On constellation shaping for short block lengths

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

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Gaussian channel inputs are required to achieve the capacity of additive white Gaussian noise (AWGN) channels. Equivalently, the n-dimensional constellation boundary must be an n-sphere. In this work, constellation shaping is discussed for short block lengths. Two different approaches are considered: Sphere shaping and constant composition distribution matching (CCDM). It is shown that both achieve the maximum rate and generate Maxwell-Boltzmann (MB) distributed inputs. However sphere shaping achieves this maximum faster than CCDM and performs more efficiently in the short block length regime. This is shown by computing the finite-length rate losses. Then the analysis is justified by numerical simulations employing low-density parity-check (LDPC) codes of the IEEE 802.11 standard.
Originele taal-2Engels
TitelProceedings of the 2018 Symposium on Information Theory and Signal Processing in the Benelux
RedacteurenLuuk Spreeuwers, Jasper Goseling
Plaats van productieEnschede
UitgeverijTwente University
Pagina's86-96
ISBN van elektronische versie978-90-365-4570-9
StatusGepubliceerd - jun 2018
Evenement2018 Symposium on Information Theory and Signal Processing in the Benelux (SITB 2018) - University of Twente, Enschede, Nederland
Duur: 31 mei 20181 jun 2018
https://www.utwente.nl/en/eemcs/sitb2018/

Congres

Congres2018 Symposium on Information Theory and Signal Processing in the Benelux (SITB 2018)
Verkorte titelSITB 2018
LandNederland
StadEnschede
Periode31/05/181/06/18
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  • Citeer dit

    Gultekin, Y. C., van Houtum, W. J., & Willems, F. M. J. (2018). On constellation shaping for short block lengths. In L. Spreeuwers, & J. Goseling (editors), Proceedings of the 2018 Symposium on Information Theory and Signal Processing in the Benelux (blz. 86-96). Enschede: Twente University.