Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Combining Channel Output Feedback and CSI Feedback for MIMO Wireless
  Systems   The use of channel output feedback to improve the reliability of fading
channels has received scant attention in the literature. In most work on
feedback for fading channels, only channel state information (CSI) feedback has
been exploited for coding at the transmitter. In this work, the design of a
coding scheme for multiple-input multiple-output (MIMO) fading systems with
channel output and channel state feedback at the transmitter is considered.
Under the assumption of additive white Gaussian noise and an independent and
identically distributed fading process, a simple linear coding strategy that
achieves any rate up to capacity is proposed. The framework assumes perfect CSI
at the transmitter and receiver. This simple linear processing scheme can
provide a doubly exponential probability of error decay with blocklength for
all rates less than capacity. Remarkably, this encoding scheme actually
consists of two separate encoding blocks: one that adapts to the current CSI
and one that adapts to the previous channel output feedback. This scheme is
extended to the case when the CSI is quantized at the receiver and conveyed to
the transmitter over a limited rate feedback channel; for multiple-input
single-output (MISO) fading systems it is shown the doubly exponential
probability of error decay is achieved as the blocklength increases.

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The categories of this paper are: astro-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
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The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
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The categories of this paper are: cond-mat
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The categories of this paper are: q-bio
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The categories of this paper are: physics
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The categories of this paper are: chao-dyn
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The categories of this paper are: econ
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The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: solv-int
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th