Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Double-Sequence Frequency Synchronization for Wideband Millimeter-Wave
  Systems with Few-Bit ADCs   In this paper, we propose and evaluate two novel double-sequence
low-resolution frequency synchronization methods in millimeter-wave (mmWave)
systems. In our system model, the base station uses analog beams to send the
synchronization signal with infinite-resolution digital-to-analog converters.
The user equipment employs a fully digital front end to detect the
synchronization signal with low-resolution analog-to-digital converters (ADCs).
The key ingredient of the proposed methods is the custom designed
synchronization sequence pairs, from which there exists an invertible function
(a ratio metric) of the carrier frequency offset (CFO) to be estimated. We use
numerical examples to show that the ratio metric is robust to the quantization
distortion. Further, we analytically characterize the CFO estimation
performances of our proposed designs assuming a single user. To implement our
proposed methods in a multi-user scenario, we propose to optimize the
double-sequence design parameters such that: (i) for each individual user, the
impact of the quantization distortion on the CFO estimation accuracy is
minimized, and (ii) the resulting frequency range of estimation can capture as
many users' CFOs as possible. Numerical results reveal that our proposed
algorithms provide a flexible means to estimate CFO in a variety of
low-resolution settings.

29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio