Sum-Rate Capacity for Symmetric Gaussian Multiple Access Channels with Feedback
The feedback sum-rate capacity is established for the symmetric three-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 “doubling trick” of Geng and Nair (2014). The converse bound matches the achievable sum-rate of the Fourier-Modulated Estimate Correction strategy of Kramer (2002). The proof arguments extend to GMACs with more than three users.
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Sula, E., Gastpar, M., & Kramer, G. (2018). Sum-Rate Capacity for Symmetric Gaussian Multiple Access Channels with Feedback. Proceedings of the 2018 IEEE International Symposium on Information Theory (ISIT), 306–310. https://doi.org/10.1109/ISIT.2018.8437691
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2018
306
310
REVIEWED
EPFL
| Event name | Event place | Event date |
Vail, CO, USA | June 17-22, 2018 | |