Equalization and RAKE detection in wideband ISI channels: Towards rapproachement

P. G. Flikkema; R. Kohno

doi:10.1109/ICC.1999.765462

Equalization and RAKE detection in wideband ISI channels: Towards rapproachement

P. G. Flikkema, R. Kohno

Informatics, Computing, and Cyber Systems, School of

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

The maximum-likelihood (ML) detector for direct-sequence spread-spectrum signaling over ISI channels is developed for both symbol-length and long spreading sequences. The approach is based on a delay-domain orthogonal decomposition of a joint specular/diffuse dispersive multipath channel. The detector, which extends the Ungerboeck symbol-spaced structure, demonstrates the path diversity inherent in spread spectrum ML detection. The RAKE detector is shown to be the ML detector under a set of ideal conditions, one of which cannot be obtained in practice. As an intermediate result, the DS/SS decision-feedback equalizing detector is shown to be a suboptimum approximation of the ML detector.

Original language	English (US)
Title of host publication	1999 IEEE International Conference on Communications, ICC 1999
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1504-1509
Number of pages	6
ISBN (Electronic)	078035284X
DOIs	https://doi.org/10.1109/ICC.1999.765462
State	Published - 1999
Event	1999 IEEE International Conference on Communications, ICC 1999 - Vancouver, Canada Duration: Jun 6 1999 → Jun 10 1999

Publication series

Name	IEEE International Conference on Communications
Volume	3
ISSN (Print)	1550-3607

Other

Other	1999 IEEE International Conference on Communications, ICC 1999
Country/Territory	Canada
City	Vancouver
Period	6/6/99 → 6/10/99

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering

Access to Document

10.1109/ICC.1999.765462

Cite this

Flikkema, P. G., & Kohno, R. (1999). Equalization and RAKE detection in wideband ISI channels: Towards rapproachement. In 1999 IEEE International Conference on Communications, ICC 1999 (pp. 1504-1509). Article 765462 (IEEE International Conference on Communications; Vol. 3). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICC.1999.765462

Equalization and RAKE detection in wideband ISI channels: Towards rapproachement. / Flikkema, P. G.; Kohno, R.
1999 IEEE International Conference on Communications, ICC 1999. Institute of Electrical and Electronics Engineers Inc., 1999. p. 1504-1509 765462 (IEEE International Conference on Communications; Vol. 3).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Flikkema, PG & Kohno, R 1999, Equalization and RAKE detection in wideband ISI channels: Towards rapproachement. in 1999 IEEE International Conference on Communications, ICC 1999., 765462, IEEE International Conference on Communications, vol. 3, Institute of Electrical and Electronics Engineers Inc., pp. 1504-1509, 1999 IEEE International Conference on Communications, ICC 1999, Vancouver, Canada, 6/6/99. https://doi.org/10.1109/ICC.1999.765462

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AB - The maximum-likelihood (ML) detector for direct-sequence spread-spectrum signaling over ISI channels is developed for both symbol-length and long spreading sequences. The approach is based on a delay-domain orthogonal decomposition of a joint specular/diffuse dispersive multipath channel. The detector, which extends the Ungerboeck symbol-spaced structure, demonstrates the path diversity inherent in spread spectrum ML detection. The RAKE detector is shown to be the ML detector under a set of ideal conditions, one of which cannot be obtained in practice. As an intermediate result, the DS/SS decision-feedback equalizing detector is shown to be a suboptimum approximation of the ML detector.

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Y2 - 6 June 1999 through 10 June 1999

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Equalization and RAKE detection in wideband ISI channels: Towards rapproachement

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