On optimal constellations for BICM at low SNR
Paper i proceeding, 2009

In this paper we study the problem of finding capacity-maximizing constellations in BICM for asymptotically low signal-to-noise ratios (SNRs). We base our analysis on the so-called Hadamard transform and on a linear approximation of the BICM capacity for asymptotically low SNRs. We fully characterize the set of constellations, input distributions, and binary labelings that achieve Shannon's limit E_b/N_0=-1.59 dB. For equiprobable input distributions, a constellation achieves this limit if and only if it is a linear projection of a hypercube.

Författare

Erik Agrell

Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Alex Alvarado

Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Proceedings IEEE Information Theory Workshop ITW 2009, Taormina, Italy [Best Poster Award]

480-484 5351404

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Telekommunikation

DOI

10.1109/ITW.2009.5351404

ISBN

9781424449835