Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimal DoF region of the K-User MISO BC with Partial CSIT   We consider the $K$-User Multiple-Input-Single-Output (MISO) Broadcast
Channel (BC) where the transmitter, equipped with $M$ antennas, serves $K$
users, with $K \leq M$. The transmitter has access to a partial channel state
information of the users. This is modelled by letting the variance of the
Channel State Information at the Transmitter (CSIT) error of user $i$ scale as
$O(P^{-\alpha_i}$) for the Signal-to-Noise Ratio (SNR) $P$ and some constant
$\alpha_i \geq 0$. In this work we derive the optimal Degrees-of-Freedom (DoF)
region in such setting and we show that Rate-Splitting (RS) is the key scheme
to achieve such a region.

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The categories of this paper are: q-bio
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The categories of this paper are: nlin
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: q-alg
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The categories of this paper are: quant-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: econ
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The categories of this paper are: eess
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The categories of this paper are: cond-mat
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The categories of this paper are: supr-con
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ph
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The categories of this paper are: q-fin