Capacity-approaching signals for the scalar Gaussian channel

Hugo Méric (1) , Jérôme Lacan (2)

1 NIC Research Labs [Chile]
2 DISC - Département d'Ingénierie des Systèmes Complexes

We consider the scalar Gaussian channel with power constraint P. A gap exists between the channel capacity and the highest achievable rate of equiprobable uniformly spaced signal. Several approaches enable to overcome this limitation such as constellations with non-uniform probability or constellation shaping. In this short paper, we focus on constellation shaping. We present a method to construct one-dimensional constellations with equiprobable signaling that achieve the Gaussian capacity as the number of signal points goes to infinity.

Mots clés: Modulation; Constellation; Hannel capacity

Domaines: Autre

Hugo Méric, Jérôme Lacan. Capacity-approaching signals for the scalar Gaussian channel. Wireless Telecommunications Symposium 2016, Apr 2016, London, United Kingdom. pp. 1-3. ⟨hal-01434827⟩