Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Performance of Quantized Transceiver in Multiuser Massive MIMO
  Downlinks   Low-resolution digital-to-analog converters (DACs) and analog-to-digital
converters (ADCs) are considered to reduce cost and power consumption in
multiuser massive multiple-input multiple-output (MIMO). Using the Bussgang
theorem, we derive the asymptotic downlink achievable rate w.r.t the
resolutions of both DACs and ADCs, i.e., $b_{DA}$ and $b_{AD}$, under the
assumption of large antenna number, $N$, and fixed user load ratio, $\beta$. We
characterize the rate loss caused by finite-bit-resolution converters and
reveal that the quantization distortion is ignorable at low signal-to-noise
ratio (SNR) even with low-resolution converters at both sides. While for
maintaining the same rate loss at high SNR, it is discovered that one-more-bit
DAC resolution is needed when more users are scheduled with $\beta$ increased
by four times. More specifically for one-bit rate loss requirement, $b_{DA}$
can be set by $\left\lceil b_{AD}+\frac{1}{2}\log\beta \right\rceil$ given
$b_{AD}$. Similar observations on ADCs are also obtained with numerical
verifications.

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The categories of this paper are: atom-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-th
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The categories of this paper are: q-bio
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The categories of this paper are: astro-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ph
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: plasm-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci