Iterative multiuser detection of a multiple access FSK system

Dieter M. Arnold; Christian Schlegel; Lance C. Perez

doi:10.1109/ISIT.1997.613245

Iterative multiuser detection of a multiple access FSK system

Dieter M. Arnold, Christian Schlegel, Lance C. Perez

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

2 Scopus citations

Abstract

The performance of a collision frequency shift keying system (CFSK) multiple access system is investigated. In CFSK two or more users can simultaneously transmit the same frequency resulting in a collision. A new iterative consensus decoder, the maximum a posteriori consensus decoder, is formulated and the performance investigated in the presence of noise. In this decoder, each user uses a maximum a posteriori decoding algorithm to calculate the probability that they transmitted each of the frequencies. The resulting probability distributions are then shared among the users and refined by iteration. This decoder is based on the derivation of a metric for the noisy CFSK channel. Simulation results demonstrate the efficacy of the new decoder.

Original language	English (US)
Title of host publication	Proceedings - 1997 IEEE International Symposium on Information Theory, ISIT 1997
Pages	319
Number of pages	1
DOIs	https://doi.org/10.1109/ISIT.1997.613245
State	Published - 1997
Event	1997 IEEE International Symposium on Information Theory, ISIT 1997 - Ulm, Germany Duration: Jun 29 1997 → Jul 4 1997

Publication series

Name	IEEE International Symposium on Information Theory - Proceedings
ISSN (Print)	2157-8095

Conference

Conference	1997 IEEE International Symposium on Information Theory, ISIT 1997
Country/Territory	Germany
City	Ulm
Period	6/29/97 → 7/4/97

ASJC Scopus subject areas

Theoretical Computer Science
Information Systems
Modeling and Simulation
Applied Mathematics

Access to Document

10.1109/ISIT.1997.613245

Cite this

Iterative multiuser detection of a multiple access FSK system. / Arnold, Dieter M.; Schlegel, Christian; Perez, Lance C.
Proceedings - 1997 IEEE International Symposium on Information Theory, ISIT 1997. 1997. p. 319 613245 (IEEE International Symposium on Information Theory - Proceedings).

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

Arnold, DM, Schlegel, C & Perez, LC 1997, Iterative multiuser detection of a multiple access FSK system. in Proceedings - 1997 IEEE International Symposium on Information Theory, ISIT 1997., 613245, IEEE International Symposium on Information Theory - Proceedings, pp. 319, 1997 IEEE International Symposium on Information Theory, ISIT 1997, Ulm, Germany, 6/29/97. https://doi.org/10.1109/ISIT.1997.613245

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AB - The performance of a collision frequency shift keying system (CFSK) multiple access system is investigated. In CFSK two or more users can simultaneously transmit the same frequency resulting in a collision. A new iterative consensus decoder, the maximum a posteriori consensus decoder, is formulated and the performance investigated in the presence of noise. In this decoder, each user uses a maximum a posteriori decoding algorithm to calculate the probability that they transmitted each of the frequencies. The resulting probability distributions are then shared among the users and refined by iteration. This decoder is based on the derivation of a metric for the noisy CFSK channel. Simulation results demonstrate the efficacy of the new decoder.

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Iterative multiuser detection of a multiple access FSK system

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