LDPC Coded Multiuser Shaping for the Gaussian Multiple Access Channel

Alexios Balatsoukas-Stimming; Stefano Rini; Jörg Kliewer

doi:10.1109/ISIT.2019.8849785

LDPC Coded Multiuser Shaping for the Gaussian Multiple Access Channel

Alexios Balatsoukas-Stimming, Stefano Rini, Jörg Kliewer

Electrical and Computer Engineering

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

2 Scopus citations

Abstract

The joint design of input constellation and low-density parity-check (LDPC) codes to approach the symmetric capacity of the two-user Gaussian multiple access channel is studied. More specifically, multilevel coding is employed at each user to construct a high-order input constellation and the constellations of the users are jointly designed so as to maximize the multiuser shaping gain. At the receiver, each layer of the multilevel coding is jointly decoded among users, while successive cancellation is employed across layers. The LDPC code employed by each user in each layer is designed using EXIT charts to support joint decoding among users for the prescribed per-layer rate and SNR. Numerical simulations are provided to validate the proposed constellation and LDPC code designs.

Original language	English (US)
Title of host publication	2019 IEEE International Symposium on Information Theory, ISIT 2019 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	2609-2613
Number of pages	5
ISBN (Electronic)	9781538692912
DOIs	https://doi.org/10.1109/ISIT.2019.8849785
State	Published - Jul 2019
Event	2019 IEEE International Symposium on Information Theory, ISIT 2019 - Paris, France Duration: Jul 7 2019 → Jul 12 2019

Publication series

Name	IEEE International Symposium on Information Theory - Proceedings
Volume	2019-July
ISSN (Print)	2157-8095

Conference

Conference	2019 IEEE International Symposium on Information Theory, ISIT 2019
Country/Territory	France
City	Paris
Period	7/7/19 → 7/12/19

All Science Journal Classification (ASJC) codes

Theoretical Computer Science
Information Systems
Modeling and Simulation
Applied Mathematics

Keywords

Constellation shaping
Gaussian Multiple Access Channel
Joint decoding
LDPC codes
Multilevel coding

Access to Document

10.1109/ISIT.2019.8849785

Cite this

Balatsoukas-Stimming, A., Rini, S., & Kliewer, J. (2019). LDPC Coded Multiuser Shaping for the Gaussian Multiple Access Channel. In 2019 IEEE International Symposium on Information Theory, ISIT 2019 - Proceedings (pp. 2609-2613). Article 8849785 (IEEE International Symposium on Information Theory - Proceedings; Vol. 2019-July). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISIT.2019.8849785

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title = "LDPC Coded Multiuser Shaping for the Gaussian Multiple Access Channel",

abstract = "The joint design of input constellation and low-density parity-check (LDPC) codes to approach the symmetric capacity of the two-user Gaussian multiple access channel is studied. More specifically, multilevel coding is employed at each user to construct a high-order input constellation and the constellations of the users are jointly designed so as to maximize the multiuser shaping gain. At the receiver, each layer of the multilevel coding is jointly decoded among users, while successive cancellation is employed across layers. The LDPC code employed by each user in each layer is designed using EXIT charts to support joint decoding among users for the prescribed per-layer rate and SNR. Numerical simulations are provided to validate the proposed constellation and LDPC code designs.",

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author = "Alexios Balatsoukas-Stimming and Stefano Rini and J{\"o}rg Kliewer",

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Balatsoukas-Stimming, A, Rini, S & Kliewer, J 2019, LDPC Coded Multiuser Shaping for the Gaussian Multiple Access Channel. in 2019 IEEE International Symposium on Information Theory, ISIT 2019 - Proceedings., 8849785, IEEE International Symposium on Information Theory - Proceedings, vol. 2019-July, Institute of Electrical and Electronics Engineers Inc., pp. 2609-2613, 2019 IEEE International Symposium on Information Theory, ISIT 2019, Paris, France, 7/7/19. https://doi.org/10.1109/ISIT.2019.8849785

LDPC Coded Multiuser Shaping for the Gaussian Multiple Access Channel. / Balatsoukas-Stimming, Alexios; Rini, Stefano; Kliewer, Jörg.
2019 IEEE International Symposium on Information Theory, ISIT 2019 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2019. p. 2609-2613 8849785 (IEEE International Symposium on Information Theory - Proceedings; Vol. 2019-July).

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

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Balatsoukas-Stimming A, Rini S, Kliewer J. LDPC Coded Multiuser Shaping for the Gaussian Multiple Access Channel. In 2019 IEEE International Symposium on Information Theory, ISIT 2019 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2019. p. 2609-2613. 8849785. (IEEE International Symposium on Information Theory - Proceedings). doi: 10.1109/ISIT.2019.8849785

LDPC Coded Multiuser Shaping for the Gaussian Multiple Access Channel

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All Science Journal Classification (ASJC) codes

Keywords

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