Sum-Rate Capacity for Symmetric Gaussian Multiple Access Channels with Feedback
Information Theory
2018-11-26 v1 math.IT
Abstract
The feedback sum-rate capacity is established for the symmetric -user Gaussian multiple-access channel (GMAC). The main contribution is a converse bound that combines the dependence-balance argument of Hekstra and Willems (1989) with a variant of the factorization of a convex envelope of Geng and Nair (2014). The converse bound matches the achievable sum-rate of the Fourier-Modulated Estimate Correction strategy of Kramer (2002).
Keywords
Cite
@article{arxiv.1811.09525,
title = {Sum-Rate Capacity for Symmetric Gaussian Multiple Access Channels with Feedback},
author = {Erixhen Sula and Michael Gastpar and Gerhard Kramer},
journal= {arXiv preprint arXiv:1811.09525},
year = {2018}
}
Comments
16 pages, 2 figures, published in International Symposium on Information Theory (ISIT) 2018