Variable-length coding for short packets over a multiple access channel with feedback

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Abstract

We consider a two-user discrete memoryless multiple access channel with a common stop-feedback signal from the receiver to both transmitters. The achievable regions are characterized using joint decoding and successive cancellation decoding and, it is shown that the achievable regions are significantly larger for variable-length stop-feedback codes compared to fixed-blocklength codes. This is analogous to the result by Polyanskiy et al. (2011) for the point-to-point channel. An important conclusion is the following. In the asymptotic case the capacity region can be achieved by joint decoding, but also by successive cancellation decoding and time-sharing. For the case of finite blocklength, joint decoding performs significantly better than successive cancellation decoding, even when aiming for the corners of the achievable regions.
Original languageEnglish
Book seriesInternational Symposium on Wireless Communication Systems (ISWCS)
Pages (from-to)796-800
Number of pages5
ISSN2154-0217
DOIs
Publication statusPublished - 29 Aug 2014
Event2014 11th International Symposium on Wireless Communications Systems - Barcelona, Spain
Duration: 26 Aug 201429 Aug 2014
Conference number: 33154

Conference

Conference2014 11th International Symposium on Wireless Communications Systems
Number33154
CountrySpain
CityBarcelona
Period26/08/201429/08/2014

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Cite this

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title = "Variable-length coding for short packets over a multiple access channel with feedback",
abstract = "We consider a two-user discrete memoryless multiple access channel with a common stop-feedback signal from the receiver to both transmitters. The achievable regions are characterized using joint decoding and successive cancellation decoding and, it is shown that the achievable regions are significantly larger for variable-length stop-feedback codes compared to fixed-blocklength codes. This is analogous to the result by Polyanskiy et al. (2011) for the point-to-point channel. An important conclusion is the following. In the asymptotic case the capacity region can be achieved by joint decoding, but also by successive cancellation decoding and time-sharing. For the case of finite blocklength, joint decoding performs significantly better than successive cancellation decoding, even when aiming for the corners of the achievable regions.",
author = "Trillingsgaard, {Kasper Fl{\o}e} and Petar Popovski",
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Variable-length coding for short packets over a multiple access channel with feedback. / Trillingsgaard, Kasper Fløe; Popovski, Petar.

In: International Symposium on Wireless Communication Systems (ISWCS), 29.08.2014, p. 796-800.

Research output: Contribution to journalConference article in JournalResearchpeer-review

TY - GEN

T1 - Variable-length coding for short packets over a multiple access channel with feedback

AU - Trillingsgaard, Kasper Fløe

AU - Popovski, Petar

PY - 2014/8/29

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N2 - We consider a two-user discrete memoryless multiple access channel with a common stop-feedback signal from the receiver to both transmitters. The achievable regions are characterized using joint decoding and successive cancellation decoding and, it is shown that the achievable regions are significantly larger for variable-length stop-feedback codes compared to fixed-blocklength codes. This is analogous to the result by Polyanskiy et al. (2011) for the point-to-point channel. An important conclusion is the following. In the asymptotic case the capacity region can be achieved by joint decoding, but also by successive cancellation decoding and time-sharing. For the case of finite blocklength, joint decoding performs significantly better than successive cancellation decoding, even when aiming for the corners of the achievable regions.

AB - We consider a two-user discrete memoryless multiple access channel with a common stop-feedback signal from the receiver to both transmitters. The achievable regions are characterized using joint decoding and successive cancellation decoding and, it is shown that the achievable regions are significantly larger for variable-length stop-feedback codes compared to fixed-blocklength codes. This is analogous to the result by Polyanskiy et al. (2011) for the point-to-point channel. An important conclusion is the following. In the asymptotic case the capacity region can be achieved by joint decoding, but also by successive cancellation decoding and time-sharing. For the case of finite blocklength, joint decoding performs significantly better than successive cancellation decoding, even when aiming for the corners of the achievable regions.

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DO - 10.1109/ISWCS.2014.6933462

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