Sum-Rate Capacity for Symmetric Gaussian Multiple Access Channels With Feedback
The feedback sum-rate capacity is established for the symmetric $J$ -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).
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Sula, E., Gastpar, M., & Kramer, G. (2020). Sum-Rate Capacity for Symmetric Gaussian Multiple Access Channels With Feedback. Ieee Transactions on Information Theory, 66(5), 2860–2871. https://doi.org/10.1109/TIT.2019.2957808
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WOS:000530268900019
2020-05-01
66
5
2860
2871
REVIEWED
EPFL