347683c8c49
Rupp, M.
66e04939-773b-4528-a516-11e4c5007bd6
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Weiss, S.
55a13123-6604-4dad-b647-7347683c8c49
Rupp, M.
66e04939-773b-4528-a516-11e4c5007bd6
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Weiss, S., Rupp, M. and Hanzo, L. (2000) A Fractionally Spaced DFE with Subband Decorrelation At 34th Asilomar Conference on Signals, Systems, and Computers, United States. 29 Oct - 01 Nov 2000. , pp. 1767-1771.

Record type: Conference or Workshop Item (Paper)

Abstract

In this paper we proposed a modification of the "classic" fractionally spaced decision feedback equaliser (FS-DFE) in order to increase the slow convergence rate of the oversampled feed-forward section for LMS type algorithms. This is performed by employing a subband structure for the latter part of the FS-DFE, which results in a decorrelation of the input. We motivate why an oversampled subband decomposition is beneficial and comment on the selection of the filter banks. As an additional benefit, computational savings arise if judicious implementation of the filter banks is combined with the internal decimation and expansion operations in the FS-DFE. Simulations for a sever multipath environment are presented.

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More information

Published date: October 2000
Additional Information: Event Dates: 29 October - 1 November 2000 Organisation: IEEE Address: Monterey, California, USA
Venue - Dates: 34th Asilomar Conference on Signals, Systems, and Computers, United States, 2000-10-29 - 2000-11-01
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 253999
URI: http://eprints.soton.ac.uk/id/eprint/253999
ISBN: 0-7803-6514-3
PURE UUID: facf7c2a-5f64-4f96-9a35-265d17a8d101
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 28 Jan 2004
Last modified: 18 Jul 2017 09:55

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Contributors

Author: S. Weiss
Author: M. Rupp
Author: L. Hanzo ORCID iD

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