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The Optimal DoF Region for the Two-User Non-Coherent SIMO Multiple-Access Channel

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Abstract

The optimal degree-of-freedom (DoF) region of the non-coherent multiple-access channels is still unknown in general. In this paper, we make some progress by deriving the entire optimal DoF region in the case of the two-user single-input multiple-output (SIMO) generic block fading channels. The achievability is based on a simple training-based scheme. The novelty of our result lies in the converse using a genie-aided bound and the duality upper bound. As a by-product, our result generalizes previous proofs for the single-user Rayleigh block fading channels.
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Dates and versions

hal-03420092 , version 1 (08-11-2021)

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Khac-Hoang Ngo, Sheng Yang, Maxime Guillaud. The Optimal DoF Region for the Two-User Non-Coherent SIMO Multiple-Access Channel. 2018 IEEE Information Theory Workshop (ITW), Nov 2018, Guangzhou, China. pp.1-5, ⟨10.1109/ITW.2018.8613325⟩. ⟨hal-03420092⟩
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