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Article Dans Une Revue IEEE Wireless Communications Letters Année : 2018

Distributed CSIT Does Not Reduce the Generalized DoF of the 2-user MISO Broadcast Channel

Résumé

In this letter we analyze the high Signal-to-Noise Ratio (SNR) regime performance of the multi-transmitter MISO Broadcast Channel (BC) with so-called distributed Channel State Information at the Transmitters (CSIT), i.e., where CSIT is made transmitter-dependent. Specifically, we show the unexpected result that it is possible to achieve the same Generalized Degreesof-Freedom (GDoF) independently of whether a channel link estimate is present at one Transmitter (TX), at the other TX, or at both, and regardless of the channel pathloss topology, thanks to a novel transmission scheme. The proposed scheme involves as key ingredient a new precoding scheme coined Sliced Zero-Forcing which efficiently adapts to any distributed CSIT setting.
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Dates et versions

hal-04134309 , version 1 (20-06-2023)

Identifiants

Citer

Antonio Bazco-Nogueras, Paul de Kerret, David Gesbert, Nicolas Gresset. Distributed CSIT Does Not Reduce the Generalized DoF of the 2-user MISO Broadcast Channel. IEEE Wireless Communications Letters, 2018, 8 (3), pp.685-688. ⟨10.1109/LWC.2018.2883455⟩. ⟨hal-04134309⟩

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