Constellation shaping for IEEE 802.11

Y.C. Gultekin; W.J. van Houtum; S. Serbetli; F.M.J. Willems

doi:10.1109/PIMRC.2017.8292338

Constellation shaping for IEEE 802.11

Y.C. Gultekin, W.J. van Houtum, S. Serbetli, F.M.J. Willems

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

25 Citations (Scopus)

295 Downloads (Pure)

Abstract

A constellation shaping scheme is proposed. The motivation is to decrease the required transmit power for a specified spectral efficiency. Instead of imposing a non-uniform distribution on the constellation or using nonuniformly spaced symbols, a sphere constraint is employed on the n-dimensional signal space. An efficient algorithm called enumerative amplitude shaping is given to find and index all signal points in the sphere. A comparison with a prominent probabilistic shaping algorithm is provided. The enumerative approach achieves the target rate more efficiently for small block lengths. To introduce error correction, the convolutional encoder used in IEEE Std 802.11 is combined with the shaper in a novel way. Instead of utilizing a larger constellation in combination with shaping, a higher code rate is used by puncturing. Gains up to 1.61 dB are observed for the rates 3 to 6 bits/2-D with 64- and 256-QAM schemes in AWGN channels. The contribution of puncturing in these gains is discussed.

Original language	English
Title of host publication	Proceedings of the 28th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC 2017)
Subtitle of host publication	Engaged Citizens and their New Smart Worlds, PIMRC 2017 - Conference Proceedings
Place of Publication	Piscataway
Publisher	Institute of Electrical and Electronics Engineers
Number of pages	7
ISBN (Electronic)	978-1-5386-3531-5
ISBN (Print)	978-1-5386-3529-2
DOIs	https://doi.org/10.1109/PIMRC.2017.8292338
Publication status	Published - 14 Feb 2018
Event	28th IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2017 - Hotel Bonaventure, Montreal, Canada Duration: 8 Oct 2017 → 13 Oct 2017 Conference number: 28 http://pimrc2017.ieee-pimrc.org/

Conference

Conference	28th IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2017
Abbreviated title	PIMRC 2017
Country/Territory	Canada
City	Montreal
Period	8/10/17 → 13/10/17
Internet address	http://pimrc2017.ieee-pimrc.org/

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10.1109/PIMRC.2017.8292338

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http://www.mendeley.com/research/constellation-shaping-ieee-80211

Cite this

Gultekin, Y. C., van Houtum, W. J., Serbetli, S., & Willems, F. M. J. (2018). Constellation shaping for IEEE 802.11. In Proceedings of the 28th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC 2017): Engaged Citizens and their New Smart Worlds, PIMRC 2017 - Conference Proceedings Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/PIMRC.2017.8292338

Gultekin, Y.C. ; van Houtum, W.J. ; Serbetli, S. et al. / Constellation shaping for IEEE 802.11. Proceedings of the 28th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC 2017): Engaged Citizens and their New Smart Worlds, PIMRC 2017 - Conference Proceedings. Piscataway : Institute of Electrical and Electronics Engineers, 2018.

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abstract = "A constellation shaping scheme is proposed. The motivation is to decrease the required transmit power for a specified spectral efficiency. Instead of imposing a non-uniform distribution on the constellation or using nonuniformly spaced symbols, a sphere constraint is employed on the n-dimensional signal space. An efficient algorithm called enumerative amplitude shaping is given to find and index all signal points in the sphere. A comparison with a prominent probabilistic shaping algorithm is provided. The enumerative approach achieves the target rate more efficiently for small block lengths. To introduce error correction, the convolutional encoder used in IEEE Std 802.11 is combined with the shaper in a novel way. Instead of utilizing a larger constellation in combination with shaping, a higher code rate is used by puncturing. Gains up to 1.61 dB are observed for the rates 3 to 6 bits/2-D with 64- and 256-QAM schemes in AWGN channels. The contribution of puncturing in these gains is discussed.",

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Gultekin, YC , van Houtum, WJ, Serbetli, S & Willems, FMJ 2018, Constellation shaping for IEEE 802.11. in Proceedings of the 28th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC 2017): Engaged Citizens and their New Smart Worlds, PIMRC 2017 - Conference Proceedings. Institute of Electrical and Electronics Engineers, Piscataway, 28th IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2017, Montreal, Canada, 8/10/17. https://doi.org/10.1109/PIMRC.2017.8292338

Constellation shaping for IEEE 802.11. / Gultekin, Y.C.; van Houtum, W.J.; Serbetli, S. et al.
Proceedings of the 28th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC 2017): Engaged Citizens and their New Smart Worlds, PIMRC 2017 - Conference Proceedings. Piscataway: Institute of Electrical and Electronics Engineers, 2018.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Gultekin YC , van Houtum WJ, Serbetli S, Willems FMJ. Constellation shaping for IEEE 802.11. In Proceedings of the 28th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC 2017): Engaged Citizens and their New Smart Worlds, PIMRC 2017 - Conference Proceedings. Piscataway: Institute of Electrical and Electronics Engineers. 2018 doi: 10.1109/PIMRC.2017.8292338

Constellation shaping for IEEE 802.11

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Enumerative sphere shaping for wireless communications with short packets

Partial enumerative sphere shaping

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