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Duality with Linear-Feedback Schemes for the Scalar Gaussian MAC and BC

Abstract : We show that with perfect feedback and when restricting to linear-feedback schemes, the regions achieved over the two-user scalar Gaussian memoryless MAC and over the two-user scalar Gaussian memoryless BC coincide, if the MAC and the BC have equal channel coefficients and if the same (sum-)power constraint P is imposed on their inputs. Since the achievable region for the MAC is well known (it equals Ozarow's perfect-feedback capacity region under a sum-power constraint), we can characterize the region that is achievable over the scalar Gaussian BC with linear-feedback schemes.
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https://hal.archives-ouvertes.fr/hal-01221198
Contributor : Selma Belhadj Amor <>
Submitted on : Tuesday, October 27, 2015 - 3:33:26 PM
Last modification on : Wednesday, June 24, 2020 - 4:19:54 PM
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Selma Belhadj Amor, Yossef Steinberg, Michèle Wigger. Duality with Linear-Feedback Schemes for the Scalar Gaussian MAC and BC. 2014 International Zurich Seminar on Communications (IZS), IEEE Switzerland Chapter on Digital Communications in collaboration with ETH Zurich, Oct 2015, Zürich, Switzerland. pp.25-28, ⟨10.3929/ethz-a-010094576⟩. ⟨hal-01221198⟩

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